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  • Offer Profile
  • We are developer, manufacturer and supplier of measurement systems for the water industry. Since more than 45 years NIVUS is active in the field of flow and level metering and is one of the worldwide leading companies in this area. It is our claim to provide the best flow meters with the highest accuracy required for our customers' applications. A selection of various flow measurement technologies combined with individual advice based on comprehensive expertise enables us to provide our customers the optimum systems for the specific measurement site.
Product Portfolio

  • Flow Measurement for Liquids

  • We provide reliable flow measurement devices for clean, slight and heavily polluted media as well as a very wide variety of sensors. Our hydraulic flow measurement systems as well as our radar and ultrasound-based flow measurement systems are supplemented by hydrostatic or ultrasonic level measurements.

      • Clean and Slightly Polluted Media

          • NivuFlow 650 Flow Meter

          • For pipes, open channels and water bodies
            Allows high accurate flow measurements using the transit time method according to IEC 60041 for part filled and full pipes, open channels and water bodies. Up to 8 measurement paths.

            • Ultrasonic transit time measurement
            • Single or multi path measurement (up to 32 measurement paths with extension modules - in preparation)
            • Quick and easy initial start-up due to intuitive, modern operating concept
            • The wide range of NIVUS transducers ensures suitability for each measurement application
            • Online connection/data transmission and remote maintenance via Internet
            • Uncomplicated integration into existing control systems via universal interfaces
            • 不受天气影响的户外使用可用的版本
            • Compliant with ISO 6416 & IEC 60041

            General description
            650年NivuFlow符合ISO 6416 &IEC 60041 and has been developed for accurate flow measurement in open channels, part full and full pipes, and surface water bodies. To meet the highest possible accuracy requirements it is currently possible to utilise the NivuFlow 650 using up to 4 velocity paths, with up to 32 velocity paths available by beginning of 2017. The NivuFlow 650 operates over the full bi-directional flow range without causing obstruction or head loss where the large array of NIVUS transducer models makes flow measurement possible across the widest possible range of applications

            The compact transmitter design is easily integrated into instrument cabinets using a DIN rail mounting system and is also available with a field enclosure that provides full protection under harsh environmental operating conditions.
            The transmitter‘s large graphic display allows quick and easy commissioning of the flow metering system.

            Typical NivuFlow 650 Applications
            • Fixed measurement of surface waters such as rivers, channels and similar
            • Irrigation systems (volume distribution and billing)
            • Hydropower plants (turbine efficiency and turbine optimisation etc.)
            • Inlets and outlets conducting cooling water or circulation systems
            • Industrial process waters
            • and many more

          • NivuFlow 600 Flow Meter

          • flow measurement for full pipes
            Allows high accurate flow measurement using the transit time method in full pipes. Up to 4 measurement paths.

            • Ultrasonic transit time measurement
            • Single or multi path measurement (up to 32 measurement paths with extension modules - in preparation)
            • Flow meter for insert or non-contact clamp-on-sensors
            • Easy installation without process disruption
            • 容易由于菜单引导传感器positionin启动g
            • High accurate flow measurement in clean and slightly polluted media
            • Intuitive, modern operating concept
            • High-resolution graphic daylight display
            • Extensive diagnostic functions for reliable initial start-up and quick maintenance

            General description
            The NivuFlow 600 system was developed particularly for flow measurement in full pipes. To meet the highest accuracy requirements it is possible to equip the transmitters with up to 4 measurement paths, with up to 32 velocity paths available by beginning of 2017. There are pipe sensors as well as contactless clamp-on sensors available for the measurement system. It is not necessary to interrupt running processes to install both sensor types. The system is suitable for the detection of flow rates in various liquid media covering a wide range of applications.

            Typical applications
            • Hydropower
            • Leakage monitoring
            • Irrigation systems (volume distribution and billing)
            • Inlets and outlets conducting cooling water or circulation systems
            • Industry: process water, slightly polluted water and more
            • Comparative measurements
            • Pump monitoring and verification

          • NivuChannel Flow Meter

          • For pipes, open channels and water bodies
            Allows high accurate flow measurements using the transit time method according to IEC 60041 for part filled and full pipes, open channels and water bodies. Up to 8 measurement paths.

            • Ultrasonic transit time measurement with up to 8 measurement paths
            • Flow meter for clear to slightly polluted water
            • 8-path measurement according to IEC 60041 (ASME PTC 18)
            • Flow meter for pipes, open channels and surface waters
            • Easy, multilingual setting of parameters in dialog mode
            • Large, back-lit graphic display
            • Storage of all measurement data on Compact Flash Card
            • Worldwide communication
            • Online connection / data transmission and remote maintenance via Internet
            • Distance between sensors and transmitters up to 300 meter

            General description
            NivuChannel is a fix installation flow meter for continuous flow measurement and storage of recorded measurement values and can be used in clean to slightly polluted media.
            The flow measurement system is designed for use in part filled and full flumes, channels and pipes featuring various shapes and dimensions.

            The NivuChannel measures the average flow velocity within the medium using ultrasound based on the transit time method. This standardised method provides a wide range of applications featuring high accurate results.

            Typical NivuChannel applications
            • Fixed measurement of surface waters such as rivers, channels and similar
            • Irrigation systems (volume distribution and billing)
            • Hydropower plants (turbine efficiency and turbine optimisation etc.)
            • Inlets and outlets conducting cooling water or circulation systems
            • WWTPs: outlet, distribution of dirty water and many more
            • Leakage investigation in river dam areas
            • Industrial flow measurements
            • and many more

          • NOS Hemispheric and Ballhead Sensor

          • For measurement places with various geometries
            For connection to NivuFlow 650 transmitters. High accurate flow measurement based on the transit time method for open channels and waters, mainly process water channels and natural water bodies.

            • Ultrasonic transit time sensor for connection to NivuFlow 650
            • Hydrometry with highest measurement accuracy
            • Measurement in clear to slightly polluted water
            • For 8-path measurements according to IEC 60041 (ASME PTC 18)
            • Measurement in open channels and surface water bodies
            • Resistant sensor material for use in various media
            • Up to 100 m of cable length between sensor and transmitter or adapter box
            • NOS hemispheric and ballhead sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media in part filled and full flumes as well as channels featuring various geometries and dimensions.

            Typical NOS hemispheric and ballhead sensor applications
            • Fixed measurement of surface water bodies such as rivers, channels and similar
            • Irrigation systems
            • Inlets and outlets conducting cooling water or circulation systems
            • WWTP outlets
            • Investigation of infiltration/extraneous water or leakage
            • Industrial flow measurements
            • and many more

          • NOS Rod Sensor

          • For measurement places with rectangular geometries
            For connection to NivuFlow 650 transmitters. High accurate flow measurement based on the transit time method for open channels and waters, mainly process water channels and natural water bodies.

            • Ultrasonic transit time sensor for connection to NivuFlow 650
            • Hydrometry with highest measurement accuracy
            • WRAS approval for some versions
            • Measurement in clear to slightly polluted water
            • For 8-path measurements according to IEC 60041 (ASME PTC 18)
            • Measurement in open channels and surface water bodies
            • Resistant sensor material for use in various media
            • Up to 100 m of cable length between sensor and transmitter or adapter box
            • NOS rod sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media. Due to their mechanic construction the sensors are particularly suitable for use in part filled flumes with vertical walls.

            The sensor holders are designed to install the sensors above the water level. The water level hence does not need to be lowered and moreover divers are not needed.

            Typical NOS rod sensor applications
            • Fixed flow measurements in channels with various dimensions and similar
            • Irrigation systems
            • Potable water systems
            • Inlets and outlets conducting cooling water or circulation
            • WWTP outlets, distribution of dirty water and similar
            • Industrial flow measurements, process water
            • and many more

          • NOS Screw-in sensor

          • for pressurised pipelines
            For high accurate flow measurement using the transit time method according to IEC 60041 process water and high pressure lines.

            • Ultrasonic transit time sensor for connection to NivuFlow 650
            • High accurate monitoring of hydropower plants
            • Resistant sensor material for use in various media
            • Measurement in clear to slightly polluted water
            • Hydropower plant monitoring with highest measurement accuracy
            • For 8-path measurements according to IEC 60041 (ASME PTC 18
            • Up to 100 m of cable length between sensor and transmitter or adapter box
            • NOS screw-in sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media.
            • NOS screw-in sensors are used for flow measurement in full pipes featuring various dimensions.

            Readings are detected based on the ultrasonic transit time principle. Creating a standardised measurement network by installing up to 8 measurement paths according to IEC 60041 allows high accurate measurement results.

            Typical NOS screw-in sensor applications
            • Fixed measurements in full pipes in hydropower plants, pump stations and similar
            • Irrigation systems
            • Inlets and outlets conducting cooling water or circulation
            • WWTP outlets and many more
            • Industrial flow measurements, process water, pressurised pipelines
            • and many more

          • NIS Pipe Sensor

          • for use in pipelines
            For full pipes. Ideal for flow measurement of process water and dirty water lines as well as hydropower pipelines.

            • Ultrasonic transit time sensor for connection to NivuFlow 650
            • Resistant sensor material for use in various media
            • Measurement in full pipes. Ideal for retrofitting or replacement.
            • Measurement in clear to slightly polluted water
            • One sensor for all diameters (DN 100 to DN 6.000)
            • Up to 100 m of cable length between sensor and transmitter or adapter box
            • NIS pipe sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media.
            • NIS pipe sensors are used for flow measurement in full pipes featuring various dimensions.

            Readings are detected based on the ultrasonic transit time principle which allows high accurate measurement results.
            Thanks to perfectly matched mounting material ranging from ball valves to tapping saddles the system is ideal for retrofitting or for replacement of existing flow measurement systems.

            Typical NIS pipe sensor applications
            • Fixed measurements in full pipes in hydropower plants, pump stations and similar
            • Irrigation systems
            • Inlets and outlets conducting cooling water or circulation
            • WWTP outlets
            • Dirty water pipelines
            • Industrial flow measurements, process water
            • Retrofitting and Replacement of existing flow measurement system
            • and many more

          • NIS Wedge Sensor

          • for large pipes and channels
            适用于流量测量部分和full large pipelines and channels using up to 8 measurement paths.

            • Ultrasonic transit time sensor for connection to NivuFlow 650 and NivuFlow 600
            • Flow measurement with highest accuracy
            • Measurement in clear to slightly polluted water
            • Measurement in part filled and full geometries
            • Resistant sensor material for use in various media
            • Up to 100 m of cable length between sensor and transmitter or adapter box

            NIS wedge sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media.
            NIS wedge sensors are used for flow measurement in full pipes featuring various dimensions.

            Readings are detected based on the ultrasonic transit time principle which allows versatile use with high accurate measurement results. Thanks to perfectly matched mounting material the system is ideal for retrofitting of large geometries such as cooling water channels, pipes and surface waters or for replacement of existing flow measurement systems.

            Typical NIS wedge sensor applications
            • Fixed measurements in full pipes in hydropower plants, pump stations and similar
            • Irrigation systems
            • Inlets and outlets conducting cooling water or circulation
            • WWTP outlets
            • Dirty water pipelines
            • Industrial flow measurements, process water
            • Retrofitting and Replacement of existing flow measurement system
            • and many more

          • NIC Clamp-On Sensor

          • For contactless flow measurement in pipes
            Clamp-on ultrasonic flow meter is ideal for retrofitting system at flow measurement places as well as for monitoring of drinking water networks. Unaffected by pressure and temperature.

            • Ultrasonic transit time sensor for connection to NivuFlow 600
            • Clamp-on system. No contact to measurement medium
            • 2-path measurement
            • Measurement in clear to slightly polluted water
            • Ideal for retrofitting or replacement in the drinking water area
            • Up to 100 m of cable length between sensor and transmitter or adapter box

            Clamp-on ultrasonic flow meter sensors are part of a measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media.

            The sensors of this non contact flow meter are used for flow measurement in full pipes featuring various dimensions.

            由于卡箍式设计没有联系between sensor and the measurement medium. The sensors therefore are particularly suitable for use in the drinking water area. Measurement tasks can be carried out very easy within very short time without any greater effort. This applies for high pressures as well as for aggressive and abrasive media.

            Typical clamp-on sensor applications
            • Fixed measurements in full pipes in hydropower plants, pump stations and similar
            • Monitoring of drinking water plants and networks
            • Irrigation systems
            • Inlets and outlets conducting cooling water or circulation
            • WWTP outlets
            • Dirty water pipelines
            • Industrial flow measurements, process water
            • Retrofitting and Replacement of existing flow measurement system
            • and many more

          • OFR Radar sensor

          • OFR Radar – contactless flow measurement
            Suitable for applications featuring high velocities and low levels.

            • Contactless flow velocity measurement
            • Installation without interrupting processes
            • Ex-Approval zone 1 optional
            • Determination of surface velocity
            • Low maintenance through contactless radar sensor
            • Easy installation and operation
            • For use in aggressive / abrasive media
            • For measurement places with high pollution loads and sedimentation
            • For shooting discharge and low flow level
            • Improved accuracy in combination with bottom-mounted ultrasonic velocity sensors

            By developing the OFR radar sensor in combination with our previous product range we are capable of providing the best possible measurement solution to detect any kinds of flow in each application.
            Whether for measurement places with highest accuracy requirements or for applications with difficult media – we provide easy-to-install measurement systems achieving optimum results.
            The unique combination of radar measurement and ultrasonic measurement provides previously unprecedented accuracy covering the entire measurement range.

        • Polluted Media

            • NivuFlow 550

            • Radar Flow Meter
              Contactless flow measurement for open channels and part filled pipes

              • Low maintenance through contactless radar sensor
              • Easy installation and operation
              • Ideal for use with all liquids, even aggressive / abrasive media
              • Modular flexible installation
              • Contactless Radar Flow Metering

              The contactless low-maintenance radar sensor provides reliable operation even at very high discharge velocities with low flow levels. Dynamic hydraulic models for various channel shapes based on varying filling levels enable accurate detection of the real flow rate.

              Introducing the NivuFlow 7550 we provide a transmitter for Hybrid flow measurement using radar and ultrasonic technology.

              Easy Installation and Handling
              Due to DIN rail mounting options the compact transmitter saves space and can be installed easily in control cabinets. Moreover the NivuFlow 550 is available with a special protected field enclosure for use under harsh ambient conditions. The large graphic display permits quick and easy commissioning of the flow meter system.

              Due to the modular construction of our radar flow meter system we can provide the appropriate solution for each application

              NivuFlow 550提供了扩展诊断选项and facilitates in-depth analysis of running processes on site. The transmitter software is in line with current requirements. Future-proof protocols and versatile communication and integration options open many ways for operators to integrate the devices into higher systems such as SCADA or process control systems.

              Typcal applications for NivuFlow 550
              • Measurement places with high pollutant load and sedimentation
              • Measurement places featuring bed load / debris
              • Measurement places with installation restrictions in the channel
              • Shooting discharge at low flow levels and high velocities

            • NivuFlow 750 Flow Meter

            • High accurate with intuitive operation
              超声波流量测量的轻微heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions.

              • Very high accuracy flow meter by means of ultrasonic cross correlation method
              • Certified according to MCERTS - Sira MC160303/00
              • Up to 3 measurement spots as well as up to 9 flow sensors (Version M9)
              • Real-time indication of real flow velocity profiles
              • Suitable even for very demanding applications
              • Intuitive, modern operating concept for quick and easy commissioning
              • Large colour graphic display
              • Integrated numeric flow models
              • Ultrasonic flow measurement in all channels, part filled and full pipes as well as flumes
              • No calibration required
              • Comprehensive diagnostic functions for reliable commissioning and quick maintenance
              • Spatial allocation of measured single velocities
              • Compact DIN rail flow meter for narrow switching cabinets
              • Field enclosure with large terminal housing for comfortable installation on site
              • Quick wiring thanks to front-side access
              • Universal standardised interfaces for easy connection

              Flow metering at the highest technical level
              The NivuFlow 750 flow meter is the successor to the well-known OCM Pro CF. Compact dimensions of the flowmeter allow DIN-rail installation and installation in switching cabinets even under confined space conditions and in narrow housings.

              Combined front-side cage spring terminal clamps ensure quick and easy wiring as well as quick and easy transmitter exchange without tools.

              The modern, intuitive one-hand operation using the rotary pushbutton in context with the high-resolution, easy-to-read graphic colour daylight display allows very quick and easy, cost-efficient commissioning on site. No extra input devices or software components are required.

              Typical applications
              • WWTPs
              • Channel networks
              • Discharge structures
              • Industrial wastewater networks
              • Discharge
              • Drainage lines
              • Return sludge lines
              • Recirculation lines
              • and many more

            • NivuFlow 7550

            • Hybrid Flow Measurement with Surface Radar and Ultrasonic Profile Scanner
              Flow measurement for open channels as well as part filled pipes. Optimum results through combination of ultrasonic cross correlation and radar technology.

              Hybrid Flow Measurement
              NivuFlow 7550 is a hybrid measurement system which was particularly developed for flow metering in part filled pipes, channels and surface waters. Mainly in difficult applications the flow meter stands out for reliable results thanks to its advantages by using two measurement technologies.

              Contactless Radar Flow Measurement
              The contactless low-maintenance radar sensor provides reliable operation even at very high discharge velocities with low flow levels. Dynamic hydraulic models for various channel shapes based on varying filling levels enable accurate detection of the real flow rate.

              Ultrasonic Flow Measurement as Overflow Sensor
              The ultrasonic cross correlation sensor can be used as overflow sensor. In such cases the sensor provides reliable and accurate results in overflow situations where radar sensors cannot be used for measuring. Thanks to the flow profile detection and the detection of sedimentation on the bottom the flow rate is determined very accurately. Information on sedimentation is also considered for further measurements using the radar system.

              Ultrasonic Flow Measurement as Redundant Measurement
              The ultrasonic sensor can be used as permanent redundant measurement too. Installing the sensor on the side walls above the sedimentation helps to avoid soiling. The detection of local flow velocities covers the entire channel width and guarantees the determination of very accurate flow profiles. Pre-programmed hydraulic models increase the accuracy of the measurement system.

              Typical NivuFlow 7550 Applications
              • Continuous and reliable flow metering in overflow situations
              • Sedimentation detection with ultrasonic level measurement in case of overflow
              • Measurement places featuring high dirt loads and sedimentation
              • Measurement places featuring bed load / debris
              • Measurement places with limited installation options within the channel
              • Reliable flow metering in shooting discharge and low flow levels

            • NFP Flow Meter

            • High accurate for full pipes

              • Cost-efficient alternative to conventional EMFs/mag meters. For continuous flow measurement in slight to heavily polluted media in full pipes
              • Cost-efficient alternative to EMFs/mag meters considering the total costs
              • Very high measurement accuracy
              • Quick and easy retrofitting for all pipe materials
              • Uncomplicated and reliable commissioning even under process conditions
              • Flow metr for river water, rainwater, dirty water, sludge, cooling water, domestic and industrial wastewater and more.
              • ATEX approval for Ex-Zone 1
              • Easy assessment of measurement places
              • Easy-to-read display
              • For use with Type POA pipe sensors

              NFP (NIVUS Full Pipe) flow meter was developed particularly for flow measurement in full pipes from DN 100 to DN 800. The system is based on the cross correlation principle for slight to heavily polluted media. The NFP combines grid measurements featuring adapted weighting of areas with velocity profile correction.
              The unit stands out for highest measurement accuracy and a very good price-performance ratio. Appropriate NIVUS accessories facilitate installation and maintenance at low costs. The NFP therefore is ideal also to replace obsolete or defective EMFs and other measurement systems. Existing flow meters do not have to be dismantled.

              Typical NFP applications
              • Pump stations for rainwater, dirty water and combined water
              • WWTPs
              • Pressurised pipelines
              • Drainage pipelines
              • Return sludge pipelines
              • Recirculation pipelines
              • and many more

            • PCM Pro Flow Meter

            • for portable and high accurate flow measurement
              For portable ultrasonic flow measurement of slight to heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions

              • Very high accuracy flow meter
              • Can be programmed directly in Ex-areas
              • Clear text menus
              • Startup wizard
              • Clear diagnostics and simulation functions
              • Corrosion-proof enclosure
              • Can be used without grounding
              • Easy assessment of flow conditions through indication of the real flow profile directly on the flow meter display
              • Redundant data storage
              • Online-verification of measurement data

              General description
              Flow measurements are absolutely necessary when it comes to assess the hydraulic conditions of sewage networks or special constructions.
              The importance of portable, power-independent flow meters for determination of infiltration, channel efficiency, sewerage master planning or influent control is hence continuously rising. Reliable and significant data representing typical operational conditions of the measurement places are to be gained with the help of these data.
              It is very often required to carry out the measurements only for a few weeks or months to obtain representative data.

              A measurement system for portable flow measurements basically consists of a transmitter Type PCM for power supply, data entry, indication and data storage plus a sensor for the recording of measurement data.

              Sensor construction as well as the built-in pickups may be customised individually according to the conditions prevailing on site.

              For flow velocity measurement starting at flow levels as low as 3 cm up to several meters there is a wide selection of sensors available.

              Typical PCM Pro Ex applications
              • 渠道网络:测定渗透,channel efficiency, influent control, determination of discharge volumes and creation of sewerage master plans
              • 测量活动
              • Pump stations: verification of performance and wear
              • and many more

            • PCM 4 Flow Meter

            • for portable and high accurate flow measurement
              For portable ultrasonic flow measurement of slight to heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions.

              • Very high accuracy
              • Clear text menus
              • Startup wizard
              • Clear diagnostics and simulation functions
              • Corrosion-proof enclosure
              • 简单的评估彻底籼稻流条件tion of the real flow profile directly on the flow meter display
              • Redundant data storage
              • Online-verification of measurement data
              • Direct sampler control

              General description
              测量是绝对必要的时候来了s to assess the hydraulic conditions of sewage networks or special constructions.
              The importance of portable, power-independent flow meters for determination of infiltration, channel efficiency, sewerage master planning or influent control is hence continuously rising. Reliable and significant data representing typical operational conditions of the measurement places are to be gained with the help of these data.
              It is very often required to carry out the measurements only for a few weeks or months to obtain representative data.
              A measurement system for portable flow measurements basically consists of a transmitter Type PCM for power supply, data entry, indication and data storage plus a sensor for the recording of measurement data.
              Sensor construction as well as the built-in pickups may be customised individually according to the conditions prevailing on site.
              For flow velocity measurement starting at flow levels as low as 3 cm up to several meters there is a wide selection of sensors available.

              Typical PCM 4 applications
              • 渠道网络:测定渗透,channel efficiency, influent control, determination of discharge volumes and creation of sewerage master plans
              • 测量活动
              • Pump stations: verification of performance and wear
              • and many more


            • OCM F Flow Meter

            • for flow measurement based on the Doppler principle
              超声波流量测量的轻微heavily polluted media in part filled an full pipes and channels. Complete measurement system in connection with KDA sensors

              • Cost-effective to purchase
              • Intelligent Doppler Technology
              • Connection of Type KDA sensors
              • Easy and multilingual programming in dialog mode
              • All outputs can be simulated
              • Integrated 3-step controller

              General description
              The OCM F flow meter utilises a fully bidirectional ultrasonic Doppler flow velocity sensor Type KDA. The newly developed intelligent Doppler sensor detects and directly evaluates the flow velocity.
              Levels can be measured by either using the sensor-integrated pressure sensor or an external sensor.

              Operation / Programming
              Thanks to the intuitive user interface it is very easy to set up the OCM F for the requirements of various applications. Programmed settings are indicated clearly. This virtually eliminates mal-function due to faulty programming. Current readings are indicated clearly on the large back-lit graphic display.

              Typical OCM F applications

              • Permanent measurements on storm water basin, storm water retention basin, storm water sedimentation tank
              • Discharge volume measurements
              • Flow measurements in channel networks
              • WWTPs: intake, discharge, intake to activated sludge tanks, return sludge, recirculation
              • Industrial wastewater networks
              • and many more

            • NivuLog SunFlow Flow Meter

            • Solar-powered for full and partial filling
              Self-sufficient measurement station with integrated data transmission via GPRS. For discontinuous flow measurement in slight to heavily polluted media

              • Solar-powered flow measurement station independent from mains power
              • Extremely robust and compact IP68 enclosure
              • Solar panel protected by armoured glass
              • Integrated rechargeable buffer battery and charging control
              • Direct connection of sensors using encapsulated terminal housing
              • Adjustable measurement and transmission cycles
              • Storing, processing, indication and calculation of measurement data using D2W – Internet portal Device to Web

              The NivuLog SunFlow is a self-sufficient, solar-powered flow measurement station independent from mains power with integrated GPRS data transmission. The discontinuous flow measurement is suited for slight to heavy polluted media in open channels, flumes as well as in part filled and full pipes.

              The NivuLog SunFlow is designed for flow measurement, storage and transmission of data in locations without mains power supply. The very robust aluminium cast enclosure with IP68 protection is covered with armoured glass and contains all necessary components such as data logger, modem, charging control and rechargeable batteries. Thanks to the compact construction it is perfectly suited for use in free and rough terrain. A Doppler flow velocity sensor type KDS with optional integrated level measurement is connected directly to the system.

              Typical NivuLog SunFlow applications
              Flow measurement in stormwater tanks, channel networks, irrigation channels, mine water cleaning plants, natural streams etc.

              Optional Accessories
              Robust mast holder set for fastening and adjustment of the measurement station on a mast with diameters between 70 – 90 mm. Material stainless steel 1.4571

            • PCM F Flow Meter

            • for portable flow measurement
              For portable ultrasonic flow measurements from slight to heavily polluted media using the Doppler principle in part filled and full pipes and channels.

              • Clear text menus
              • Startup wizard
              • Clear diagnostics and simulation functions
              • Corrosion-proof enclosure
              • Redundant data storage
              • Direct sampler control
              • Flow measurement based on the Doppler principle

              General description
              测量是绝对必要的时候来了s to assess the hydraulic conditions of sewage networks or special constructions.

              The importance of portable, power-independent flow meters for determination of infiltration, channel efficiency, sewerage master planning or influent control is hence continuously rising. Reliable and significant data representing typical operational conditions of the measurement places are to be gained with the help of these data.

              It is very often required to carry out the measurements only for a few weeks or months to obtain representative data.

              Typical PCM F applications
              • 渠道网络:测定渗透,channel efficiency, influent control, determination of discharge volumes and creation of sewerage master plans
              • 测量活动
              • Pump stations: verification of performance and wear
              • and many more

            • OCM Pro CF Flow Meter

            • High accurate for slight to heavily polluted media
              For ultrasonic flow measurements in slight to heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions

              • Very high measurement accuracy
              • Certified according to MCERTS - Sira MC130219/01
              • Absolutely stable zero point and drift-free
              • No electrodes, no conductivity required
              • Measurement in all channels, part filled and full pipes as well as flumes
              • Measurement even in heavily polluted and abrasive media (e.g. return sludge and digested sludge)
              • No calibration required
              • Suitable even for very difficult applications
              • Easy installation without additional constructions
              • Ideal for retrofitting in existing applications
              • Measures and indicates the real flow velocity profiles
              • Spatial allocation of measured single velocities through cross correlation with digital pattern detection
              • Ex approval Zone 1 according to ATEX
              • Very easy, multilingual setting of parameters in dialog mode
              • Large, back-lit graphic display
              • Storage of all measurement data on Compact Flash Card
              • Integrated Modbus TCP
              • Worldwide TCP/IP communication online connection/data transmission and remote maintenance via Internet
              • Exact flow measurement

              NIVUS flow measurement systems stand for innovation and highest accuracy.
              The OCM Pro CF, proven a thousand times, is a permanent measurement system for continuous flow measurement , flow control and storage of recorded flow data within the range of slight to heavily polluted media of various consistencies.
              The system can be used as initial equipment or retrofitting in part filled and full flumes, channels and pipes featuring various shapes and dimensions.
              OCM Pro CF provides fast processors for signal processing, Modbus TCP as well as online connection via Internet.

            • POA Correlation Wedge Sensor

            • Medium measurement range for levels up to ca. 1m
              超声波流量测量的传感器high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom

              • For high-accurate flow measurement by means of ultrasonic cross correlation method
              • Interference-free connection over long distances through digital signal transmission
              • Cables can be extended without any problems using standard cables
              • Absolutely stable zero point and drift-free
              • Measurement in heavily polluted and abrasive media
              • Easy installation without additional constructions and perfectly matched mounting accessories
              • Installation under process conditions possible
              • Suitable for all channel cross sections
              • The tailored selection of sensor constructions ensures the best possible solution for each application

              POA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
              The wedge-shaped sensors are designed for installation on either the channel wall or the channel bottom. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

              POA楔的典型应用传感器
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Permanent measurements on stormwater treatment facilities such as stormwater overflow tanks, rainwater sedimentation and retention tanks
              • Direct discharge control, infiltration (extraneous water) or leakage detection
              • Industrial wastewater networks
              • 测量活动in channel networks
              • and many more

            • POA Correlation Pipe Sensor

            • Medium measurement range for levels up to ca. 1m
              超声波流量测量的传感器high accuracy in slight to heavily polluted media. For installation in pipes from the outside

              • For high-accurate flow measurement by means of ultrasonic cross correlation method
              • Interference-free connection over long distances through digital signal transmission
              • Cables can be extended without any problems using standard cables
              • Absolutely stable zero point and drift-free
              • Measurement in heavily polluted and abrasive media
              • Easy installation without additional constructions and perfectly matched mounting accessories
              • Installation under process conditions possible
              • Suitable for all channel cross sections

              POA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
              The pipe-shaped sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

              Typical applications for POA pipe sensors
              • Stormwater treatment plants: flow measurements and control of the discharge to the WWTP
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Direct discharge control, infiltration (extraneous water) or leakage detection
              • Industrial wastewater networks
              • and many more

            • CS2 Correlation Wedge Sensor

            • Large measurement range for high flow levels
              超声波流量测量的传感器high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom

              • For high-accurate flow measurement by means of ultrasonic cross correlation method
              • Interference-free connection over long distances through digital signal transmission
              • Cables can be extended without any problems using standard cables
              • Absolutely stable zero point and drift-free
              • Measurement in heavily polluted and abrasive media
              • Easy installation without additional constructions and perfectly matched mounting accessories
              • Installation under process conditions possible
              • Suitable for all channel cross sections
              • The tailored selection of sensor constructions ensures the best possible solution for each application

              CS2 flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media in channels mainly featuring high levels.
              The wedge-shaped sensors are designed for installation on either the channel wall or the channel bottom. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

              Typical applications for CS2 wedge sensors
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Industrial wastewater networks
              • Large Collectors
              • Particularly suitable for large channels featuring levels starting at 500 mm

            • CS2 Correlation Pipe Sensor

            • Large measurement range for big pipes
              超声波流量测量的传感器high accuracy in slight to heavily polluted media. For installation in pipes starting at 1000 mm diameter

              • Very high accuracy by means of ultrasonic cross correlation method
              • Interference-free connection over long distances through digital signal transmission
              • Cables can be extended without any problems using standard cables
              • Absolutely stable zero point and drift-free
              • Measurement in heavily polluted and abrasive media
              • Easy installation without additional constructions and perfectly matched mounting accessories
              • Installation under process conditions possible
              • Particularly suitable for pipe sections starting at 1000 mm diameter

              CS2 flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
              The pipe-shaped sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

              Typical applications for CS2 pipe sensor
              • Channel networks: billing measurement places, flow measurement in large pipe sections
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Industrial wastewater networks
              • and many more

            • Mini Correlation Sensor

            • Measurements starting at flow levels of 3 cm
              超声波流量测量的传感器high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom

              For high-accurate flow measurement by means of ultrasonic cross correlation method
              • Infiltration measurement (extraneous water)
              • Influent control
              • Billing measurement places
              • Discharge constructions
              • Precipitation discharge measurements
              • The Mini sensor family provides the best possible sensors to detect lowest flow levels e.g. for infiltration measurement (extraneous water) or indirect discharge measurement.
              • The sensors use the proven ultrasonic cross correlation method patented by NIVUS. This method allows to detect and to indicate flow profiles starting at flow levels as low as a few centimeters.

              Due to their shape the sensors are particularly suitable for small geometries and help to avoid backwater effects, the risk of build-up and clogging.

              Typical applications for Mini sensors
              • 测量活动in channel networks
              • Small WWTPs: intake and discharge
              • Industrial wastewater networks
              • Particularly suitable for channels featuring low flow levels

            • KDA Doppler Wedge Sensor

            • Wedge-shaped flow velocity sensor for channels
              Ultrasonic sensors for flow measurement in slight to heavily polluted media. Wedge shape for installation on channel wall or channel bottom

              • Latest fourth-generation intelligent Doppler technology
              • Cost-effective pricing
              • Suitable for all channel cross sections
              • Easy to install without the need for additional constructions
              • Cables can be extended without any problems
              • Measurement in heavily polluted and abrasive media
              • Built-in pressure cell mechanically protected

              KDA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media. The wedge-shaped sensors are designed for installation on either the channel wall or the channel bottom.

              Combined with transmitter types such as PCM F and OCM F the result is a complete flow measurement system.

              Typical applications for KDA wedge sensors
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Permanent measurements on stormwater treatment facilities such as stormwater overflow tanks, rainwater sedimentation and retention tanks
              • Direct discharge control, infiltration (extraneous water) or leakage detection
              • Industrial wastewater networks
              • 测量活动in channel networks
              • and many more

            • KDA Doppler Pipe Sensor

            • Flow velocity sensor for installation in pipes
              Ultrasonic sensors for flow measurement in slight to heavily polluted media. Designed for fastening in pipes using a nozzle

              • Latest fourth-generation intelligent Doppler technology
              • Cost-effective pricing
              • Suitable for all channel cross sections
              • Easy to install without the need for additional constructions
              • Cables can be extended without any problems
              • Measurement in heavily polluted and abrasive media

              KDA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media. The pipe sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as PCM F and without OCM F the result is a complete flow measurement system.

              Typical applications for KDA pipe sensors
              • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
              • Permanent measurements on stormwater treatment facilities such as stormwater overflow tanks, rainwater sedimentation and retention tanks
              • Direct discharge control, infiltration (extraneous water) or leakage detection
              • Industrial wastewater networks
              • and many more

            • OFR Radar sensor

            • OFR Radar – contactless flow measurement
              Suitable for applications featuring high velocities and low levels.

              • Contactless flow velocity measurement
              • Installation without interrupting processes
              • Ex-Approval zone 1 optional
              • Determination of surface velocity
              • Low maintenance through contactless radar sensor
              • Easy installation and operation
              • For use in aggressive / abrasive media
              • For measurement places with high pollution loads and sedimentation
              • For shooting discharge and low flow level
              • Improved accuracy in combination with bottom-mounted ultrasonic velocity sensors

              By developing the OFR radar sensor in combination with our previous product range we are capable of providing the best possible measurement solution to detect any kinds of flow in each application.
              Whether for measurement places with highest accuracy requirements or for applications with difficult media – we provide easy-to-install measurement systems achieving optimum results.
              The unique combination of radar measurement and ultrasonic measurement provides previously unprecedented accuracy covering the entire measurement range.

            • NivuGuard 2

            • Non-contact flow monitoring
              Non-contact flow monitoring for polluted respectively high polluted media in full pipelines

              • Non-contact measurement
              • No transmitter required
              • Pressure and temperature independent
              • Easy retrofitting without the need for pipe works and operational interruptions
              • For use on pipes from DN50 to DN350
              • Very robust enclosure

              The NivuGuard 2 sensor is for flow monitoring in full pipelines by using a specially developed Doppler method. Thanks to the clamp-on technology the sensor can be installed very quick and easy from the outside. The integral signal evaluation allows to operate the sensor without transmitter. The sensor can be set up directly by using a free software. The very robust enclosure is perfect for use in harsh ambient conditions. Due to clamp-on installation the NivuGuard 2 can be moreover used on pipelines conducting highly abrasive and aggressive media.

              Featuring cost-efficient commissioning and variable areas of use the measurement system is mainly suitable particularly for retrofitting. The NivuGuard 2 can be used on pipes made of plastic, stainless steel, steel or cast iron.

              Der optionally available NivuGuard Monitor serves as indication instrument and provides more signal outputs. The sensor can be set up as well by using the Monitor‘s large keypad.

              Typical Applications
              Dry run protection and flow monitoring on:
              • pump lines
              • sludge lines
              • wastewater pipelines

          • Hydraulic Flow Measurement

          • Hydraulic flow measurement systems determine flow rates or overflow volumes on weirs with the aid of level measurement. The measurement is mostly applied on hydraulic constructions such as weirs featuring varying shapes or in Venturi flumes.

              • NivuSmart Q

              • Smart Flow Metering for part filled Pipes and Channels
                Hydraulic flow measurement using two parallel level readings. Accurate, contactless and with low maintenance requirements.

                • Non-contact measurement
                • Low maintenance
                • Accurate method (calibration using cross correlation; <2% deviation)
                • Detects negative flow
                • Detection of backwater and free discharge

                NivuSmart Q is a new measurement method for flow rate detection using two parallel level readings. The levels are measured in a known distance, e.g. by measuring in two consecutive shafts within a sewer system. The NIVUS exclusive metering system is putting geometrical conditions (such as slope, diameter and width of a channel etc.) and latest hydraulic flow models in relation to each other.

                By using site-specific equations it is possible to compute flow rates with a remarkably high accuracy. The accuracy is comparable to other non-contact flow measurement systems. Calibrating the system provides an extra increase in accuracy.

                The System
                Level measurements and GPRS data loggers are battery-powered.
                The level readings are transmitted automatically to a centralised data management system.

                • Independent from mains power
                • Easy installation
                • Long-life high performance battery
                • Automatic and reliable data transmission
                • Contactless
                • Easy integration into SCADA or measurement data evaluation
                • Ex version available

                Typical Applications
                • Measurement sites featuring difficult maintenance conditions
                • If it is not possible to install the measurement system in the channel, such as in glass fibre reinforced pipelines
                • If there is no mains power or communication infrastructure available
                • Redundant flow metering

              • HydraulicCalculator Plus

              • Flow meter for discharge volume calculation
                HydraulicCalculator Plus calculates discharge volumes on weirs with different shapes according to DWA A111

                Flow calculator for discharge volume determination on weirs with different shapes according to DWA A111

                • Calculation methods according to DWA A111 implemented
                • Correct discharge calculation even in backwater conditions and tangential flow
                • Direct connection of 2- and 3-wire sensors
                • Ex Zone 1 (option)
                • Comfortable user menus in dialog mode
                • Large graphic display with bargraph indicator

                The HydraulicCalculator Plus flow meter provides integrated, DWA-conform calculation algorithms for discharge calculation on lateral weirs with tangential flow as well as weirs susceptible to backwater and compensates the calculation errors occurring with common discharge volume measurement systems.
                Additional calculation methods for use with special constructions such as slot outlets with or without backwater formation, discharge below slide valves, water level correction on weir flaps etc. complete the performance profile.

                The flow calculator features intrinsically safe power supply of 2-wire sensors for Ex-Zone 1 (such as NivuNivuBar Plus, NivuCompact) as well as 2 analog outputs and 5 relays. The device can be easily programmed by using the 6 keys in conjunction with dialog menus on a large back-lit graphic display.
                Relevant calculation parameters can be selected easily and diagnostic tools for inputs and outputs, transmitter status, parameter modifications etc. are available as standard.
                All required readings and calculation values are clearly indicated as digits or simultaneously as bargraph if desired.

              • Inclinometer

              • for slope detection of moving weir flaps
                The new electronic NDW 2 inclinometer utilises a modern measurement method based on MEMS technology for gravitational inclination measurement (rotational angle measurement).

                • Ex approval II 2 G Ex ib IIB T4 (optional)
                • Wear-free
                • Corrosion-proof
                • No moving parts
                • Robust design
                • High accuracy
                • Maintenance-free
                • Reliable
                • High operational safety
                • Fully immersible (IP68)
                • Mercury-free

                By detecting inclination without the use of shafts it is possible to capture the position of movable weir flaps or other movable and inclinable components such as sluice boards or slide valves without any problems. Overflow volumes or other flow volumes thus can be easily determined by using a Q/h relation or detected angles.
                Existing weir flaps can be easily retrofitted by installing the unit on the inclined plane.

                NDW 2 combines high accuracy and operational safety with robust design.
                The compact unit is free of wear since the measurement principle does not use any movable parts and hence provides reliable measurement results even under flood conditions (IP68).
                NDW 2 provides a 4 - 20 mA signal proportional to the angle of inclination (0 - 90° or 0 - 60°) to obtain overflow data.
                Following devices such as HydraulicCal-culator Plus, NivuCont Plus, NivuFlow, NivuLog or PCS/SCADA systems use flap-specific data to compute accurate overflow volumes.

              • Venturi Half Shells

              • for classical flow measurement using Q/h
                Corrosion-proof Venturi half shells according to DIN 19559/II for installation in various part filled channels with vertical walls

                • Corrosion-proof through stainless steel 1.4571 (V4A)
                • Construction according to DIN 19559/II
                • Individually made following existing channel dimensions and expected volumes
                • Easy installation without chiselling and concreting works
                • Uncomplicated correction of discharge curves in case of inappropriate dimensions

                Venturi half shells
                The durable corrosion-proof Venturi half shells are easily installed on vertical channel walls by using the accompanying fastening materials. This eliminates the common problems with compact Venturis regarding dimensional accuracy. – If the channel dimension should change simply a correct discharge characteristic based on the correct channel width is used.
                Thanks to being manufactured from stainless steel possible weathering or corrosion due to unknown organic solvents partially contained within the wastewater is avoided. The risk of breaking is avoided as well and the lifespan of the stainless steel half shells is virtually unlimited.

            • Non-contact level measurement

            • We provide reliable continuous non-contact level measurement using ultrasound or hydrostatically by using pressure cells as well as reliable measurement of level detection. Our ultrasonic or hydrostatic level measurement systems reliably and accurately detect the levels of liquid media.

                • Ultrasonic Level Measurement

                • The range of our non-contact ultrasonic level measurement systems comprises ultrasonic sensors and meters. The ultrasonic sensors range from the i-Series sensors, the NivuCompact echo sounder to the P-Series sensors and the OCL air-ultrasonic sensor.

                    • i-Series Sensors

                    • Intelligent sensors for level measurement
                      Ultrasonic sensors with integrated transmitter for measurement of distance, level, empty space or volumes. Suitable for harsh ambient conditions.

                      • Sensor as independent, comfortable level measurement
                      • Alarm output in case of flooding possible
                      • Pre-programmed measurement range steps of 3, 6, 10 and 15 m
                      • Ideally suitable for battery operation through quick measurement times
                      • Resistant to humidity, aggressive environments and heavy temperature fluctuations
                      • IP68 protection
                      • Can be directly connected to PLC
                      • Saves time and space, no transmitter installation needed
                      • DATEM - digital echo processing with automatic false echo avoidance
                      • Ex-approval according to ATEX for Zone 1; optional for Zone 0
                      • Easy wiring directly to terminal unit in Ex-areas (no Zener barrier required)

                      i-Series level sensors can be used to measure distance, level, empty space or volumes of liquids in any application where highly accurate level measurements are required.

                      The level sensors are designed for use in poor ambient conditions. Soiling as well as wear and tear is avoided thanks to non-contacting measurement.

                      Since transmitter and sensor share the same fully encapsulated enclosure the unit can be easily installed with low space requirements. Extensive programming works are not needed through pre-programmed measurement range steps. The sensors can be directly connected to any PLC, NIVUS GPRS data logger and all systems processing measurement values featuring an active mA-input.

                      Typical applications
                      • Wastewater: stormwater overflow tanks and storage sewers, clarifiers, pump stations, screening plants, flow measurements, tank volume measurements, container monitoring, irrigation facilities
                      • Drinking water: tank level measurements, water treatment, sweater desalination plants, level measurements
                      • Flood protection: stormwater retention tanks, level measurements with remote data transmission, surface water bodies
                      • Power generation: cooling water circuits, hydropower plants

                    • P-Series Sensors

                    • Ultrasonic sensors for level measurement
                      P-Series sensors are suitable for continuous level measurement in the water and wastewater sector. For connection to NivuMaster-Series evaluation units. Suitable for harsh ambient conditions.

                      • 非常损失w in maintenance through non-contact measurement
                      • Extremely versatile thanks to measurement ranges from 0.07 m to 40 m
                      • Protection IP 68
                      • ATEX approval for Ex-Zone 0 and 1
                      • Alarm output in case of flooding possible
                      • Resistant to moisture, aggressive environments and heavy temperature fluctuations

                      超声波传感器和集成温度compensation for connection to NivuMaster- Series evaluation units provide a wide variety of measuring options for liquids.

                      The sensors provide accurate and reliable readings even in narrow tanks, no matter what measurement range or application. False echoes reflected from built-in obstructive constructions are negligible since they will be avoided automatically.
                      The sensors are available with 1"-thread or as flange version according to DIN and thus can be installed without any problems.

                      Typical applications for P-Series sensors
                      • Level measurements in the water and wastewater sector
                      • Flow measurements in open flumes and weirs
                      • Volume measurements in tanks
                      • Comparative measurements on screens
                      • Pump control in pump stations

                    • OCL Air-Ultrasonic Sensor

                    • for level measurement in combination with flow measurents
                      Intelligent air-ultrasonic sensor for connection to flow transmitters such as NivuFlow 750, OCM Pro and PCM for non-contact level measurement in part filled flow measurement places.

                      • Direct sensor connection to flow transmitters such as NivuFlow 750, OCM Pro and PCM
                      • Small construction height
                      • Low dead zone
                      • Digital echo processing and linearisationNarrow beam angle
                      • Optimised construction for small pipes
                      • Easy installation using pipe mounting system or direct fasting using bolts
                      • View echo profiles on the transmitter
                      • Integrated temperature compensation
                      • ATEX approval for Ex-Zone 1

                      The compact air-ultrasonic sensor Type OCL has been developed for direct connection to portable and permanent flow transmitters such as NivuFlow 750, OCM Pro and PCM.
                      Thanks to the slim construction it is ideally suitable for use in the crown of small and large pipes, on channel ceilings or other constructions.
                      The low dead zone allows to measure variable levels in flow applications almost up to full filling. The integrated temperature measurement ensures very high accuracies over the entire very wide measurement range.
                      The ATEX approval in Ex Zone 1 is a standard feature.

                    • NivuCompact Echo Sounder

                    • for level and volume measurement

                      Ultrasonic compact echo sounder in 2- and 3-wire version for non-contact measurement of distance, level, empty space or volume. Parameters can be set directly on site without the need to open the enclosure.

                      • Combi unit with sensor and transmitter
                      • Measurement range from 0.2 to 10 m
                      • Digital echo processing and linearisation
                      • Ideal even for battery operation thanks to very short startup and measurement times
                      • View echo profiles on PC
                      • Unit can be programmed on sit without opening the enclosure
                      • Integrated temperature compensation
                      • ATEX批准Ex-Zone 1

                      The NivuCompact is a compact echo sounder for non-contact ultrasonic measurement of level, distance, space or volume. NivuCompact can be used wherever reliable non-contact level measurement is required.
                      Thanks to its very quick startup time of 4 seconds until value output, the NivuCompact is particularly suitable for battery-powered logger operation. High transducer power and tight beam angle in addition with digital echo pro-cessing make the NivuCompact an ideal tool for many "difficult" applications. The integrated display makes programming extremely simple. The NivuCompact is available as 2- or 3-wire version in one unit.

                      Typical Applications
                      • Wastewater: screening plants, flow control sections in stormwater treatment plants, volume measurements in tanks such as precipitants and similar, irrigation plants
                      • Drinking water: tank level measurements, water treatment
                      • Power generation: cooling water circuits, hydropower plants
                      • Industry: liquid level measurement in tanks and containers

                    • NivuMaster Transmitter

                    • For level measurement using ultrasonic sensors
                      For the supply of connected ultrasonic P-Series sensors, processing of signal data and indication of computed readings. Ideal or measurement and control in level and volume applications

                      • Measurement of level, distance, volume, difference and flow
                      • Alarm output in case of flooded sensor possible
                      • Pump control saves energy and costs thanks to intelligent pump management
                      • High measurement reliability through intelligent agitator avoidance
                      • Connection of maintenance-free, Ex-protected ultrasonic sensors
                      • Up to 6 relays and galvanically isolated mA outputs
                      • Easy echo analysis and setting of parameters using free PC software
                      • Integrated emergency power switchover
                      • Easy operation in dialog mode using back-lit graphic display

                      The NivuMaster series transmitters supply connected P-Series sensors, process measurement values and indicate readings. NivuMaster transmitters are ideally suitable for simple control tasks in level measurement applications. Flow measurements in open channel using a Venturi flume or Q/h-relations, on any kind of weir or discharge sills are possible without any problems.

                      NivuMaster is available with wall mount enclosure, as 19"-plugin or with panel mount enclosure.

                      The few parameters required for measuring can be entered easily on site in dialog mode thanks to the back-lit display and the integrated keypad.
                      Parameters can be evaluated using the free software “PC Software Suite” and the serial interface of the transmitter.

                      Typical NivuMaster Applications
                      • Wastewater: stormwater overflow tanks and storage sewers, clarifiers, pump stations, screening plants, flow measurements, volume measurements in vessels, container monitoring, irrigation facilities
                      • Drinking water: tank level measurements, water treatment, seawater desalination facilities, level measurements
                      • Flood protection: stormwater retention tanks, level measurements with remote data transmission, surface waters
                      • Power generation: cooling water circuits, hydropower plants

                  • Hydrostatic Level Measurement

                  • We provide reliable hydrostatic level measurement for various media. At NIVUS you can find a wide variety of sensors and transmitters.

                      • NivuLevel 150N

                      • elf-sufficient level measurement system
                        Level and temperature measurement with a system lifetime up to 5 years. Internal SD card up to 1.000.000 readings.
                        For use in ATEX Zone 1

                        • Self-sufficient level measurement system
                        • Internal data memory for approx. 1.000.000 readings
                        • For use in ATEX zone 1
                        • Event control
                        • Acquisition of level and temperature readings
                        • Easy replacement of batteries by customer

                        NivuLevel 150 is a self-sufficient level measurement system for
                        use on measurement sites without public power supply. Due to
                        very low energy consumption the system provides very long
                        lifetimes. System programming and data readout can be carried
                        out very easy via USB interface.

                        The NivuLevel 150 measurement system acquires the parameters level and temperature. It consists of a datarecording module and a hydrostatic submersible pressure probe.

                        Depending on the memory cycle selected, the system lifetime is up to 5 years.The unit is powered using standard batteries (Type AA) which can be replaced
                        by the user on site.

                        This ensures efficient and economical operation over many years. Recorded data are saved in an internal memory and can be read out using the USB interface.
                        The capacity of the internal memory is approx. 1.000.000 readings. Once provided as CSV files, the readings can be processed further quickly and easily

                      • Level Data Collector

                      • Level measurement with remote data transmission via GPRS
                        地下水水位数据记录器量水平urement and GPRS data transmission in level pipes starting at 2“. System life up to 10 years.

                        • Extremely robust stainless steel enclosure, IP68
                        • Data transmission via GPRS
                        • Automatic log-on with the most powerful service network without additional costs
                        • Extra-long lifetimes (typical 10 years) through MicroPower® technology
                        • Connection clamps for 2-wire system such as pressure probes

                        General description
                        Robust measurement system, consisting of transmitter and level probe, for data transmission to the server-based Internet portal "D2W" (Device to Web) via GPRS.
                        The water level data logger measuring and data recording system is for detection of analog readings from connected 2-wire sensors such as pressure probes. The measurement system operates independent from mains power. Sensor and radio transmission system are powered by high-performance Lithium batteries featuring a very long lifetime (approx. 10 years typical). Detected readings are saved on flash memory and will be transmitted to the server-based Device to Web (D2W) Internet portal via GPRS using the built-in quad band modem.

                        Typical level data collector applications
                        • Groundwater level measurement
                        • Landfill level monitoring
                        • Raw water level for waterworks
                        • Levels in conservation areas and similar

                      • NivuBar Plus II

                      • Hang-in probe with capacitive ceramic measurement cell
                        Submersible probe with 4 - 20 mA transmitter for hydrostatic level measurement in water and wastewater. Oil-free capacitive ceramic measurement cell

                        • Capacitive ceramic measurement cell
                        • Large front-flush diaphragm
                        • 2-wire probe
                        • High overpressure resistance
                        • Integrated overvoltage protection

                        This hydrostatic level probe has been developed to meet the high demands of industry and environmental protection.
                        The stainless steel (1.4571) probe body is locked by a capacitive ceramic measuring cell at the bottom and is held by the self-supporting cable on the top.
                        The probe can be suspended by using a straining clamp.

                        The non-corrosive enclosure featuring protection IP68 permits universal use for reliable determination of levels in containers, basins, shafts and tanks. The large diaphragm has proven as very reliable, particularly in the wastewater sector.

                        Typical applications for NivuBar Plus II
                        • Pump shafts
                        • Channels
                        • Stormwater treatment plants, storage sewers, retention tanks and discharge constructions
                        • WWTPs (screening control, tank levels, sludge tanks, levels in open channels)
                        • Industrial wastewater networks
                        • and many more

                      • NivuBar H三世

                      • Hang-in probe with HART protocol
                        Submersible probe 4 - 20 mA for hydrostatic level measurement in water and wastewater. Oil-free capacitive ceramic measurement cell and free configurable measurement range via HART.

                        • Capacitive ceramic measurement cell
                        • Large front-flush diaphragm
                        • 2-wire probe
                        • HART protocol
                        • High overpressure resistance
                        • Integrated overvoltage protection
                        • Ex protected

                        This hydrostatic level probe has been developed to meet the high demands of industrial and environmental protection.
                        The stainless steel (1.4571) probe body is locked by a capacitive ceramic measuring cell at the bottom and is held by the self-supporting cable on the top.
                        The probe can be suspended by using a straining clamp.

                        The non-corrosive enclosure featuring protection IP68 permits universal use for reliable determination of levels in containers, basins, shafts and tanks. The large diaphragm has proven as very reliable, particularly in the wastewater sector.

                        The probe is available also as Ex version and thus can be installed in any explosive.

                        Using a laptop with the NIVUS configuration software as well as the HART interface module, the HART protocol allows to universally change the probe’s measurement range.
                        The standard measurement ranges are 10mH2O and 20mH2O and can be at min. 20 % related to the nominal measurement range (FSO) of the probe (e.g. 0 to 2 m or greater with measurement range 10mH2O (FSO) or 0 to 4 mH2O or greater with measurement range 20mH2O (FSO)).
                        Utilising the widely used 2-wire technology, the installation costs are very low.

                        Typical applications for NivuBar H III

                      • NivuBar G II

                      • Hang-in probe with 1” thread and capacitive ceramic measurement cell
                        Submersible probe with 1” thread and 4 - 20 mA transmitter for hydrostatic level measurement in water and wastewater. Oil-free capacitive ceramic measurement cell

                        • Capacitive ceramic measurement cell
                        • heavily polluted liquids, sludge as well as pasty and corrosive media
                        • Large front-flush diaphragm
                        • 1“ thread on sensor bottom
                        • 2-wire probe
                        • Ex Zone 0
                        • High overpressure resistance
                        • Integrated overvoltage protection

                        This hydrostatic level probe has been developed to meet the high demands of industry and environmental protection.
                        The stainless steel (1.4571) probe body is locked by a capacitive ceramic measuring cell at the bottom.
                        The probe is equipped with a 1“ thread at the bottom. This thread allows to extend the probe by using a protective tube. The probe then is protected against mechanical damage and the cable within the tube is protected against chemical solvents.

                        The non-corrosive enclosure featuring protection IP68 permits universal use for reliable determination of levels in containers, basins, shafts and tanks. The large diaphragm has proven as very reliable, particularly in the wastewater sector.

                        NivuBar G II features ex approval II 1G Ex ia IIC/IIB T4 for Zone 0 as standard and can be installed in any explosive area.

                        Utilising the widely used 2-wire technology, the installation costs are very low.

                        Typical applications for G II
                        • Pump shafts
                        • Grease receiving stations
                        • Stormwater treatment plants, storage sewers, retention tanks and discharge constructions
                        • WWTPs (screening control, tank levels, sludge tanks, levels in open channels)
                        • Industrial applications
                        • and many more

                      • AquaBar II

                      • Submersible probe – piezo-resistive stainless steel measurement cell
                        Submersible probe with 4 - 20 mA transmitter for hydrostatic level measurement in clean to slightly polluted liquids. With piezo-resistive stainless steel measurement cell

                        • Stainless steel diaphragm
                        • Piezo-resistive pressure sensor
                        • for clean to slightly polluted liquids.
                        • 2-wire probe
                        • High accuracy
                        • Integrated overvoltage protection
                        • High electrical operating safety

                        The hydrostatic level probe features a diameter of only 27 mm and hence can be installed in tubes as used mainly for groundwater level measurement and deep well measurements.

                        The mechanically robust sensor body made of stainless steel (1.4571) and the separating diaphragm (1.4435) are held from the top on a self-supporting cable made of PUR.
                        The probe can be strained using a straining clamp.

                        The proven piezo-resistive measurement principle guarantees high long-term stability and operational reliability. Furthermore the reverse polarity protection, the short circuit resistance as well as an integrated overvoltage protection within the sensor body ensure high operating safety.

                        Utilising the widely used 2-wire technology, the installation costs are very low.

                        Typical applications for AquaBar II
                        • Deep wells
                        • Water levels
                        • Spring discharge
                        • Drinking water supply
                        • Raw water extraction
                        • Barrages
                        • River levels
                        • and many more

                      • AquaBar BS Submersible Probe

                      • Diameter 19 mm – ideal for deep wells
                        Submersible probe with 4 - 20 mA transmitter for hydrostatic level measurement. Suitable for measurements in deep wells through small diameter of only 19 mm. With piezo-resistive stainless steel measurement cell

                        • Diameter only 19 mm
                        • For use level tubes and protective tubes with diameters starting at 1“
                        • Stainless steel diaphragm
                        • Piezo-resistive pressure sensor
                        • 2-wire probe
                        • High accuracy
                        • Integrated overvoltage protection
                        • High electrical operating safety

                        Die hydrostatic level probe features a diameter of only 19 mm and hence can be installed in level tubes and protective tubes with very small inside diameters as used mainly for groundwater level measurement and deep well measurements.

                        The mechanically robust sensor body made of stainless steel (1.4571) and the separating diaphragm (1.4435) are held from the top on a self-supporting cable made of PUR.
                        The probe can be strained using a straining clamp.

                        The very small outside diameter of the probe 19 mm allows the use even in very small level tubes and protective tubes with diameters starting at 1“.
                        The probes can be manufactured upon customer request as well.

                        Typical applications for AquaBar BS
                        • Deep wells
                        • Water levels
                        • Spring discharge
                        • Drinking water supply
                        • Raw water extraction
                        • Barrages
                        • River levels
                        • and many more

                      • HydroBar G II

                      • Screw-in with capacitive ceramic measurement cell
                        Screw-in probe with internal 4 - 20 mA transmitter for hydrostatic level measurement in water, wastewater and gases. Oil-free capacitive ceramic measurement cell.

                        • Robust and reliable screw-in probe with 1.5“ threaded connection
                        • Capacitive ceramic measurement cell
                        • for slight to heavily polluted liquids, sludge and pasty media
                        • Large front-flush diaphragm
                        • 2-wire probe
                        • Ex Zone 0
                        • High overpressure resistance
                        • Integrated overvoltage protection

                        The hydrostatic level probe with G 1.5” thread has been developed to meet the high demands of industry and environmental protection.

                        The corrosion-proof encapsulation featuring IP68 protection rating allows to use the unit for reliable level detection in containers, tanks and pipelines. The large resistant ceramic diaphragm has proven particularly in the wastewater sector as well as in the chemical industry. Due to the front-flush diaphragm the unit can be used even in viscous media and pastes. Diaphragm failures are virtually eliminated.The HydroBar G II can be used in aggressive media such as acids and caustic solutions as well.

                        Typical applications for HydroBar G II
                        • Pump stations
                        • Pipelines
                        • Containers and tanks
                        • Digester outlets
                        • Industrial applications
                        • and many more

                      • UniBar E II

                      • Screw-in probe stainless steel measurement cell piezo-resistive
                        Screw-in probe with internal 4 - 20 mA transmitter for hydrostatic level measurement in water, wastewater and gases. With piezo-resistive stainless steel measurement cell.

                        • Robust and reliable screw-in probe with ½“ threaded connection
                        • Piezo-resistive measurement cell
                        • for gases as well as clean to slightly polluted liquids
                        • 2-wire probe
                        • Ex Zone 0
                        • High overpressure resistance
                        • Integrated overvoltage protection

                        The hydrostatic level probe with G ½“ thread has been developed to meet the high demands of industry and environmental protection.

                        The corrosion-proof encapsulation featuring IP68 protection rating allows to use the unit for reliable level detection in containers and tanks
                        The probes are particularly suitable for pressure investigation in closed systems and pipelines.
                        Due to the use of piezo-resistive measurement cells made of stainless steel (1.4404) the UniBar E II has proven very well for use under extremem conditions in aggressive media such as acids and caustic solutions..

                        Typical applications for UniBar E II
                        • Pump stations
                        • Pipelines
                        • Containers and tanks
                        • Digester outlets
                        • Industrial applications
                        • and many more

                      • NivuCont Plus

                      • Multifunctional process measurement transmitter
                        Multifunctional process measurement transmitter with graphic display – menus in dialog mode, Ex-enabled 2/3-wire sensor supply. For hydrostatic level measurement with integrated pump management.

                        • Extremely robust stainless steel enclosure, IP68
                        • Graphic display 128 x 64 Pixel
                        • Comfortable operation using 6 soft keys
                        • 19"-version, field enclosure and panel mount
                        • Two-channel version, 2 transmitters in one unit
                        • Pump management
                        • Volume calculation
                        • Trend as well as comparative measurement
                        • Linearisation
                        • Control of tank purification devices

                        Due to steadily increasing requirements on automation and surveillance systems a variety of measurement values are needed. These are delivered by various sensors. The NivuCont Plus here provides the best possible solution.
                        The unit powers two and three wire sensors and accepts their input. The intrinsically safe sensor power supply for use in Ex zone 0 areas is optionally available.

                        The current inputs are monitored permanently (Live-Zero) and in case of interruption an error message is generated.

                        Typical applications for NivuCont Plus
                        • Pump shafts
                        • Tank and container measurements
                        • Measurement and control of various levels
                        • Volume calculation on measurement and discharge weirs, movable weir flaps, Venturi and similar
                        • Pressure measurement and control
                        • Industrial facilities
                        • and many more

                      • NivuCont S

                      • Process measurement transmitter with DIN rail enclosure
                        Multifunctional process measurement transmitter with LED display for Ex- enabled 2/3-wire sensor supply. For hydrostatic level measurement.

                        • DIN rail and panel mount enclosure
                        • Ex approval Zone 1
                        • Easy-to-read LED display
                        • 3 relays
                        • Pump exchange function
                        • The unit has all the qualities a powerful process measurement transmitter should have today.

                        There are two free programmable relays available for limit values with hysteresis for min-, max- as well as for pump exchange action. One more error report relay and a scalable galvanically isolated 0/4 - 20 mA output can be used for control purposes and for measurement value evaluation.

                        Typical applications for NivuCont S
                        • Pump shafts
                        • Tank and container measurements
                        • Measurement and control of various levels
                        • Volume calculation on measurement and discharge weirs, movable weir flaps, Venturi and similar
                        • Pressure measurement and control
                        • Industrial facilities
                        • and many more

                    • Data Logging & Data Evaluation

                    • NIVUS provide measurement data transmission suitable for matched systems in the water industry featuring corresponding special functions. Telecontrol systems can be used to control complex plants and facilities.

                        • Transmission and Telecontrol Systems

                        • GPRS data loggers and sensors are components of the transmission and telecontrol systems and are used for efficient remote monitoring of measurement sites. We guarantee best possible and stable data transmission thanks to using the most powerful available network.

                            • NivuLog Easy Data Logger

                            • Multifunctional data memory incl. GPRS modem
                              GPRS data logger for independent measurements, storage of measurement data and automatic data transmission

                              • Automatic data storage and data transmission via GPRS
                              • Sensor power supply with 2 switchable supply voltages
                              • Configuration via web portal
                              • 非常损失w expenses for commissioning & operation
                              • Built-in long-life SIM chip
                              • Compact construction
                              • 4 universal inputs for digital and analog signals

                              NivuLog Easy is a compact, free programmable unit for recording, processing and transmission of measurement signals. Data from analogor digital sensors and transducers canbe recorded through the universal inputs.

                              The unit is completely powered either by an internal rechargeable battery or external AC/DC power supply. The power source inputs are monitored continuously and alarms are generated accordingly in the event of failure.

                              If powered from an external DC power source an internal rechargeable battery can be used as buffer.

                              Measurement data are provided via´an online data portal. This makes sure to have data available at anytime in any place.

                              Typical NivuLog Easy applications
                              • Level monitoring
                              • Level measurement in stormwater tanks
                              • Rain gauge
                              • Silo plant monitoring
                              • and much more

                            • NivuLog Easy SUN Data Logger

                            • Solar-powered data memory incl. GPRS modem
                              Stable solar enclosure with robust construction. Highly flexible signal processing. Provides sensor power supply and reliable data transmission independent from mains power.

                              • Robust IP68 enclosure, compact construction
                              • Solar panel protected with armoured glass
                              • Direct Sensor connection using encapsulated terminal housing
                              • Switchable sensor power supply
                              • Reliable data connection
                              • Rechargeable buffer battery to bridge months with low sunlight
                              • Unlimited access to your measurement data via Internet
                              • Stable and cost-efficient data transmission
                              • Existing settings are accepted automatically on replacement units
                              • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                              • Free adjustable measurement and transmission cycles
                              • Real-time synchronisation via server
                              • 非常损失w start-up and operating costs

                              NivuLog Easy SUN is a fully equipped data transmission unit in a stable solar pane enclosure. Protected by armoured glass, the built-in rechargeable battery is charged using a photovoltaic system to provide power supply even during months with low sunlight. The switchable sensor power supply allows to directly supply sensors. No additional clamping connection boxes are required since the connections are made within the panel. Reliable and cost-efficient data transmission independent from certain providers is ensured thanks to the integrated SIM module. The required data volumes can be included easily in the project costs right from the start. It is not necessary to search for appropriate providers and contracts do not need to be managed. This saves time and costs.

                              Typical NivuLog Easy SUN applications
                              • Level monitoring
                              • Level measurement on stormwater tanks
                              • Rain gauge
                              • silo system monitoring
                              • and many more

                            • NivuLog 4 Data Logger

                            • Robust GPRS data logger with data memory
                              Data logger with protective cover and integrated quad band modem. Allows sensor power supply and reliable, power-independent data transmission on centralised data server.

                              • Robust IP67 enclosure with chemical resistant protective cover
                              • Switchable sensor power supply
                              • Large internal readings memory
                              • Stable, reliable and cost-efficient data transmission
                              • Extremely long battery life of up to 5 years
                              • Unlimited access to your measurement data via Internet
                              • Existing settings are accepted automatically on replacement units
                              • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                              • Free adjustable measurement and transmission cycles
                              • Real-time synchronisation via server
                              • 非常损失w start-up and operating costs

                              Thanks to four free configurable multifunctional inputs as well as the robust and chemical resistant rubber protection the NivuLog 4 is the ideal transmission unit particularly for environments with a high degree of pollution. The switchable sensor power supply guarantees the parallel supply of multiple sensors. The sensors are connected using a MIL plug connection to ensure IP 67 protection.

                              The integrated SIM module allows provider-independent, cost-efficient and reliable data transmission. It is not necessary to search for appropriate providers and contracts do not need to be managed. This saves time and costs.

                              Typical NivuLog 4 applications
                              • Level monitoring
                              • Level measurement on stormwater tanks
                              • Limit level monitoring
                              • Volume calculation
                              • Etc.

                            • NivuLog 2 Ex N Data Logger

                            • Robust Ex data logger with data memory
                              GPRS data logger with protective cover for Ex zone 1. Allows sensor power supply and reliable, power-independent data transmission on centralised data server.

                              • For use in Ex-Zone 1
                              • Robust IP67 enclosure with chemical resistant protective cover
                              • Switchable sensor power supply
                              • Large internal readings memory
                              • Stable, reliable and cost-efficient data transmission
                              • Extremely long battery life of up to 5 years
                              • Unlimited access to your measurement data via Internet
                              • Existing settings are accepted automatically on replacement units
                              • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                              • Free adjustable measurement and transmission cycles
                              • Real-time synchronisation via server
                              • 非常损失w start-up and operating costs

                              GPRS data logger NivuLog 2 Ex N allows to set up self-sufficient and mains power-independent measurement systems with sensors and data transmission via GPRS in explosive areas. The 2 available universal inputs can be configured freely. The switchable sensor power supply allows to operate Ex sensors. The rechargeable high-performance battery provides a lifetime of up to 5 years. The integrated SIM module of this GPRS data logger allows provider-independent, cost-efficient and reliable data transmission. It is not necessary to search for appropriate providers and contracts do not need to be managed. This saves time and costs. The NIVUS data transmission solution provides all from one source, providing tailored data packages for your application. This allows to consider and to include all costs right from the start. The data packages are designed for a period of use of up to 5 years. Of course we also provide tailored solutions to fit your needs. Just talk to us.

                              Typical Application for NivuLog 2 Ex N
                              • Use in Ex zone 1
                              • Level measurement on stormwater tanks
                              • Limit level monitoring
                              • Volume calculation
                              • Etc.

                            • NivuLog PCM Data Logger

                            • Robust data logger for connection to PCM
                              Data logger particularly as extension to PCM flowmeters. Reads out all channels of the PCM and provides a reliable data connection via GPRS.

                              • Transmission of measurements and analytics channels from PCM
                              • Use in Ex zone 1 (NivuLog PCM Ex only)
                              • Robust IP67 enclosure with chemical resistant protective cover
                              • Switchable sensor power supply
                              • Large internal readings memory
                              • Stable, reliable and cost-efficient data transmission
                              • Extremely long battery life of up to 5 years
                              • Unlimited access to your measurement data via Internet
                              • Existing settings are accepted automatically on replacement units
                              • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                              • Free adjustable measurement and transmission cycles
                              • Real-time synchronisation via server
                              • 非常损失w start-up and operating costs

                              The NivuLog PCM has been developed particularly for communication with the portable flow measurement device PCM. Thanks to the direct connection it is possible to transmit all measuring channels from the PCM to the Device to Web (D2W) data portal for further processing.

                              The integrated SIM module allows provider-independent, cost-efficient and reliable data transmission. It is not necessary to search for appropriate providers and contracts do not need to be managed. This saves time and costs.

                              Typical Application forNivuLog PCM
                              • Connection to PCM
                              • Measurements in Ex areas ( NivuLog PCM Ex only)
                              • Flow monitoring
                              • Limit level alarms
                              • Monitoring of the PCM battery
                              • Optimisation of maintenance cycles
                              • Etc.

                            • NivuLog Nano Data Logger

                            • Battery-powered Data logger for digital Signals or 4-20 mA sensors
                              Energy-saving GPRS data memory featuring IP68 protection and a wide range of applications in the field of level monitoring and the detection of digital signals.

                              • Compact construction with internal battery compartment
                              • Reliable data connection
                              • Extreme long rechargeable battery life of up to 5 years
                              • Unlimited access to measurement data via Internet
                              • Stable and cost-efficient transmission of data
                              • Automatic takeover of available settings when replacing devices
                              • Comprehensive options such as remote setting of parameters, alerting, limit value monitoring and calculation via D2W - Device to Web Internet portal
                              • 4 - 20毫安传感器提供可选的
                              • Real-time synchronisation via server
                              • 非常损失w costs for commissioning and operation

                              NivuLog Nano is perfectly suited for measurement and transmission of digital and analog measurement values. Apart from measuring internal values such as GSM signal strength and battery voltage, NivuLog Nano provides a variety of external measurement functions. Level monitoring, pressure measurement and impulse counting can be very easily realised using this data logger. All that is left to do is to connect the application-specific transducer before measurement and data transmission are ready to go.
                              内置的SIM卡芯片允许provider-independent,cost-efficient and reliable data transmission. This eliminates the need for comprehensive administrative processes such as searching suitable service providers and appropriate data tariffs as well as concluding and maintaining the necessary contracts..

                              Typical Applications for NivuLog Nano
                              • Level monitoring
                              • Level measurement on stormwater tanks
                              • Monitoring of silo plants
                              • Impulse counter
                              • and many more

                            • NivuLog Nano AMR Data Logger

                            • Data memory for remote meter readout via GPRS
                              Special data logger for remote readout of water and energy meters. By using the appropriate smartphone app it is possible to monitor meters from anywhere.

                              • Parallel data handling of up to 4 meters
                              • Compact construction with internal battery compartment
                              • Configuration via smartphone app
                              • Reliable data connection
                              • Extremely long battery life of up to 5 years
                              • Unlimited access to your measurement data via Internet
                              • Stable and cost-efficient data transmission
                              • Existing settings are accepted automatically on replacement units
                              • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                              • Real-time synchronisation via server
                              • 非常损失w start-up and operating costs

                              The NivuLog Nano AMR is a compact transmission unit for direct connection to meters with four free configurable digital inputs. The complete meter application is synchronised in real time via the Device2Web server system. The integrated SIM-Chip ensures very simple operation and long-term use.

                              The NIVUS data transmission solution provides all from one source, providing tailored data packages for your application. This allows to consider and to include all costs right from the start. The data packages are designed for a period of use of up to 5 years. Of course we also provide tailored solutions to fit your needs.

                              Typical NivuLog Nano AMR applications
                              • Water meters
                              • Energy meters
                              • Remote meter readout
                              • Etc.

                            • Level Data Collector

                            • Level measurement with remote data transmission via GPRS
                              地下水水位数据记录器量水平urement and GPRS data transmission in level pipes starting at 2“. System life up to 10 years.

                              • Extremely robust stainless steel enclosure, IP68
                              • Data transmission via GPRS
                              • Automatic log-on with the most powerful service network without additional costs
                              • Extra-long lifetimes (typical 10 years) through MicroPower® technology
                              • Connection clamps for 2-wire system such as pressure probes

                              General description
                              Robust measurement system, consisting of transmitter and level probe, for data transmission to the server-based Internet portal "D2W" (Device to Web) via GPRS.
                              The water level data logger measuring and data recording system is for detection of analog readings from connected 2-wire sensors such as pressure probes. The measurement system operates independent from mains power. Sensor and radio transmission system are powered by high-performance Lithium batteries featuring a very long lifetime (approx. 10 years typical). Detected readings are saved on flash memory and will be transmitted to the server-based Device to Web (D2W) Internet portal via GPRS using the built-in quad band modem.

                              Typical level data collector applications
                              • Groundwater level measurement
                              • Landfill level monitoring
                              • Raw water level for waterworks
                              • Levels in conservation areas and similar

                            • NivuLog SunFlow Flow Meter

                            • Solar-powered for full and partial filling
                              Self-sufficient measurement station with integrated data transmission via GPRS. For discontinuous flow measurement in slight to heavily polluted media

                              • Solar-powered flow measurement station independent from mains power
                              • Extremely robust and compact IP68 enclosure
                              • Solar panel protected by armoured glass
                              • Integrated rechargeable buffer battery and charging control
                              • Direct connection of sensors using encapsulated terminal housing
                              • Adjustable measurement and transmission cycles
                              • Storing, processing, indication and calculation of measurement data using D2W – Internet portal Device to Web

                              The NivuLog SunFlow is a self-sufficient, solar-powered flow measurement station independent from mains power with integrated GPRS data transmission. The discontinuous flow measurement is suited for slight to heavy polluted media in open channels, flumes as well as in part filled and full pipes.

                              The NivuLog SunFlow is designed for flow measurement, storage and transmission of data in locations without mains power supply. The very robust aluminium cast enclosure with IP68 protection is covered with armoured glass and contains all necessary components such as data logger, modem, charging control and rechargeable batteries. Thanks to the compact construction it is perfectly suited for use in free and rough terrain. A Doppler flow velocity sensor type KDS with optional integrated level measurement is connected directly to the system.

                              Typical NivuLog SunFlow applications
                              Flow measurement in stormwater tanks, channel networks, irrigation channels, mine water cleaning plants, natural streams etc.

                          • Software Solutions

                              • Measurement data management D2W – Device to Web

                              • Web portal for measurement data recording/data management
                                Measurement data management D2W is a comprehensive system to store measurement data transmitted from data loggers. It includes many functions for measurement data analytics.

                                • Worldwide access to measurement data via WWW
                                • Most relevant system parameters at one sight
                                • Graphs and table views
                                • Alarms
                                • No software installation required

                                Measurement data management D2W
                                NIVUS provide a unique complete solution consisting of highly accurate portable or fixed measurement systems and innovative software solutions.

                                The interfaces of the single components are perfectly matched to one another and serve as tools for efficient data recording, data transmission and data evaluation up to logging and the documentation of the measurement data.

                                The measurement data management D2W - Device to Web software receives readings and system data transmitted via GPRS from the NIVUS device family and saves the data on secure NIVUS data servers. System backups and redundant systems guarantee virtually 100 % data availability.

                                The “D2W - Device to Web“ data portal can be easily accessed via Internet without the need to install additional software. In password-protected areas there are many options available for the direct visualisation of measurement data, function tests and data forwarding through alarm functions via SMS or e-mail.

                                Permanent data access allows to directly react in case of malfunctions, to avoid damage in the event of errors or to monitor the function of special constructions.

                                Expenses can be reduced significantly by minimizing measurement periods, avoiding unnecessary travel costs and maintenance costs such as road-safety, emergency tripod and sewer aeration.

                              • NivuSoft

                              • Measurement data processing in the wastewater industry
                                软件功能调整the wastewater industry. Functions: documentation of measurement places, graphs and table views, creation of statistics/reports etc.

                                NivuSoft is software with precisely adjusted functions for processing of measurement data in the water industry.

                                It is possible to e.g. indicate multiple hydrographs from different measurement places in one common graph. This allows to quickly monitor the discharge behaviour within the channel network and is an effective tool to verify plausibility.

                                Modifications, zoom settings or special views in synchronised graphs, tables or statistics are indicated in all components simultaneously.

                                NivuSoft provides all common calculating functions required to analyse measurement data as known from hydraulics and fluid mechanics.

                                NivuSoft provides versatile options from the documentation of measurement places through indication of readings as tables and graphs to special reports such as evaluation of extraneous water.

                                The software operates local and communicates with the „D2W - Device to Web“ online data portal in order to directly receive and to further process saved rea-dings.

                                Appealing design, clear control elements as well as drag & drop functions ensure intuitive operation.

                            • Water Quality & Analysis

                                • H2S Measurement

                                    • NivuLog H2S Bluetooth / GSM

                                    • H2S measurement with wireless data transmission
                                      Compact, robust and portable measurement unit with data memory for detection of H2S concentration in channel networks.

                                      • Data transmission via Bluetooth or GPRS/UMTS
                                      • Data management local or via D2W Internet portal
                                      • Sensor replacement directly on site
                                      • Read out and transmit data to D2W server via smartphone app
                                      • Built-in long-life SIM chip
                                      • Battery life up to 5 years
                                      • Robust, rubber-coated enclosure with high chemical resistance
                                      • ATEX certified

                                      硫化氢(H2S)产生的结果来m the degradation of biomass. Far flowing distances, long flowing times as well as saving water at constant pollution loads cause the loads to start decomposition even within the channel.

                                      This in turn leads to heavy corrosion of concrete channel constructions and, in combination with water, destroys the channel constructions in the long run. To avoid damaged channels it makes sense to investigate the hydrogen sulfide concentration, which allows to take the appropriate corrective measures.

                                      Typical NivuLog H2S Bluetooth/GSM applications
                                      • Wastewater treatment plants
                                      • Industries
                                      • Public Water and sewage systems

                                    • NivuLog H2S Ex

                                    • H2S measurement with GPRS transmission
                                      Compact, robust and portable measurement unit with data memory for detection of H2S concentration in channel networks. GPRS data readout and transmission to D2W online data portal. Ex zone 1 approval.

                                      • Use in Ex zone 1
                                      • Robust IP66 enclosure with chemical resistant protection cover
                                      • Large internal readings memory
                                      • Stable, reliable and cost-efficient data transmission
                                      • Unlimited access to your measurement data via Internet
                                      • Existing settings are accepted automatically on replacement units
                                      • Comprehensive options such as remote setting of parameters, alarms, limit level monitoring and calculations using the D2W - Device to Web Internet portal
                                      • Free adjustable measurement and transmission cycles
                                      • Real-time synchronisation via server
                                      • 非常损失w start-up and operating costs

                                      NivuLog H2S Ex allows self-sufficient and mains power-independent measurement and transmission of hydrogen sulphide contents in ambient air in explosive areas.

                                      The integrated SIM module allows provider-independent and cost-efficient data transmission to the Device2Web online data management system.

                                      Typical NivuLog H2S Ex applications
                                      Measurement of H2S concentration in ambient air:
                                      • Channel systems
                                      • Industry
                                      • Municipal water and wastewater plants

                                  • Interface Measurement

                                    • Channel Networks

                                    • Flow measurement, level measurement, precipitation measurement as well as overflow and discharge measurements in channel networks

                                        • Fix Installation Measurements

                                        • Flow measurements in channels, flow measurements under difficult conditions and precipitation measurement with data transmission via GPRS

                                            • Channel Dry Weather Flume

                                            • Application
                                              • Segmented rectangular channel, 3 m width, made of concrete
                                              • Part filled
                                              • Channel with dry weather flume and side space

                                              Definition of tasks
                                              Accurate detection of dry weather discharge and combined water discharge

                                              Solution
                                              • A measurement system Type OCM Pro has been used.
                                              • To detect low volumes, the first sensor has been installed in the dry weather flume. Sensors 2 and 3 have been installed left and right of the dry weather flume on the side step. In combination with sensor 1 they detect flow velocities at higher levels or the discharge of combined water.

                                              Advantages
                                              • Quick and easy programming due to pre-set channel shapes.
                                              • Utilisation of 2 analog outputs using appropriate scales for dry weather and rainy weather and hence high resolution of readings.

                                            • No Shutting Down the Flow

                                            • Application
                                              • The need to replace the existing Time of Flight without shutting down the flow.
                                              • 4m deep channel
                                              • Application required to be installed in just 1 day

                                              Definition of tasks
                                              To be able to measure Flow without shutting down the works.

                                              Solution
                                              • A measurement system Type OCM Pro has been used.
                                              • Rather than mounting the Sensor on the floor of the channel we used a Catamaran boat system and mounted the sensor to look top down into the channel.

                                              Advantages
                                              • No disruption to the works.
                                              • No need to shut down the flow.
                                              • Complete NIVUS system was installed within one day.

                                            • Flow Measurement In Pipe That Could Not Be Shut Down

                                            • Application
                                              • To supply high accuracy flow meter on a new works application, cost was an issue and maintaining a Mag meter was another issue.

                                              Definition of tasks
                                              The task was to find savings by not installing a Mag meter in a chamber size of 4.5 m x 4.2 m as the cost was circa 120k due to the flowmeter size and size of chamber.

                                              Solution
                                              • A measurement system Type OCM Pro has been used.
                                              • We were able to install the NIVUS Pipe sensor without shutting down the flow using live under pressure tapping.

                                              Advantages
                                              • Cost saving on project was 108k.
                                              • No need to shut down the flow.
                                              • Complete NIVUS system can be installed in half a day and very easy to maintain

                                          • Pump Stations and Lifting Facilities

                                          • 在泵沙流量测量和水平测量fts, pressure vessel pump stations and for spiral conveyor control

                                              • Flow Measurement Pumps

                                              • Application
                                                • Well diameter 1.8 m
                                                • Depth of well 6.5 m
                                                • Two wet installed pumps
                                                • Pressure pipe installed in the centre

                                                Definition of tasks
                                                • Pump control in alternate duty assist mode
                                                • Switching points at levels of 2 m and 4 m
                                                • Maximum level report
                                                • Dry run protection
                                                • Transmission of levels to control system
                                                • Flow Measurement in pump well
                                                • Schematic diagram of two pumps in alternate duty assist mode

                                                Solution
                                                • An ultrasonic measurement Type NivuMaster Ultra has been used.
                                                • The implemented variable pump mode provides a great number of options such as the alternate duty assist mode desired by customer.
                                                • Obstacles on the sides of the sonic lobe such as ladders, steps, cables, pipes, pumps and other constructions can be covered using the built-in agitator avoidance.

                                                Advantages
                                                • Non-contacting
                                                • Measuring and controlling in one unit

                                              • Spiral Pump Control

                                              • Application
                                                • Wastewater lifting facility with three spiral conveyors.
                                                • Delivery head approx. 9.00 m

                                                Definition of tasks
                                                • Non-contact level measurement for alternating control of spiral conveyors
                                                • Redundant
                                                • Panel mount enclosure unit
                                                • Level Measurement in Spiral Pump Control
                                                • Schematic diagram of a wastewater lifting facility

                                                Solution
                                                • 超声波测量发射机NivuMas类型ter Ultra 5 panel mount enclosure has been installed as non-contact measurement. This unit not only serves as alternating control for the spiral conveyors, but also supplies min./max. messages
                                                • The redundant measurement is engaged using an error message contact.

                                                Advantages
                                                • Sensor installation and transmitter programming carried out by operator
                                                • Therefore independent of PLC programming through third party

                                              • Flow Measurement Pumps

                                              • Application
                                                • Pipe diameter 0.15 m, made of steel
                                                • Full pipe
                                                • Wet pumps

                                                Definition of tasks
                                                • Determination of efficiency and alert when reaching the wear limit
                                                • Quick and cost-efficient upgrade of a wastewater pump station with a flow measurement
                                                • Measurement insensitive to grease and films
                                                • Existing pumping line should remain in place if possible
                                                • Flow measurement for pump efficiency
                                                • Sensor mounting principle

                                                Solution
                                                • The flow measurement system Type NFP has been used.
                                                • Verifies the operating point of the pump, the degree of wear and clogging can be detected.
                                                • The existing riser has been complemented merely by an additional nozzle and a hole has been drilled.

                                                Advantages
                                                • 简单,简单,快速升级在2hours.
                                                • High accuracy and reliability.
                                                • Measurement without electrodes and independent of conductivity.

                                              • Pressure Vessel Pump Station

                                              • Application
                                                • Pipe diameter 0.1 m, made of cast iron
                                                • Full filled

                                                Definition of tasks
                                                • Quick and cost-efficient upgrade of a pressure vessel pump station with a flow measurement
                                                • Measurement insensitive to grease and films
                                                • Measurement installation in an existing cast iron pipeline without the need to de-install or to replace the pump line
                                                • Flow Measurement Pressure Vessel Pump Station
                                                • Installed sensor with tapping saddle

                                                Solution
                                                • The flow measurement system Type NFP has been used.
                                                • The existing riser has been equipped with an additional hole and a tapping saddle with sensor nozzle has been fastened.

                                                Advantages
                                                • Easy, straightforward and quick upgrading within 60 minutes
                                                • Significantly reduced installation costs since existing pipeline does not need to be replaced
                                                • Drift-free and accurate measurement without electrodes independent of conductivity

                                            • Stormwater Treatment Facilities

                                            • Detection of discharge volumes partially with GPRS monitoring, discharge measurement and throttle monitoring in stormwater treatment facilities and systems.

                                              We are manufacturer of reliable excess water measurement systems and discharge measurements on rain overflow basins. Among the functions for rain overflow tanks are discharge measurement and excess water rate detection with automatic and wireless data transmission via GPRS. Reliable measurement data are available even without power supply: self-sufficient measurement systems operated with standard or rechargeable batteries provide a consistent flow of data. NIVUS moreover provide flow measurements for relief of rain overflow tanks, stormwater retention basins and stormwater treatment plants.

                                                • measurement and transmission

                                                • Application
                                                  • Closed stormwater overflow in channel network
                                                  • Manhole entry in the middle of a road, difficult accessibility conditions
                                                  • Ex zone 1
                                                  • No mains power supply available

                                                  Definition of tasks
                                                  • Investigation of discharge volume using level measurement and calculation according to Poleni
                                                  • Extended constructional measures such as connection to public electricity supply shall be avoided
                                                  • Data transmission via GPRS out of the closed manhole shaft
                                                  • Long system lifetime
                                                  • Discharge measurement and GPRS transmission
                                                  • Discharge measurement and GPRS transmission

                                                  Solution
                                                  • By using the battery-powered GPRS data logger Type NivuLog 2 Ex extensive building operations were not necessary. Thanks to IP 67 protection it was possible to install the logger directly in the manhole shaft of the building.
                                                  • The discharge sill has been equipeed with a level measurement which is directly supplied by the data logger.
                                                  • The discharge volume is calculated in the "Device to Web" (D2W) online portal utilising a saved breakpoint chart.
                                                  • The automatically transmitted readings are password-protected and can be viewed as tables or graphs from any workplace featuring Internet access.

                                                • Overflow Measurement

                                                • Application
                                                  • Stormwater overflow tank with cover
                                                  • Maximum overflow head 0.35 m
                                                  • 非常损失w distance between weir crest and ceiling (0.50 m)

                                                  Definition of tasks
                                                  • Detection of impoundage (beginning and end)
                                                  • Output of tank overflow (beginning, end and overflow volume)
                                                  • Reliable non-contact measuring at lowest distance between ceiling and maximum water level
                                                  • Discharge Measurement without Space in a closed stormwater overflow tank
                                                  • Schematic Diagram

                                                  Solution
                                                  • 超声波测量发射机NivuMas类型ter LF-5:2 has been installed. Thanks to comprehensive programming options and numerous outputs it is possible to calculate and to output the parameters "Tank Impoundage“, "Tank Overflow“ and the overflow volume (as requested by German DWA organisation) by using only one unit.
                                                  • Using an innovative tilted mirror allows to install the ultrasonic sensor close to the maximum water surface level.

                                                  Advantages
                                                  • Saves time and costs since only one device is required

                                                • Intelligent Tank Cleaning Control

                                                • Application
                                                  • Open stormwater overflow tank
                                                  • Depth 4,0 m
                                                  • Water jets as cleaning instruments

                                                  Definition of tasks
                                                  • Detection of tank filling level using a hang-in pressure probe
                                                  • Up to 5 cleaning devices (jet cleaners) shall be controlled
                                                  • Due to limited space available in the existing switching cabinet the tank cleaning control shall be implemented by using one single transmitter
                                                  • Tank Cleaning Control Using only 1 Relay
                                                  • Schematic diagram of tank cleaning control

                                                  Solution
                                                  • The level measurement has been implemented using a transmitter Type NivuCont Plus in connection with a 2-wire pressure probe NivuBar Plus.
                                                  • The NivuCont controls the cleaning instruments depending on level and trend as well as within certain cycles.

                                                  Advantages
                                                  • Cost-efficient tank cleaning using one relay output
                                                  • No PLC required – comprehensive PLC programming through third parties was not necessary

                                                • GPRS in Customer Network

                                                • Application
                                                  • Open stormwater overflow tank
                                                  • No power supply available
                                                  • No telephone connection or data lines in close proximity

                                                  Definition of tasks
                                                  • Network-independent tank level monitoring
                                                  • Transmission of readings, status information and error message to existing process conducting system
                                                  • Utilisation of customer-supplied Virtual Private Network (VPN) for data transmissionNutzung des kundeneigenen Virtual Private Network (VPN) zur Übertragung der Daten
                                                  • GPRS Data Transmission In Customer Network
                                                  • Principle of data transmission

                                                  Solution
                                                  • The tank level is investigated using an ultrasonic compact echo sounder Type NivuCompact. Its extremely low startup time of only 3 seconds and the resulting extremely low power consumption allow very long lifetimes.
                                                  • For detection and transmission of readings an independent battery-powered GPRS data logger Type NivuLog Easy has been used.
                                                  • The readings are transmitted from the GPRS data logger via the VPN to the customer‘s D2W server. This server then transmits the current data via OPC interface to the existing process conducting system (WinCC).

                                                • Discharge Control of Stormwater Overflow Tank

                                                • Application
                                                  • Pipe diameter 0.3 m, made of galvanised steel
                                                  • Part filled
                                                  • Low filling levels during night times

                                                  Definition of tasks
                                                  • Continuous measurement and flow rate control on a stormwater overflow tank
                                                  • 低夜间检测说charges
                                                  • Not more than one additional unit can be installed due to few space available in the switching cabinet
                                                  • Discharge Measurement and Discharge Control on Stormwater Overflow Tank
                                                  • Schematic diagram of a pipe measuring section with slide valve control

                                                  Solution
                                                  • A flow measurement using the Doppler method Type OCM FR with tube-shaped
                                                  • flow velocity sensor has been used.
                                                  • In order to measure even lowest levels an ultrasonic measurement from the pipe top down (Type NivuCompact) has been selected.

                                                  Advantages
                                                  • No need to install an additional controller in the switching cabinet due to transmitter-integrated 3-step controller with surge detection
                                                  • The sensor placement allows flow measurement from zero to maximum

                                                • Throttle Monitoring via GPRS

                                                • Application
                                                  • Stormwater overflow tank with discharge control using mechanic throttle equipment
                                                  • Throttle volume: 185 l/s
                                                  • No power supply available

                                                  Definition of tasks
                                                  • Continuous measurement and flow rate control on a stormwater overflow tank
                                                  • 低夜间检测说charges
                                                  • Not more than one additional unit can be installed due to few space available in the switching cabinet
                                                  • Throttle Monitoring with Transmission of Data and Alarms via GPRS
                                                  • Principle of measurement and data transmission

                                                  Solution
                                                  • A battery-powered GPRS data logger Type NivuLog Easy has been used.
                                                  • Data from an existing level probe are logged additionally in order to detect the tank level .
                                                  • Ultrasonic echo sounders Type NivuCompact have been used at the throttle discharge as well as on the discharge edge. The echo sounders are directly powered by the data logger.
                                                  • Throttle discharge as well as discharge volumes are calculated using a setpoint table stored in the "Device to Web" (D2W) online portal
                                                  • 警报触发停止使用一个指令列表red in D2W as soon as the pre-set alarm requirements have been fullfilled

                                                • Discharge Measurement

                                                • Application
                                                  • Rectangular channel, 6 m width
                                                  • Part filled
                                                  • Simultaneous overflow from several chambers into one common channel
                                                  • Short calming section upstream of measuring point

                                                  Definition of tasks
                                                  • Detection of overflow volumes to recipient
                                                  • Readings shall be transmitted to control system via analog and digital outputs
                                                  • High accuracy at varying overflow volumes per chamber
                                                  • Flow Measurement Overflow Multi-Chamber Stormwater Overflow Tank
                                                  • Installation principle

                                                  Solution
                                                  • Providing highest measuring dynamics and accuracy, a cross-correlation-based system Type OCM Pro has been used. By using 3 flow velocity sensors simultaneously it is possible to detect and to consider existing asymmetric flow conditions.
                                                  • The sensors have been installed on the channel bottom. Protective metal sheets prevent the sensors from being damaged.

                                                  Advantages
                                                  • Low installation costs
                                                  • Complies with requested accuracies by utilising 3 velocity sensors
                                                  • Maintenance-free

                                                • Collection of Overflow Volume

                                                • Application
                                                  • Stormwater basin with overflow sill constructed as trough
                                                  • Overflow edge constructed as toothed sill
                                                  • No backwater from recipient
                                                  • Overflow into trough from both sides
                                                  • Total length of sill: 24 m

                                                  Definition of tasks
                                                  • Detection of overfall volume
                                                  • Creation of Q/H-characteristics for toothed sill according to DIN 19 558
                                                  • Forwarding of detected flow volumes to a process control system
                                                  • Compliance with accuracies required according to DWA
                                                  • Overflow Volume on Trough
                                                  • Schematic diagram

                                                  Solution
                                                  • For this application 2 ultrasonic level meters Type NivuMaster with 2 sensors each have been used for average value measurement .
                                                  • Average values coming from the sensors (combination of 2 sensors left and right of overflow trough) are routed to an universal transmitter (NivuCont). This unit converts the average values into volumes (Q/H-characteristic), summing the values subsequently up as overflow total
                                                  • The total volume output is sent to the process control system (PCS) as analog signal

                                              • Seepage Water

                                              • Flow measurement in landfill leachate for sewage master plan

                                                    • Dump Seepage Water

                                                    • Application
                                                      • Pipe DN 200 made of HDPE
                                                      • Partially filled
                                                      • Maximum discharge flow rate 1.5 l/s
                                                      • Risk of formation of mineral deposity

                                                      Definition of tasks
                                                      • Detection of deposits from a groundwater well within a landfill site area for water balance detection
                                                      • Accurate, long-term stable and low-maintenance measurement
                                                      • Measurement shall be installed without major reconstruction measures in the proximity of an existing collector
                                                      • Flow Measurement Dump Seepage Water
                                                      • Measurement on V weir

                                                      Solution
                                                      • Due to low flow volumes it was necessary to use weir measurement according to Thomson (V weir).
                                                      • The non-contact ultrasonic measurement system Type NivuMaster is used to detect overflow height.
                                                      • Collector trough and weir opening have been constructed to obtain the best possible accuracy

                                                      Advantages
                                                      • Maintenance shall be reduced to regular visual inspections and occasional removal of incrustation building up.
                                                      • Easy adaption to possible higher flow rates through exchangeable weir plates featuring greater angles.

                                                • Portable Measurements

                                                • Temporary flow measurements for investigation of infiltration (extraneous water), efficiency or even under difficult hydraulic conditions

                                                    • Capacity Utilisation Measurement

                                                    • Application
                                                      • Concrete pipe DN 1200
                                                      • Part filled
                                                      • Levels temporarily tending to zero
                                                      • No power supply available
                                                      • Ex Zone 1

                                                      Definition of tasks
                                                      • Temporary Installation of a flow measurement system to investigate precipitation discharge and
                                                      • channel capacity utilisation
                                                      • Reliable detection of lowest levels during the night
                                                      • Automatic data transmission and error messages/remote maintenance via GPRS
                                                      • Capacity Utilisation Measurement and Ex-proof Data Transmission via GPRS
                                                      • Installation principle

                                                      Solution
                                                      • The portable flow measurement system PCM Pro with an Ex-proof GPRS data logger Type NivuLog Ex have been used.
                                                      • The built-in pressure measurement cell of the flow velocity sensor allows to detect the channel overflow.
                                                      • Using an additional air-ultrasonic sensor (LUS) ensures reliable measuring of even lowest discharge during the night.
                                                      • Highly efficient data compression as well as the particular transmission behaviour guarantee reliable data transmission despite massive channel walls and metal manhole covers.
                                                      • The NIVUS "Device to Web" data portal allows direct access to the measurement system as well as to the connected sensors.

                                                    • Infiltration Water

                                                    • Application
                                                      • Pipe with 0.6 m diameter, made of concrete
                                                      • Partially filled
                                                      • Ex zone 1

                                                      Definition of tasks
                                                      • Continuous flow rate measurement in dry weather conditions to detect extraneous water volumes within the channel system
                                                      • Prioritisation of accurate detection of even lowest flow rates during night time
                                                      • Quick and easy installation of required sensors
                                                      • Easy and straightforward operation of the portable transmitter
                                                      • Investigation of Infiltration Water in larger Diameters
                                                      • Installation principle

                                                      Solution
                                                      • The portable flow measurement system Type PCM Pro has been used.
                                                      • A pipe mounting system (RMS) has been used for quick and secure sensor fastening.
                                                      • An air-ultrasonic sensor (LUS) has been used to even detect lowest flow levels.

                                                      Advantages
                                                      • Easy, straightforward and quick installation
                                                      • High accuracy and reliability
                                                      • Transmitter can be easily operated thanks to intuitive user interface

                                                  • Wastewater Treatment Plant

                                                  • Flow measurement, level measurement, interface or turbidity measurement in WWTPs

                                                      • Stormwater Treatment Facilities

                                                      • Flow measurement on spillways according to self-monitoring regulation

                                                            • Flow Measurement

                                                            • Application
                                                              • Pipe with 1.5m diameter, overflow on the side
                                                              • Part filled
                                                              • Concrete construction

                                                              Definition of tasks
                                                              • Stormwater overflow measurement in intake area of a WWTP according to EC self-monitoring regulation
                                                              • Detection of overflow volume, overflow time and duration according to German DWA directives
                                                              • Flow Measurement at Overflow Sill
                                                              • Measurement principle at overflow weir

                                                              Solution
                                                              • The non-contacting ultrasonic measurement system NivuMaster has been used.
                                                              • All established discharge characteristics, which may be selected depending on the shape of the sill, are stored in the transmitter.

                                                              Advantages
                                                              • No additional PLC required, since daily volumes and total volumes are detected and saved internally
                                                              • Quick and easy system programming thanks to clear text menus in dialog mode

                                                        • Intake Area

                                                        • Flow measurements and level measurement in open and closed channels and pipes in WWTP intake areas

                                                            • Flow Measurement Part Filling

                                                            • Application
                                                              • Rectangular channel made of concrete, width 1m
                                                              • Part filled
                                                              • Strong fluctuation between daily and nightly inflow

                                                              Definition of tasks
                                                              • Continuous flow rate measurement in a WWTP intake area
                                                              • Additional external level measurement shall be avoided
                                                              • Cost-efficient, for monitoring only
                                                              • No high accuracy is required
                                                              • Quick and easy sensor mounting
                                                              • Open Channel Flow Measurement
                                                              • Schematic diagram of a combi sensor with pressure measurement cell in a rectangular channel

                                                              Solution
                                                              • The flow measurement system Type OCM F operates based on the Doppler principle.
                                                              • A wedge-shaped flow velocity sensor has been installed in the center of the rectangular channel.
                                                              • The flow velocity sensor has been equipped with a pressure measurement cell to avoid the need for an additional external level measurement.

                                                              Advantages
                                                              • Easy, quick and robust installation
                                                              • Cost-effective measurement
                                                              • Velocity and level measurement in one sensor

                                                            • Flow Large Intake Area

                                                            • Application
                                                              • Structured U profie made of concrete, 2.5 x 2.5 m (w x h) with dry weather channel
                                                              • Partially filled
                                                              • Very high discharge dynamics
                                                              • Risk of sedimentation during nighttime

                                                              Definition of tasks
                                                              • Detection of flow rate to WWTP
                                                              • Highest possible accuracy despite very high discharge dynamics featuring levels from 40 to 200 cm
                                                              • Flow Measurement in large WWTP Intake Area
                                                              • Installation principle

                                                              Solution
                                                              • The measurement system Type OCM Pro CF with three CS2 flow velocity sensors has been used.
                                                              • The sensors have been installed on wedge supports due to the risk of sedimentation.
                                                              • A cable protection mounted directly on the sensor prevents damages through rat bites or similar.


                                                              Advantages
                                                              • Easy programming thanks to internal channel shape presets
                                                              • Required accuracies are met thanks to the use of 3 velocity sensors
                                                              • High resolution of readings through 2 analog outputs with different scales for dry weather and rain weather

                                                            • Replacement of Defective EMF

                                                            • Application
                                                              • Steel cast pipe with 700 mm diameter
                                                              • Full filled
                                                              • Existing EMF in pipeline defective

                                                              Definition of tasks
                                                              • Cost-efficient installation of the new flow measurement
                                                              • Defective EMF should not be removed if possible (costs)
                                                              • No interruption of running processes
                                                              • Flow Measurement – Replacement of defective EMF
                                                              • Principle of measurement place


                                                              Solution
                                                              • A permanent flow measurement transmitter Type NivuFlow 750 in combination with a flow velocity pipe sensor using the ultrasonic cross correlation method is the best instrumentation.
                                                              • Upstream of the defective EMF a clamping system with nozzle and ball valve has been fastened on the pipeline.
                                                              • A hole has been drilled into the pipe through the nozzle of the clamping system, which then has been used to screw the sensor in.


                                                              Advantages
                                                              • Quick and easy retrofitting within very short time
                                                              • Saves costs since the old measurement system does not need to be removed
                                                              • No interruption of running processes
                                                              • High accuracy and reliability

                                                            • Retrofitting Flow Measurement

                                                            • Application
                                                              • Two pipes with 0.6 m diameter, made of stainless steel
                                                              • Full filled
                                                              • Pipes previously installed

                                                              Definition of tasks
                                                              • Continuous measurement of single volumes to achieve even distribution of partial volumes and hence the best possible sedimentation behaviour in both parallel grit chambers by using both upstream control valves.
                                                              • Existing pipes shall not be dismantled for installation of measurement system.
                                                              • Welding works within the pit shall be avoided.
                                                              • Flow Measurement behind Grit Chamber
                                                              • Installation principle

                                                              Solution
                                                              • The particularly for full pipes developed flow measurement system Type NFP has been used.
                                                              • Sensor nozzles have been fastened on existing stainless steel pipe lines by using tensioning belts.

                                                              Advantages
                                                              • Easy, simple and quick upgrading without the need for welding works.
                                                              • High accuracy and reliability.
                                                              • No process disruption for installation

                                                            • Flow Measurement with Pontoon

                                                            • Application
                                                              • Rectangular concrete channel 1.4 x 1.2 m (w x h)
                                                              • Partially filled
                                                              • Sedimentation on channel bottom due to low flow velocities

                                                              Definition of tasks
                                                              • Continuous measurement of intake volumes to wastewater treatment plant
                                                              • Consideration of varying sedimentation levels on the channel bottom to ensure a maximum measurement deviation of 5%
                                                              • Measurement shall be installed and maintained under process conditions
                                                              • Flow Measurement with Pontoon
                                                              • Construction principle of floating measurement


                                                              Solution
                                                              • This task has been solved using a floating measurement array. The flow here is detected by using the cross correlation measurement method (NivuFlow 750).
                                                              • The floating sensor calculates the flow volume from the detected flow level and the flow profile. Sedimentation layers are detected and compensated automatically.


                                                              Advantages
                                                              • The mechanical components have been manufactured at reasonable costs on behalf of the customer according to NIVUS specifications.

                                                            • Comparative Measurement on Grid Rack

                                                            • Application
                                                              • Rectangular channel 0.8 x 0.8 m (w x h)
                                                              • Low-pitched sensor installation points
                                                              • Covers on rectangular channels must not be opened
                                                              • Ex zone 1

                                                              Definition of tasks
                                                              • Measurement of primary and secondary impoundage to calculate switching thresholds for grid rack operation
                                                              • Maximum primary impoundage has to engage an emergency bypass
                                                              • Level difference, primary and secondary impoundage are to be indicated
                                                              • Forwarding of readings and switching points to following control system
                                                              • Comparative Measurement on Grid Rack
                                                              • Application diagram

                                                              Solution
                                                              • Using two echo sounders Type NivuCompact with intrinsically safe power supply in connection with the NivuCont Plus transmitter is cost effective and easy to be installed.
                                                              • Clear text menus lead the user through the system configuration process. The complete application parameters can be set up by a few settings.

                                                              Advantages
                                                              • Unproblematic installation through low dead zones of the ultrasonic sensors used (only 12.5 cm)
                                                              • No need to use a PLC thanks to transmitter-integrated complete control algorithms

                                                            • Level Measurement in Grease Trap

                                                            • Application
                                                              • Depth of pit: approx. 4 m
                                                              • Medium: wastewater with grease contents and temporary foam formation

                                                              Definition of tasks
                                                              • Reliable measurement of the wastewater-grease mixture level in the pit
                                                              • A pressure measurement probe should be used since non-contact ultrasonic sensors would fail due to occasional foam formation on the surface
                                                              • Grease accumulation should not damage the sensor cables
                                                              • Maintenance and cleaning should be possible in a quick and easy manner
                                                              • Level Measurement in Grease Trap
                                                              • NivuBar Plus in special version “G”

                                                              Solution
                                                              • Utilisation of a submersible probe (special version of NivuBar Plus II) with integrated G 1“ outer thread for direct installation of a protective pipe.

                                                              Advantages
                                                              • Protective tube to protect the sensor cable against incrustation and mechanical stress
                                                              • Easier removal for regular cleaning
                                                              • Safe fastening as well as easier und more accurate depth adjustment (0-point) thanks to the protective tube

                                                          • Preclarification

                                                          • Flow measurement and interface measurement in WWTP primary treatment areas

                                                                • Separation Layer Measurement

                                                                • Application
                                                                  • Rectangular basin 30 m x 8.5 m with two outlet funnels
                                                                  • Basin depth 2.8 m
                                                                  • Funnel depth 5.8 m

                                                                  Definition of tasks
                                                                  • Sludge discharge control depending on the sludge level
                                                                  • Continuous detection of both sludge levels and analog transmission to the control system
                                                                  • Cost-efficient measurement system
                                                                  • Separation Layer Measurement in Primary Clarifier
                                                                  • Measuring two separate sludge funnels

                                                                  Solution
                                                                  • The two-channel version of the NivuScope 2 measurement system has been used to detect two separate sludge levels.
                                                                  • Both separate sludge levels have been transmitted to the control system using both current outputs.

                                                                  Advantages
                                                                  • Maintaining a defined sludge level increases the dry substance concentration and hence increases the efficiency of the digestion tower

                                                            • Sludge Treatment

                                                            • Flow measurement for recirculation, return sludge and heating sludge as well as interface measurement in preliminary thickeners

                                                                • Sludge Measurement

                                                                • Application
                                                                  • Pipe with 0.4 m diameter, made of stainless steel
                                                                  • Full filled
                                                                  • High pollution load, up to 1 % dry solids

                                                                  Definition of tasks
                                                                  • Failsafe and stable measurement of the return sludge conveyed using screw pump lifting equipment in the horizontal line downstream of the transfer chamber
                                                                  • Both existing measurements (EMF + clamp-on) did not work reliably or did not work at all due to high pollution and gas loads
                                                                  • Low installation expenses
                                                                  • Recirculation Flow Measurement
                                                                  • Setup of measurement place

                                                                  Solution
                                                                  • The flow measurement system Type NFP has been used.
                                                                  • Upstream of the non-functioning EMF a hole has been drilled and a nozzle has been welded onto the existing pipeline. Subsequently a ball valve for sensor removal under process conditions has been installed and the sensor has been adjusted and fixed.

                                                                  Advantages
                                                                  • Easy, simple and quick upgrading of existing facilities
                                                                  • Old measuring devices did not necessarily need to be removed
                                                                  • Reliable measurement despite high dry solid contents

                                                                • Return Sludge

                                                                • Application
                                                                  • Pipe with 0.7 m diameter, made of stainless steel
                                                                  • Full filled
                                                                  • Point of installation in telescopic pipe
                                                                  Definition of tasks

                                                                  • Detection of sludge volumes to monitor and to control even sludge discharge from the secondary clarification tanks
                                                                  • The only possible access to the volume flow is the vertically retractable telescopic pipe
                                                                  • Maintenance-free operation and a measurement uncertainty of less than 5% shall be guaranteed
                                                                  • 实现不major reconstruction measures
                                                                  • Return Sludge Flow Measurement
                                                                  • Measurement principle

                                                                  Solution
                                                                  • The flow measurement system Type NFP for full pipes has been used.
                                                                  • The fully submersible sensor Type POA has been installed in the top section of the telescopic pipe.
                                                                  • Flow profile detection enables accurate flow measurement. Dry solid contents higher than 1% do not affect the measurement.

                                                                  Advantages
                                                                  • Easy and cost-effective upgrading
                                                                  • High reliability and reproducibility
                                                                  • Insensitive to pollution
                                                                  • Maintenance-free

                                                                • Hot Sludge

                                                                • Application
                                                                  • Pipe with 0.15 m diameter, made of stainless steel
                                                                  • Full filled
                                                                  • Medium contains oil and hot sludge
                                                                  • High dry substance contents up to 30 g/l

                                                                  Definition of tasks
                                                                  • Continuous measurement of sludge coming from a digestion tower and being pumped through a heat exchanger. Required to detect possible blockage or reduced pump performance and to ensure permanent heat supply for the WWTP social areas.
                                                                  • Hot Sludge Flow Measurement
                                                                  • Measurement place with installed sensor

                                                                  Solution
                                                                  • The flow measurement system Type NFP has been used.
                                                                  • 一个洞钻到现有stainless steel pipe line and a nozzle has been welded. Subsequently the flow velocity sensor has been adjusted and fixed.

                                                                  Advantages
                                                                  • Easy, straightforward and quick upgrading of existing facilities.
                                                                  • High measurement accuracy and reliability despite heavy pollution.

                                                                • Separation Layer Measurement

                                                                • Application
                                                                  • Diameter 15 m
                                                                  • Depth 9.50 m
                                                                  • Volume approx. 1500 m³

                                                                  Definition of tasks
                                                                  • Replacement of defective interface measurement without the need to modify the buildings
                                                                  • New sensors should be installed by hanging them through the existing holes in the ceiling into the medium to measure
                                                                  • Transmission of interface levels as 4 - 20 mA signal via available lines to control system
                                                                  • Separation Layer Measurement in Pre-Thickener
                                                                  • NivuScope 2 with radio transmission

                                                                  Solution
                                                                  • The interface measurement unit NivuScope 2 has been used
                                                                  • The transmitter has been installed on the pre-thickener and the sensor has been suspended through an existing hole in the ceiling into the medium by using a chain.

                                                                  Advantages
                                                                  • Easy, uncomplicated and quick retrofitting without the need to modify the building

                                                              • Discharge Area

                                                              • Flow measurement with syphon culvert, Venturi or baffle plate in WWTP discharge areas. Turbidity measurement in testing shaft

                                                                  • Flow Measurement Outtake Area

                                                                  • Application
                                                                    • Pipe DN 150, made of stainless steel
                                                                    • Full filled
                                                                    • EMF, faultily installed

                                                                    Definition of tasks
                                                                    • Accurate measurement with high operational reliability required, which currently cannot be guaranteed due to the installed EMF, air within the pipeline and a much too short calming section
                                                                    • Quick, easy and cost-efficient retrofitting
                                                                    • Flow Measurement Using Inverted “Goose Neck” Siphon
                                                                    • Measurement Setup

                                                                    Solution
                                                                    • A transit time measurement system Type NivuSonic using 2 measurement paths has been used.
                                                                    • The sensors have been installed in a measuring pipe with integrated ball valves. This allows to replace sensors under process conditions at any time.
                                                                    • Crosswise path arrangement virtually eliminates crossflow during calculation.

                                                                    Advantages
                                                                    • Easy and robust installation using calibrated pipe segment
                                                                    • No bypass required
                                                                    • High accuracy and reproducibility

                                                                  • Bypass Flow Measurement

                                                                  • Application
                                                                    • Stainless steel pipes with 80 mm and 200 diameters
                                                                    • Full filled
                                                                    • Existing EMF with reduced diameter
                                                                    • Backwater formation under full load

                                                                    Definition of tasks
                                                                    • Cost-efficient and accurate measurement even at low flow rates in the 200 mm bypass line and eliminiation of EMF due to frequently flooded facility
                                                                    • 实现不major modifications and additional flanges, stop valves and similar
                                                                    • Flow Measurement at Overflow Sill
                                                                    • Top View on schematic measurement setup

                                                                    Solution
                                                                    • The existing emergency bypass has been replaced by a pipe with 0.2 m diameter and a nozzle. The NFP sensor is installed in the nozzle.
                                                                    • It is not necessary to use a stop valve if a ball valve is used. This allows to exchange or to control the sensor under operating conditions.
                                                                    • Old measurement remains on site without being dismantled.

                                                                    Advantages
                                                                    • Easy, straightforward and quick upgrading of existing facilities

                                                                  • Partial Discharge Section Flow Measurement

                                                                  • Application
                                                                    • Pipe DN 500, made of stainless steel
                                                                    • Full filled
                                                                    • Service water tapping and feeding point

                                                                    Definition of tasks
                                                                    • For secondary clarification control a partial discharge of the WWTP needs to be measured
                                                                    • Recorded values shall be forwarded to control system
                                                                    • Partial Discharge Section Flow Measurement
                                                                    • Sensors installed in pipe line

                                                                    Solution
                                                                    • A transit time measurement system Type NivuSonic using 2 measurement paths has been used.
                                                                    • The sensors have been installed in a measuring pipe with integrated ball valves. This allows to replace sensors under process conditions at any time.
                                                                    • Crosswise path arrangement virtually eliminates crossflow during calculation.

                                                                    Advantages
                                                                    • Easy and robust installation using calibrated pipe segment
                                                                    • No bypass required
                                                                    • High accuracy and reproducibility

                                                                  • Flow Measurement in Venturi Flume

                                                                  • Application
                                                                    • Rectangular channel 0.5 x 0.6 m (w x h), made of concrete
                                                                    • Part filled
                                                                    • Upgrading an existing Venturi flume with a measurement system

                                                                    Definition of tasks
                                                                    • Detection of wastewater treatment plant discharge using existing Venturi flume
                                                                    • Output of flow volume to control system
                                                                    • Output of volume-proportional m³-impulses for on-site counter
                                                                    • Flow Measurement in Venturi Flume
                                                                    • Schematic diagram of Venturi flume and correct sensor position

                                                                    Solution
                                                                    • A Q/h related ultrasonic volume measurement Type NivuMaster has been installed.
                                                                    • In order to maintain the measuring uncertainty as low as possible, an ultrasonic sensor with a very low dead zone (Type P-M3, dead zone 0.07m) has been selected to detect impoundage level.
                                                                    • All signals requested by the customer are transmitted from the transmitter to the control system and the on-site counter.
                                                                    • The sensor has been installed above the Venturi flume by using a standard wall installation angle.

                                                                  • Flow Measurement Impoundage Shield

                                                                  • Application
                                                                    • Pipe DN 400, made of stainless steel
                                                                    • Part filled
                                                                    • Only short measuring section available
                                                                    • Low nightly discharge

                                                                    Definition of tasks
                                                                    • Implementation of discharge measurement to replace flat-rate billing using the existing inlet measurement and to save costs
                                                                    • Reliable and accurate detection of low flow volumes during the nights
                                                                    • Low efforts and expenses for measurement installation
                                                                    • Flow Measurement using Impoundage Shield
                                                                    • Setup of measuring section

                                                                    Solution
                                                                    • The task has been solved using an OCM Pro CF.
                                                                    • The discharge pipe into the recipient has been left unmodified. It now is used as new measuring section
                                                                    • A flow velocity sensor with integrated pressure cell for level measurement has been installed using a pipe mounting system.
                                                                    • To detect even lowest volumes, an impoundage shield has been installed to constantly create a minimum water level.

                                                                    Advantages
                                                                    • No facility modification required
                                                                    • Sensor fastening without drilling or similar
                                                                    • High measuring dynamics between nightly discharge and rainy weather can be measured

                                                                • Flowing Waters

                                                                • Flow measurement in open flowing waters

                                                                    • Power Plants

                                                                    • Flow measurement in turbine intakes and for cooling water

                                                                          • Flow Measurement in Turbine Intake

                                                                          • Application
                                                                            • Rectangular channel 7.8 x 2.0 m (w x h)
                                                                            • Partially filled
                                                                            • Concrete walls due to bridge
                                                                            • Natural bed

                                                                            Definition of tasks
                                                                            • Continuous detection of turbine intake volumes to ensure the minimum water flow of the river and to prevent the turbines from underload operation without shutdown
                                                                            • Easy installation of measurement system
                                                                            • Flow Measurement in Turbine Intake
                                                                            • Installation of rod sensors

                                                                            Solution
                                                                            • A transit time measurement Type NivuChannel has been used due to water quality and low suspended solids content.
                                                                            • A measurement point underneath a bridge has been selected in order to obtain the best possible profile shape.
                                                                            • The natural bed is tending to crossflow effects. Two measurement paths have been installed crosswise to compensate these effects.

                                                                            Advantages
                                                                            • Easy and robust installation
                                                                            • High accuracy
                                                                            • Reproducibility of readings
                                                                            • Reliability under all process conditions

                                                                      • Irrigation & Drainage Systems

                                                                      • Flow measurement in water reservoir, in irrigation channels and to ensure minimum discharge volumes

                                                                          • Flow Measurement in Service Reservoir

                                                                          • Application
                                                                            • Special profile, approx. 2.5 x 2.0 m (h x w)
                                                                            • Partially filled
                                                                            • 通道的natural stone and concrete
                                                                            • High flow dynamics

                                                                            Definition of tasks
                                                                            • Detection of readings of a service reservoir intake for volume control and water management
                                                                            • The measurement systems must ensure reliable handling of high flow dynamics from very low inflow up to a maximum inflow of up to 2000 l/s
                                                                            • Flow Measurement in Service Reservoir
                                                                            • Measurement point in conveyance culvert

                                                                            Solution
                                                                            • A flow measurement system Type OCM Pro has been used. The level is detected by a separate compact echo sounder.
                                                                            • 传感器被安装在不锈钢plate to prevent the sensor from obstruction and to avoid vorticity on the channel bottom.

                                                                            Advantages
                                                                            • The particular profile can be easily programmed thanks to the user-friendly programming structure of the transmitter
                                                                            • The high measurement dynamics can be reliably handled thanks to specially adusted sensor systems

                                                                          • Contaminated Groundwater Flow Measurement

                                                                          • Application
                                                                            • Trapezoid channel 1.5 x 0.5 m (w x h)
                                                                            • Partially filled
                                                                            • Concrete channel bottom, embankment reinforced with water engineering stones
                                                                            • Remote measurement place

                                                                            Definition of tasks
                                                                            • Flow measurement in partially contaminated groundwater from former tar factory site for proof purposes
                                                                            • No power supply available
                                                                            • No solar power supply or open sensors possible due to the risk of vandalism
                                                                            • Long readout cycles of saved measurement data
                                                                            • Contaminated Groundwater Flow Measurement
                                                                            • Open switching cabinet with transmitter

                                                                            Solution
                                                                            • The portable flow measurement system Type PCM 4 with rechargeable battery and memory card data storage has been used.
                                                                            • Due to the slow fluctuation of readings a measuring interval of 30 minutes has been selected.
                                                                            • A combined flow velocity / level sensor has been mounted on the channel bottom.

                                                                            Advantages
                                                                            • Easy and quick sensor installation
                                                                            • No visible sensors
                                                                            • Long-life measurement without battery replacement or data backups

                                                                          • Irrigation Channel Flow Measurement

                                                                          • Application
                                                                            • Trapezoid concrete channel 9.5 x 2.5 m (w x h)
                                                                            • Partially filled
                                                                            • Very high volumes and velocities from time to time

                                                                            Definition of tasks
                                                                            • Detection and control of the volumes removed for irrigation purposes
                                                                            • Transmission of measurement data to center via existing network (Ethernet)
                                                                            • Highly dynamic measurement required (flow velocities from 0 – 200 cm/s)
                                                                            • Irrigation Channel Flow Measurement
                                                                            • Measurement place in use

                                                                            Solution
                                                                            • The flow measurement system Type NivuChannel has been used.
                                                                            • The economically most cost-efficient solution was to use two measurement paths. Excellent accuracy has been achieved by calibrating the system under varying operating conditions.

                                                                            Advantages
                                                                            • Reliable and stable measurement covering the entire flow range up to velocities higher than 2m/s
                                                                            • Cost-efficient measurement even in large channel dimensions

                                                                          • Flow Measurement to Ensure Minimum Discharge

                                                                          • Application
                                                                            • Trapezoid channel 7.0 x 3.0 m (w x h)
                                                                            • Partially filled
                                                                            • Concrete channel bottom, embankment reinforced with water engineering stones
                                                                            • Upstream adjustable water separator

                                                                            Definition of tasks
                                                                            • Flow measurement to ensure a minimum flow volume of 150 l/s for feeding into the drinking water production area of a city of over a million inhabitants
                                                                            • Highly dynamic low-maintenance system for reliable detection of flow rates even in case of flood
                                                                            • Flow Measurement to Ensure Minimum Discharge
                                                                            • Measurement place in use

                                                                            Solution
                                                                            • The flow measurement system Type OCM Pro has been used.
                                                                            • Two flow velocity sensors have been used to achieve redundancy and to improve accuracy.

                                                                            Advantages
                                                                            • Easy and quick sensor installation
                                                                            • High accuracy and reliability
                                                                            • Easy to verify

                                                                        • Flood Protection

                                                                              • Flow Measurement on Flood Polder

                                                                              • Application
                                                                                • Concrete duct 6 x 3.5 m (w x h)
                                                                                • Partially filled
                                                                                • 3 parallel ducts
                                                                                • Very high flow dynamics featuring flow rates up to 82 000 l/s

                                                                                Definition of tasks
                                                                                • Detection of flood polder flow volumes of a large European river
                                                                                • Control of storage volume utilisation (12 000 000 m³ on 5.8 km² flooding area) to reduce flood damage
                                                                                • Highly dynamic and maintenance-free measurement insensitive to sedimentation
                                                                                • Flow Measurement on Flood Polder
                                                                                • Polder gate and installed sensors

                                                                                Solution
                                                                                • Three flow measurement systems Type OCM Pro with each using 3 flow velocity sensors have been used.
                                                                                • The sensors have been arranged according to a calibrated hydraulic model to achieve maximum possible accuracy.
                                                                                • Sensors have been installed on profiles in order to prevent them from soiling.

                                                                                Advantages
                                                                                • Cost-efficient sensor installation in existing construction
                                                                                • Quick and easy commissioning
                                                                                • High accuracy and reliability

                                                                          • Industry

                                                                          • Flow measurement and turbidity measurement in industrial applications

                                                                              • Chemical Industry

                                                                              • Flow measurements on cooling water tapping points for monitoring of pumps and cooling processes

                                                                                    • Cooling Water Tap

                                                                                    • Application
                                                                                      • Closed concrete rectangular channel, 3.8 x 3.5 m (h x w)
                                                                                      • Partially filled

                                                                                      Definition of tasks
                                                                                      • Pump control as well as the cooling process require to permanently control the flow within the cooling water channel
                                                                                      • The inflow must be controlled due to the limited volume of the downstream sand separators
                                                                                      • Continuous flow detection even in case of fluctuating water levels
                                                                                      • Flow Measurement in Cooling Water Tap
                                                                                      • Installation rod sensors

                                                                                      Solution
                                                                                      • A transit time measurement Type NivuChannel has been used due to the clean medium.
                                                                                      • Rod sensors have been used, allowing to select holders which enable sensor removal from the outside under operating conditions. The sensor holders have been installed in the top area since the water level cannot be lowered for a longer period. This allows to remove the sensors from above for maintenance purposes.

                                                                                      Advantages
                                                                                      • High accurate flow detection
                                                                                      • Easy and robust installation
                                                                                      • Sensors can be removed or maintained under operating conditions

                                                                                • Food Industry

                                                                                • Combined flow measurements with water analytics to operate continuous measurement sites for billing

                                                                                      • Flow and Analysis Measurement

                                                                                      • Application
                                                                                        • Pipe with 0.3 m diameter, made of HDPE
                                                                                        • Partially filled
                                                                                        • Shift production
                                                                                        • Heavy flow fluctuation
                                                                                        • Low sedimentation

                                                                                        Definition of tasks
                                                                                        • Installation of a measurement place for billing purposes including flow rate and pH measurement as well as sampling point upstream of the junction into the municipal channel
                                                                                        • Accurate measurement of extremely low volumes up to maximum discharge
                                                                                        • The existing transfer shaft shall be used to install the measurement system
                                                                                        • Cleaning and control shall be carried out by one single person
                                                                                        • Flow and Analysis Measurement
                                                                                        • Schematic diagram of NPP including sampling and pH sensor

                                                                                        Solution
                                                                                        • Using the NIVUS Pipe Profiler (NPP) creates a high accurate flow measurement which furthermore is able to reliably detect and to compensate sedimentation and obstructions.
                                                                                        • pH sensor and sampling point have been integrated into the measurement pipe.
                                                                                        • The elbow segment of the measurement pipe may be folded away for cleaning purposes.

                                                                                        Advantages
                                                                                        • Compact and robust combined measurement place
                                                                                        • Cost effective measurement from the top of the manhole.

                                                                                  • Power Plants

                                                                                  • Accurate flow measurements for cooling water and turbine intakes even in high flow velocities

                                                                                      • Cooling Water Flow Measurement

                                                                                      • Application
                                                                                        • Rectangular channel 20 x 5 m (w x h)
                                                                                        • Part filled
                                                                                        • Walls and bottom made of concrete
                                                                                        • High oxygen content up to 10 mg/l and temperature layers in the medium

                                                                                        Definition of tasks
                                                                                        • Investigation of cooling water volumes required for cooling of several large gas generators for waste heat balancing
                                                                                        • Installation during operation without the need to employ divers
                                                                                        • No sensor installation on the channel bottom allowed due to the risk of sedimentation
                                                                                        • Cooling Water Flow Measurement
                                                                                        • Installation Principle


                                                                                        Solution
                                                                                        • The flow measurement system Type NivuChannel has been used.
                                                                                        • A system with 4 crossed paths ensures high reliability and accuracy.
                                                                                        • Rod sensors installed on the channel walls ensure easy installation, adjustment and maintenance accessibility.

                                                                                        Advantages
                                                                                        • Quick installation at short notice of the complete system during operation without the need for divers
                                                                                        • High accuracy and reliability

                                                                                      • Flow Measurement Big Pipe

                                                                                      • Application
                                                                                        • Pipe DN 2400 made of wrapped GRP
                                                                                        • Part filled
                                                                                        • Cooling water (seawater) with max. flow rate of 60.00³/h from power plant

                                                                                        Definition of tasks
                                                                                        • Accurate flow detection at flow velocities up to 6 m/s
                                                                                        • No holes must be drilled into the plastic pipe

                                                                                        Solution
                                                                                        • A permanent flow transmitter Type OCM Pro CF with wall mount enclosure has been used. As accompanying sensor the high-performamce flow velocity sensor Type CS2 utilising the ultrasonic cross-correlation method has been selected.
                                                                                        • The sensor has been fastened on the pipe bottom using a mounting sheet and a special synthetic resin adhesive.
                                                                                        • An external ultrasonic level measurement using a NivuNaster L2 with a p10 sensor has been installed additionally as redundant level system.

                                                                                        Advantages
                                                                                        • Low installation expenses
                                                                                        • Reliable and stable measurement in all measuerment ranges

                                                                                      • Turbine Intake Flow Measurement

                                                                                      • Application
                                                                                        • Steel pipeline with 1400 mm diameter
                                                                                        • Remotely situated and hence no power supply available
                                                                                        • High flow velocities

                                                                                        Definition of tasks
                                                                                        • Installation of flow measurement to verify the turbine performance in the pipeline down to valley
                                                                                        • No holes must be drilled into or mechanical parts must be welded onto the pipeline
                                                                                        • No system shutdown possible for installation works
                                                                                        • Turbine Intake Flow Measurement
                                                                                        • Principle of transit time method

                                                                                        Solution
                                                                                        • The portable measurement system PCO using the ultrasonic transit time method has been used for this application.
                                                                                        • No need to interrupt the running process thanks to attaching the sensors on the pipeline outside by using tensioning belts (clamp-on).


                                                                                        Advantages
                                                                                        • No interruption of running processes
                                                                                        • Easy installation
                                                                                        • Temporary measurement with long lifetime
                                                                                        • Stable and reliable measurement

                                                                                    • Surface mining

                                                                                    • Flow measurements with GPRS data transmission and turbidity measurement for drainage

                                                                                        • Mine Water Flow Measurement

                                                                                        • Application
                                                                                          • Rectangular concrete channel 2.5 x 1.5 m (w x h)
                                                                                          • Partially filled
                                                                                          • Pit water purification system of a brown coal surface mining plant
                                                                                          • Medium with high solid contents (iron ochre)

                                                                                          Definition of tasks
                                                                                          • Continuous volume measurement for subject-to-control hydraulic plant efficienc
                                                                                          • Iron oxide (ochre) contained in the pit water shall not influence the measurement system
                                                                                          • Redundant water level measurement
                                                                                          • Mine Water Flow Measurement
                                                                                          • Measurement setup

                                                                                          Solution
                                                                                          • The planned expensive solution using a Venturi flume has been replaced by the cost-efficient and more accurate OCM Pro measurement system.
                                                                                          • Apart from flow measurement, the application has been equipped with 2 different level measurements to ensure redundancy. An air-ultrasonic as well as a water-ultrasonic sensor have been used.

                                                                                          Advantages
                                                                                          • Higher accuracy and measurement dynamics than the planned Venturi measurement
                                                                                          • Higher flow velocities and less sedimentation than Venturi measurement with backwater
                                                                                          • Construction costs reduced by 60%

                                                                                        • Autarchic flow measurement

                                                                                        • Application
                                                                                          • Rectangular channel made of concrete,
                                                                                          • 2.4 x 1.0 m (w x h)
                                                                                          • Part filled
                                                                                          • No power supply

                                                                                          Definition of tasks
                                                                                          • Detection of the discharge volumes from pit water purification system
                                                                                          • Automated regular remote data transmission
                                                                                          • Installation without additional constructions in existing channel
                                                                                          • No switching cabinet desired (risk of vandalism)
                                                                                          • Flow Measurement via GPRS-Transmission

                                                                                          Solution
                                                                                          • The compact solar-powered measurement station Type NivuLog SunFlow with integrated solar controller, rechargeable battery and GPRS modem has been selected.
                                                                                          • The flow velocity Doppler sensor with integrated pressure cell for flow level detection has been installed on a plate on the channel bottom and was directly connected to the measurement station without using additional clamping connections.
                                                                                          • The values recorded (flow velocity, level, temperature and the flow rate calculated on site) are transmitted to the D2W Internet portal via GPRS to save the data.

                                                                                          Advantages
                                                                                          • Low installation and startup expenses

                                                                                        • Flow Measurement in Gold Ore Processing Plant

                                                                                        • Application
                                                                                          • Stainless steel pipe DN 500
                                                                                          • Partial filling with heavy fluctuation
                                                                                          • Acidified, very turbid water (approx. 50 NTU)

                                                                                          Definition of tasks
                                                                                          • Replacement of a non-functioning clamp-on measurement
                                                                                          • Continuous flow measurement to control a processing plant for acidified water
                                                                                          • Reliable measurement at fluctuating level, variable turbidity and acid contents

                                                                                          Solution
                                                                                          • The cross correlation method with digital pattern detection has been used. Here the pollution load does not affect the velocity evaluation.
                                                                                          • The corrosion-proof pipe sensor Type POA was installed directly from the outside using a welding nozzle bottom upwards flush with the channel bottom. The sensor provides readings on level and flow velocity directly to the transmitter.
                                                                                          • The transmitter computes the current flow rate and transmits the data via ModBus to the processing plant control system.

                                                                                          Advantages
                                                                                          • Easy and uncomplicated retrofitting without dismantling works on existing pipeline
                                                                                          • Reliable and failure-free measurement, even under heavily fluctuating intake conditions
                                                                                          • Quick and easy installation and commissioning
                                                                                          • Programming and commissioning in the national language

                                                                                      • Water Supply

                                                                                      • Flow measurement and level measurement for water supplies

                                                                                          • Groundwater

                                                                                          • Level measurement in well shafts, for pump control and in water metering shafts. Partially with data transmission via GRPS

                                                                                              • Deep Well Level Measurement

                                                                                              • Application
                                                                                                • Deep drilling 150 m
                                                                                                • Bore diameter 30 mm

                                                                                                Definition of tasks
                                                                                                • Continuous detection of groundwater level
                                                                                                • Detection using suspended pressure probe
                                                                                                • Pressure probe appropriate for small bore diameters of 30 mm
                                                                                                • Easy installation and removal for maintenance purposes
                                                                                                • Deep Well Level Measurement
                                                                                                • Deep well with core drilling

                                                                                                Solution
                                                                                                • A submersible well probe Type AquaBar BS with fixed cable has been used for continuous detection of the groundwater level.

                                                                                                Advantages
                                                                                                • Universal use of probe due to low outside diameter of 19 mm.
                                                                                                • Long-life and corrosion-proof sensor body and diaphragm thanks to using stainless steel 1.4571.
                                                                                                • Easy installation and removal for maintenance due to lightweight probe.

                                                                                              • Pressure Boost Control

                                                                                              • Application
                                                                                                • Independent water supply for industry/community
                                                                                                • Long supply pipeline of approx. 100 m
                                                                                                • Pump head approx. 40 m

                                                                                                Definition of tasks
                                                                                                • Implementation of an industrial water supply using drilled well, pump station, overhead tank and collecting tank
                                                                                                • A high pump head as well as a supply line length of approx. 100 m have to be coped with.
                                                                                                • Automatic operation of 2 frequency inverter-controlled pumps for pressure boost in parallel and time-shifted mode using a transmitter
                                                                                                • Pressure Boost Control
                                                                                                • Water supply with pressure boost

                                                                                                Solution
                                                                                                • By using a transmitter Type NivuCont Plus it was possible to monitor the collecting tank level and to simultaneously switch the pumps for pressure boost with a time shift.
                                                                                                • The integrated pump exchange allows to control multiple pumps to ensure even capacity utilisation without any problems.

                                                                                                Advantages
                                                                                                • Independent transmitter for complex control tasks
                                                                                                • Easy system programming even without prior experience

                                                                                              • Independent Level Measurement

                                                                                              • Application
                                                                                                • Measuring tube with 150 mm diameter
                                                                                                • No power supply available on site

                                                                                                Definition of tasks
                                                                                                • Groundwater level measurement at multiple level measurement spots
                                                                                                • Data logger installed in measuring tube
                                                                                                • Stable and reliable data transmission
                                                                                                • Extremely long lifetime without the need to replace the battery
                                                                                                • Forwarding of measurement data to higher control system
                                                                                                • Level Measurement via GPRS
                                                                                                • Installation principle

                                                                                                Solution
                                                                                                • A battery-powered GPRS level data collector with a directly connected pressure probe Type AquaBar has been used.
                                                                                                • The very powerful battery and a very short measurement duration of less than 1 sec. per measurement allow a battery life of approx. 10 years.
                                                                                                • Thanks to very compact dimensions and the high protection degree it was possible to place the data logger directly within the measuring tube.
                                                                                                • 有效的数据压缩以及特殊transmission method ensure uninterrupted transmission of readings. The connection to the customer process control system is carried out using the NIVUS data portal "Device to Web".

                                                                                            • Drinking Water

                                                                                            • Flow measurement for overnight supply, for inlets and outlets in elevated tanks as well as in water pipes. Partially contactless

                                                                                                • Detection of Nighttime Volume

                                                                                                • Application
                                                                                                  • Pipe with 0.1 m diameter
                                                                                                  • Full filled
                                                                                                  • Low water volumes of approx. 3 l/s

                                                                                                  Definition of tasks
                                                                                                  • Detection of low issue quantities from a drinking water overhead tank during nighttimes
                                                                                                  • Replaces the EMF not working properly due to low flow velocities
                                                                                                  • Data transmission via GPRS to center
                                                                                                  • Nighttime Supply Flow Measurement
                                                                                                  • Installation principle of V-measurement

                                                                                                  Solution
                                                                                                  • The flow measurement system Type NivuSonic has been used.
                                                                                                  • The measurement has been installed as v-shaped single path measurement due to the narrow diameter.
                                                                                                  • Using the transmitter-integrated GPRS modem allows direct connection to a process control system.

                                                                                                  Advantages
                                                                                                  • Easy, straightforward and quick upgrading
                                                                                                  • No additional adapters and constrictions required
                                                                                                  • High accuracy and reliability at low flow velocities

                                                                                                • Volume Measurement Overhead Tank

                                                                                                • Application
                                                                                                  • Pipe with 0.25 m diameter, made of cast iron
                                                                                                  • Full filled
                                                                                                  • Overhead tank featuring one single pipeline and flow in both directions

                                                                                                  Definition of tasks
                                                                                                  • Comparison between water volumes consumed within the supply network during daytime and the water volumes refilled during nighttime to detect pipeline breaks or leakage
                                                                                                  • Measurement an a single pipeline featuring bidirectional flow
                                                                                                  • Sensors shall be installed in permanently full iron cast pressure pipelines (no shut-off or draining devices available)
                                                                                                  • Overhead Tank Intake and Discharge Measurement
                                                                                                  • Installation principle

                                                                                                  Solution
                                                                                                  • A transmitter type Type NivuSonic has been selected to solve the task.
                                                                                                  • One pair of wetted sensors has been used. These sensors have been screwed into 2 pressure-proof tensioning clamps under operating conditions using a drilling device.

                                                                                                  Advantages
                                                                                                  • Easy, straightforward and quick upgrading without the need to drain the pipe
                                                                                                  • High accuracy and reliability