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  • Offer Profile
  • Our portfolio: The right solution for every customer from a single source

    We, the GHM GROUP, offer a broad spectrum of measuring technology for the most varied application areas. From sensors and electronics for industrial use to environmental measuring technology, as well as laboratory and handheld measuring devices and even extending into data acquisition. Devices of the utmost precision, first-class quality and an outstanding price-performance ratio.
Product Portfolio

  • GHM GROUP – the all-round specialists for measuring technology

  • Five strong, traditional brands under one roof
    什么began as a vision in 2009, is being continuously driven forward: Merging the five well-known family businesses under one roof, we can now respond quickly and flexibly to global trends with bundled competence and offer our customers a comprehensive range of state-of-the-art measuring technology from a single source. Moreover, this step will further strengthen the excellent reputation of our traditional brands and their technological expertise.

    Measuring technology – everywhere at the switch points of the world
    With the GHM GROUP a hidden champion has formed in the sensors and measuring technology market. A market of increasing significance. Today in the Smart Factory, measuring, testing, monitoring and automating are already ubiquitous and with the Internet of Things the advance of measuring technology continues.

    Our portfolio: The right solution for every customer from a single source
    We, the GHM GROUP, offer a broad spectrum of measuring technology for the most varied application areas. From sensors and electronics for industrial use to environmental measuring technology, as well as laboratory and handheld measuring devices and even extending into data acquisition. Devices of the utmost precision, first-class quality and an outstanding price-performance ratio.

    捆绑competence: Our flexible pool of R&D engineers
    We use our technical centers to develop tailored customer-oriented solutions. Our more than 40 specialists bring their know-how into a multi-disciplinary team, which quickly and flexibly develops tailored solutions that meet the requirements of our customers. United innovation that is unrivalled in the measuring technology industry!

      • Products

          • Sensors

              • Multifunction sensors

                • Fill level/limit level switch
                • EASYBus temp. and humidity
                • Room climate data logger
                • pH/Redox/temperature set
                • Climate measuring set
                • Climate measuring device
                • Humidity and Temp. transducer

              • 温度

                • Temperture sensors
                • Temperture sensors with transmitter
                • Hygienic temperture sensors
                • 温度switch
                • Hygienic temperture switch
                • Accessories

              • Humidity

                • Absolute humidity
                • 相对湿度
                • Dew point

              • Analyse liquid & gas

                • pH /Redox (ORP)
                • Dissolved oxygen
                • Turbidity
                • CO / CO2
                • Conductivity
                • Air oxygene

              • Pressure

                • Pressure sensor
                • Pressure switch
                • Differential pressure sensors
                • Differential pressure switch
                • Hygienic pressure sensors
                • Accessories

              • Flow

                • Piston valve design
                • Piston inline design
                • Rotameter
                • 动态膜
                • Paddle
                • Flow sensors (calorimetric)
                • Hygienic Flow sensors (calorimetric)
                • Rotor
                • Turbine
                • Gear wheel
                • Spindle (Screw)
                • Magnetic inductive (MID)
                • Vortex
                • Hygienic Flow
                • Sight glass
                • Manifold block
                • Accessories

              • Level

                • Float switch
                • Thermal level switches
                • Level capacitve switches
                • Level conductive switches
                • Hygienic level switches
                • continuous float detector
                • Hydrostatic level
                • Ultrasonics level
                • Capacitive level
                • Potentiometric level
                • Hygienic level
                • Accessories

              • Environmental

                • Solar radiation
                • Rain
                • Pressure / Barometer
                • PAR Photosyntetically Activity Radiation
                • PMV
                • PPV
                • Lumen
                • LUX
                • UVA UVB UVC
                • VIS-NIR
                • Wet Bulbe Globe temperature WBGT
                • Air / Wind speed

            • Electric connection

                • Connector

                  • Plug connector
                  • Logger software
                  • USB interface converter
                  • Measurement data software
                  • Software for handheld devices

              • Armatures

                  • Sight glass

                    • Flow indicator
                    • Flow indicator, sight glass
                    • Flow indicator, flap
                    • Fill level indicator
                    • Flow indicator, ball

                  • Flow restrictor

                    • Fine filters
                    • Magnetic separators

                  • Tees

                    • Industry
                    • Hygienic general
                    • Hygienic for temperture sensors

                  • Fittings

                    • Cutting/compression fitting
                    • Compression fitting
                    • Mounting flange

                  • Welding socket / Soldering sleeve

                    • Weld-on sleeve
                    • Welded / soldered connection

                • Industrial electronic

                    • Transmitters

                      • Multifunction
                      • 温度
                      • Air humidity
                      • Humidity
                      • Air pressure
                      • Pressure
                      • Air / Wind speed
                      • pH / Redox ORP
                      • Conductivity
                      • CO / CO2
                      • Level
                      • Resistance / Strain gauge
                      • Standard signal
                      • Current/ Voltage
                      • Power
                      • Frequency
                      • Vibration
                      • Math module
                      • Signal filter

                    • Isolation amplifier/ Supply isolator

                      • Isolation amplifier
                      • Supply isolator
                      • Switch amplifier

                    • Indicator (cabinet)

                      • Standard signal
                      • 温度
                      • Resistance
                      • BCD
                      • Level
                      • Flow
                      • Current / Voltage
                      • Rotation speed
                      • Distance

                    • Indicator (field housing)

                      • Standard signal
                      • Level
                      • Rotation speed

                    • Control technology

                      • Controler
                      • Mulit-Function-Controler
                      • Setpoint generators

                    • Safety

                      • Current / Voltage
                      • Standard signal
                      • 温度
                      • Isolation
                      • STL Safety temperture limitter

                    • Power electronic

                      • 独唱d-state relays / Power module
                      • Current transformer
                      • Power indictor

                  • Handhelds

                      • Temperture

                        • 热电偶
                        • Resistance measurement / Pt100 / Pt1000
                        • Infrared
                        • Reference- / Precision measurement
                        • Units with switchable sensors
                        • Data logger
                        • Agriculture & Soil temperture
                        • Accessories & Sensors

                      • Gas analysis

                        • Atmospheric oxygen
                        • O2/ CO / CO2 conzentration
                        • O2- partial pressure
                        • MAP-Application
                        • Air Nitrox /diving application
                        • Data logger
                        • Accessories & Sensors

                      • Conductivity EC / TDS

                        • Aquaristik, fish farming
                        • Drinking water & food
                        • Pure and ultrapure water
                        • Agriculture & soil messurement
                        • Water proofed units
                        • Data logger
                        • Accessories & Sensors

                      • pH/Redox

                        • Aquaristik, fish farming
                        • Drinking water & food
                        • Agriculture & soil messurement
                        • Water proofed units
                        • Data logger
                        • Accessories & Sensors

                      • Dissolved oxygen

                        • Aquaristik, fish farming
                        • Drinking water & food
                        • Process monitoring
                        • Agriculture & soil messurement
                        • Laboratory applications (GLP)
                        • Water proofed units
                        • Data logger
                        • Accessories & Sensors

                      • Humidity

                        • Climate- & air monitoring
                        • Weather station / Meteorology
                        • dew point
                        • Wet Bulbe Globe temperature WBGT
                        • Absolute humidity / Relative humidity
                        • Data logger
                        • Accessories & Sensors

                      • Material moisture

                        • Wood
                        • Building moisture
                        • Building damage/ Water damage
                        • Accessories & Sensors

                      • Pressure

                        • Differential pressure
                        • Relative pressure
                        • Absolute pressure, height measurement
                        • Heating, ventilation and air conditioning (HVAC)
                        • Measurement in liquids
                        • Vacuum measurement
                        • Ex-Applications
                        • Data logger
                        • Accessories & Sensors

                      • Environmental

                        • Air- / wind speed
                        • Barometer
                        • Lumen
                        • LUX
                        • PAR
                        • PMV
                        • PPV
                        • Solar radiation
                        • Sound / noise
                        • Turbidity
                        • UVA / UVB / UVC
                        • Wet Bulbe Globe temperature WBGT

                    • Test bed data acquisition

                      • Data logger

                          • Data logger WiFi

                            • Humidity
                            • Accessories & Software

                          • Data logger (corded)

                            • Temperture
                            • Air pressure / Air humidity
                            • Impuls
                            • Accessories & Software

                          • Portable-logger

                            • Multifunction
                            • Temperture
                            • Humidity
                            • Air pressure
                            • CO / CO2
                            • O2
                            • Accessories & Software

                        • Instruments by parameter

                            • 温度

                              • 温度sensors
                              • Transmitters
                              • Indicator
                              • Temperture level switch
                              • Temperture sensors with transmitter
                              • Hygienic temperture sensors
                              • Temperture switch
                              • Hygienic temperture switch
                              • Hand helds
                              • Data logger

                            • Flow

                              • Piston valve design
                              • Piston inline design
                              • Rotameter
                              • 动态膜
                              • Paddle
                              • Flow sensors (calorimetric)
                              • Hygienic Flow sensors (calorimetric)
                              • Rotor
                              • Turbine
                              • Gear wheel
                              • Spindle (Screw)
                              • Magnetic inductive (MID)
                              • Vortex
                              • Hygienic Flow
                              • Sight glass
                              • Manifold block

                            • Conductivity / TDS

                              • Sensors
                              • Indicator
                              • Hand helds

                            • Level

                              • Float switch
                              • Thermal level switches
                              • Level capacitve switches
                              • Level conductive switches
                              • Hygienic level switches
                              • continuous float detector
                              • Hydrostatic level
                              • Ultrasonics level
                              • Capacitive level
                              • Potentiometric level
                              • Hygienic level
                              • Indicator

                            • Pressure / Differential-Pressure

                              • Pressure sensor
                              • Indicator
                              • Pressure switch
                              • Differential pressure sensors
                              • Differential pressure switch
                              • Hygienic pressure sensors
                              • Hand helds

                            • power / current / voltage

                              • Transmitters
                              • Limit switches
                              • Indicator

                          • Service / Calibration / Training

                                • Programming devices

                                  • Honsberg
                                  • Martens
                                  • Hygienic applications

                            • Business Units

                                • Industrial Sensors

                                • The sensory organs of the modern world.

                                  Industrial sensors play an essential role in highly technical processes. They can see, they can hear and feel, they capture measured values and convert them into signals that can be further processed in order to monitor and control complex processes and entire factories. Sensors and electronics are an indispensable part of economic life today.

                                  The GHM GROUP is one of the top names for high-quality industrial sensors, with a broadly diversified assortment for virtually every implementation area. Our customers can solve multi-sensing tasks using the GHM GROUP as a one-stop-shop. No need to work with 4 or 5 specialised suppliers if you can get everything from a broadly specialised supplier and not only with very short leadtimes but even at a unmet price-performance ratio and at first-class quality, Made in Germany. With extensive know-how we develop and manufacture high-quality products meeting market needs for a broad spectrum of applications. Moreover, with our expertise we are capable of adapting our products quickly and efficiently to individual requirements and applications.

                                • Industrial Electronics

                                • You produce more quality. And we produce fewer costs.

                                  Even the most up-to-date technology of today is a dull tool in the competition of tomorrow. In the production process, modern industry imposes ever-higher requirements on all participating systems and components. To survive, modern plants must not only produce for maximum efficiency, but they must also be interconnected with other links in the value creation chain beyond the production site, in order to continuously improve their efficiency. Since the optimisation potential through digitalisation now appears to be exhausted for the most part, focus is increasingly placed on the future project Industry 4.0. Through the intelligent networking of digitalised know-how with automated manufacturing the path from demand to finished product is successfully bridged and decisively shortened.

                                • Environmental Technology

                                • Uncompromising quality is part of our nature.

                                  生活质量是我们env至关重要的影响ironment. To capture and quantify its influence variables is one of the key tasks of environmental measuring technology. In this regard the parameters extend far beyond the prevalent variables, such as temperature, pressure and moisture. In the area of occupational health and safety alone, complex measured variables, such as light influences exert a significant influence on our well-being. We analyse environmental influences with a broad program of the most varied measuring systems imaginable. Our solutions are in compliance with strict standards. Moreover, we are intensively involved with the monitoring of wind power and solar power plants. We deal appropriately with the safety aspects and make a vital contribution towards the economical operation of such a plant. On top of that, the precise recording of wind speeds also plays a major role in the area of large building machines or bridges.

                                • Portable Devices

                                • Measuring technology that makes your enterprise mobile.

                                  Every measurement is an intervention in an occurrence. But not every occurrence can be brought to the measurement site. So that you can analyse all events where they occur, our experts develop custom-tailored mobile measuring applications. The latest generation of handheld measuring devices combines the advantages of mobile use with the reliability and precision of a stationary process measuring device. With simple handheld devices extending to multi-functional systems with data loggers and interface to computer-assisted data acquisition and logging, we provide you with everything necessary for quantifying the relevant parameters. Characteristics, such as long service life, thanks to low power consumption, or simple handling, as well as the particular robustness or high level of connectivity, are some of the advantages of our instruments.

                                • Signal Conditioning & Data Acquisition

                                • Measured data is only of value to the extent that it can be further processed. Consequently, in the Smart Factory, one of the greatest challenges is to make measurement results available to a broad application without media disruption. This starts with simple process values for manufacturing and extends to the sensitive data for quality assurance and quality monitoring. The task of pure data acquisition and storage is virtually non-existent today. As a manufacturer of modern measuring systems, what counts for us is provision of relevant data that extends beyond the pure measurement result to the core tasks on the way to Industry 4.0.

                                  The forwarding and processing of information in a cloud is gaining increasing significance. Regardless of whether buildings, factory halls, storage facilities, freezing

                                  plants or clean rooms should be monitored, or whether the data should be stored and evaluated in the process itself – our specialists in the data logger area are always available to you to implement appropriate options.

                                • Calibration & Services

                                • Making measuring precision the standard.

                                  The quality of products and goods depends on faultless acquisition of measured values. Consequently, sensors play an essential role in modern manufacturing. However, every measurement must satisfy two prerequisites: First, it must be absolutely accurate, and second it must be precisely reproducible. To achieve both of these prerequisites, you need trained personnel and regular calibration of the measuring tools. The GHM GROUP Academy provides training for precise measuring. In continuing education events your employees learn from well-instructed personnel everything involved in measuring, controlling, regulating. However, since every measurement can only be as accurate as the device with which the measurement was taken, we also take care of the calibration of your instruments. In our

                                  state-of-the-art, accredited calibration laboratories we test the correctness of temperature, relative humidity, dew point, pressure, air speed, sound pressure, and we test for a wide range of measured variables in the UV/visible/IR area and precisely readjust the devices. Naturally we also offer a repair service and support you with your applications on site.

                              • Industry Sectors

                                  • Automotive & Testing

                                  • Giving way to efficiency and change.

                                    Sensors and measuring technology are the sensory organs of modern production. To not only sharpen them, but also adapt them to rapidly changing production cycles, is one of the most important challenges for efficient industrial production. The GHM GROUP supplies your production with innovative measuring systems that

                                    not only get down to business with particular precision, they also do it with unusual speed. Thus, we offer possibilities that can significantly reduce tooling times in production.

                                  • Energy

                                  • With full power for the energy of the future.

                                    可持续能源,特别是via wind turbines and solar power plants, is one of the most important tasks for the future and it poses major challenges for research, development, industry and operators. Right from the start, we as GHM GROUP have accompanied the development of renewables monitoring plants and ensuring their safe operation. Precise and fast, yet certainly robust, our systems work with the utmost reliability, even under the harshest conditions. Even in situations where standard electronics show weaknesses.

                                    All necessary components, such as analog and digital technology, signal conditioning, and real-time calculation are integrated in our systems. Thus they can also be used autonomously in "stand-alone systems".

                                    One partner for a wide variety of requirements.

                                    For operators of wind farms, keeping downtimes to a minimum is a top priority. Operating times should also be utilised as efficiently as possible. In this regard we support plant operators in many different ways.

                                  • Building Automation

                                  • Lots of space for climate and the environment.

                                    In the construction of buildings the integration of modern measuring technology requires ever more space. The sealed building shells, thermally insulated facades and efficient heating systems and recovery systems present number of new challenges for planners, architects and owners. Atmospheric conditions play an absolutely crucial role in protecting building structure and the interior, particularly in sensitive and highly-frequented spaces, such as libraries or museums, but also in historical buildings.


                                    Whether this involves measuring and regulating the room climate, monitoring moisture and dew point, or alarm functions – we offer you a broad range of specific solutions from a single source. What these solutions all have in common is a high degree of adaptability, scalability of the application, as well as the capability of complex networking. Our sensors enhance early and preventative maintenance and guide you and assist you during planning and design phase.

                                  • Agriculture

                                  • Harvest more success with modern measuring technology.

                                    There is virtually no other industry segment that is so significantly dependent on natural influences as agricultural and forestry. For example, these influences include climate conditions for the breeding and production of agricultural products, as well as the conditions for transport and storage of these products. In the final analysis renewable raw materials are fundamentally perishable and after harvest are subject to considerable risk, for example through mould infestation. The GHM GROUP's modern measuring technology helps you to monitor all relevant parameters and enables you to make the right decisions in a good time.

                                    These parameters include not only measurements of the specific factors for tillage, but also measurements of the temperature and moisture of your stored yields, which are of particular economic significance for prevention of damage due to thermal reactions with moisture. Not least, with the monitoring of technical systems, such as hydraulic systems or also lubricant and coolant monitoring of your agricultural machines, with sensors specially designed for the machine type, the GHM GROUP provides you with precisely the measuring technology with which you harvest your success. As it has been in the past, the modern agricultural and forestry industry is one of the most important growth industries worldwide.

                                  • Food

                                  • Safety outside of the box.

                                    Food products are not produced by gut feeling. They are produced based on hard facts and requirements. Uncompromising cleanliness and hygiene are the basic prerequisites for avoidance of microbiological contamination in the industrial manufacturing and processing of foodstuffs and beverages. Moreover, tight-meshed or continuous inspection ensures the uniform high-quality of your products and guarantees a consistent taste experience for the consumer. In addition, through seamless monitoring of the overall process you provide substantiation of the high hygienic standards of your production, and with documentation of the

                                    measured data, you also place the likelihood of faulty batches on file. After all, quality assurance plays an essential role as part of the overall process. Consequently, the measuring instruments used must satisfy the most rigorous requirements, relative to hygiene and many other factors. As the GHM GROUP, with our approved metrological solutions we offer precisely the right recipes for clean and safe foodstuff production. And thus offer maximum safety, entirely in line with the taste of strict governmental inspectors.

                                  • Machine Building

                                  • Higher efficiency - automatically.

                                    Virtually no other industry imposes such high demands on competitiveness as does the machine building industry. As the technological spearhead of the capital goods industry, it demands the highest degree of customisation for many components. Due to the small size of our company and the resulting speed and flexibility in customization we are capable of responding quickly on machine building industry requirements. With our tailored solutions and longstanding expertise we contribute greatly in increasing productivity of machines and equipment

                                    Our offering includes individual consultancy, tailormade sensors or adaptors and controllers that are adapted to your needs. Our customers benefit from partnering with GHM GROUP by gaining productivity e.g. in faster tool change, automated measuring when clamping workpieces, or automatic monitoring of coolant and lubricants – we hone measurably higher efficiency in running operation for you. We consider successful partnership as a question of technology and speed.

                                  • Transport

                                  • Make way for greater reliability.

                                    In the modern transport sector everything revolves around the efficient conveyance of passengers and goods. Whether road, rail or waterways – we ensure smooth operation with the right measurement and control technology. En route is always the worst place for a technical defect. When your vehicles are on the move, highly-specialised sensors reliably and precisely measure all relevant parameters. Such monitoring ensures that the negative influence of strong vibration and harsh temperatures, as well as aggressive substances or the ravages of time on the environment are kept to a minimum.

                                    With a mixture tried and tested technology and inert materials in a robust design, we measure, control and regulate the coolant and lubricant levels of all important aggregates and signal any deviations, so that failures or downtimes do not even occur. When the task at hand is transport of passengers and goods, the highest virtues of safety, reliability, and on-time arrival/delivery must not at any time fall by the wayside.

                                  • Water Treatment

                                  • Measuring technology as a source of safety.

                                    Availability of clean water is one of the most important basic prerequisites for healthy life in our civilisation. With water flows not only the most elementary basic nutrient, but also a raw material of incredible significance for agriculture and industry. However natural sources are by no means sufficient to ensure a safe and adequate supply. Consequently, modern society is increasingly exhausting the possibilities of modern wastewater cleaning and treatment, in order to keep running the basic supply of water. Naturally, in this regard, health is always the top priority.

                                    However the purity for water must also be ensured for industry. With mobile and stationary analysis devices, at the GHM GROUP we monitor water quality directly from the source as well as in tanks and pipes. In this regard, reliable analysis results and automatic documentation of these results give you precisely the security that you can expect from the most important nutrient and industrial raw material. Those who supply people and industry with water must have cleanly clarified its quality beforehand.