SensoTech GmbH is a leading company in the field of process measurement technology based in Barleben, near Magdeburg, Germany. We develop and produce innovative solutions for monitoring and optimizing industrial processes. Our specialization lies in the precise measurement of concentrations, densities, and other parameters in liquids – in real time and directly during the process.

Unlike optical methods, which are influenced by color or turbidity, conductivity-based methods, which are sensitive to electrical conductivity, or density-based methods, which can be disturbed by temperature or gas bubbles, our ultrasonic method is independent of these influences.

The LiquiSonic® measurement technology also contains neither moving parts nor components that can wear out or be consumed. Therefore, after installation, the measurement system is completely maintenance-free and drift-free.

The sensors offer digital signal transmission up to 1000 m and enable continuous inline measurement without sampling.

Our system uses ultrasonic transit time measurement to determine the speed of sound in the liquid. The speed of sound directly correlates with the HMDA concentration and enables measurement accuracies of ±0.05 wt%.The integrated temperature compensation ensures stable results even with fluctuating process conditions.

The system provides measurements in real-time. Based on the measurements, you receive an updated measurement value every second.This fast response time allows for effective process control and early detection of deviations from the desired hexamethylenediamine concentration.

Yes, the LiquiSonic® system can be calibrated for various diamines including ethylenediamine, diethylenetriamine, or other aliphatic and aromatic diamines. Each substance has a characteristic speed of sound concentration curve, which is stored in the software. Multi-component measurements are also possible.

Since the speed of sound, like all other physical quantities, is influenced by temperature, all our LiquiSonic® sensors are equipped with temperature sensors. This allows the influence of temperature on the measurement directly compensated Therefore, it is not necessary to integrate additional temperature sensors.

Our sensors operate reliably in a temperature range from -40 °C to 200 °C and pressures up to 500 bar during the hexamethylenediamine concentration measurement. Through various material options such as stainless steel, Hastelloy, or PFA coatings, more aggressive media can also be measured, and explosion protection for Zone 1 and 2 is also available.

Yes, our sensors are designed for extreme conditions. In addition to the extended temperature and pressure range, we offer custom adaptations such as sensor lengths up to 3000 mm, special alloys for corrosive media, and various protection types, such as optional explosion protection. Each sensor is individually configured according to your requirements configured.

Yes, by combining sound velocity measurement with additional physical quantities (e.g., conductivity), up to 3 components can be determined simultaneously. This allows monitoring of additional additives besides hexamethylenediamine.

The system offers various digital interfaces (e.g., Profibus, Ethernet/IP, Foundation Fieldbus) as well as analog 4-20 mA outputs. The integration is seamless via standardized protocols.

Yes, SensoTech manufactures sensors individually according to customer requirements. All standard flanges are available, any installation lengths (up to at least 1000 mm, further lengths on request), various threads, and special geometries for crystallization containers or small pipelines.

The system is completely maintenance-free. Es gibt keine mechanischen Verschleißteile, Dichtungen oder optische Fenster, die angegriffen werden könnten. Eine regelmäßige Kalibrierung ist nicht erforderlich. Die Sensoren bleiben über Jahre stabil und messen zuverlässig Ihre Hexamethylenediamine concentration.