German SOMTEC sensors, SOMTEC models, SOMTEC prices

SOMTEC pressure sensors for level measurement. Submersible hydrostatic level transmitters (level gauges) operate on the principle that the static pressure of the measured liquid is proportional to its height. They use advanced imported isolated diffused silicon sensing elements or ceramic capacitive pressure sensors to convert static pressure into electrical signals. After temperature compensation and linearization, these are converted into standard electrical signals (typically 4–20mA/15VDC).

SOMTEC sensor industry applications

Torque sensors are precision instruments for measuring various torques, rotational speeds, and mechanical power. They have a wide range of applications, mainly including: 1) Detection of output torque and power of rotating power equipment such as motors, engines, and internal combustion engines; 2) Detection of torque and power in fans, water pumps, gearboxes, and torque wrenches; 3) Detection of torque and power in railway locomotives, automobiles, tractors, aircraft, ships, and mining machinery; 4) Detection of torque and power in sewage treatment systems; 5) Use in the manufacture of viscometers; 6) Use in process industries and flow industries; 7) Application in laboratories, testing departments, production monitoring, and quality control. 1) Detection of output torque and power of rotating power equipment such as motors, engines, and internal combustion engines; 2) Detection of torque and power in fans, water pumps, gearboxes, and torque wrenches; 3) Detection of torque and power in railway locomotives, automobiles, tractors, aircraft, ships, and mining machinery; 4) Detection of torque and power in sewage treatment systems; 5) Use in the manufacture of viscometers; 6) Use in process industries and flow industries; 7) Application in laboratories, testing departments, production monitoring, and quality control;

SOMTEC sensor classification

1) Non-contact torque sensors In non-contact torque sensors, the input and output shafts are connected by a torsion bar. The input shaft has splines, and the output shaft has keyways. When the torsion bar twists under the torque from the steering wheel, the relative position between the splines on the input shaft and the keyways on the output shaft changes. The change in relative displacement between the splines and keyways equals the twist of the torsion bar, altering the magnetic flux density on the splines. This change in magnetic flux density is converted into a voltage signal via coils. Due to their non-contact operation, these sensors offer long service life, high reliability, resistance to wear, lower latency, and reduced sensitivity to shaft deflection and axial offset, making them widely used in passenger cars. Common types of non-contact torque sensors include strain gauge, magnetoelastic, fiber optic, and photoelectric sensors. Strain gauge non-contact sensors utilize wireless transmission technology. With advancements in technology and wireless transmission, the conductive slip rings and brush arms used for output signals in contact strain gauge sensors can be replaced by wireless transmission modules. This overcomes wear between slip rings and brush arms, improving measurement accuracy. Magnetoelastic torque sensors operate on the principle of magneto-electric conversion, analyzing the phase difference between two output electromotive force signals to measure torque. They are mainly divided into closed-magnetic-circuit and open-magnetic-circuit sensors. Fiber optic torque sensors primarily use light reflection and phase difference principles. They read light signals reflected from two corresponding positions on the shaft, calculate the phase difference, and thereby determine the torque value. However, fiber optic sensors are susceptible to environmental influences and are relatively difficult to install and debug. Photoelectric torque sensors use photoelectric sensing elements as core components. When torque is applied to the drive shaft, the intensity of light emitted by the source changes accordingly, causing a change in the output current of the photoelectric element. Measuring this change allows calculation of the torque value. [3] 2) Strain gauge torque sensors Strain gauge torque measurement employs strain gauge electrical measurement technology. Strain gauges are bonded to an elastic shaft to form a measurement bridge. When the elastic shaft undergoes slight deformation due to torque, the resistance of the bridge changes. This change in resistance is converted into an electrical signal change, thereby achieving torque measurement. The sensor performs the following information conversion: it consists of an elastic shaft, a measurement bridge, an instrumentation amplifier, and an interface circuit. 3) High-performance wireless sensors High-performance wireless torque sensors combine sensors with wireless communication technology to achieve wireless data transmission. The torque electrical signal is amplified and undergoes A/D conversion by a microcontroller-controlled signal processing circuit. An encoder then encodes the collected digital data and sends it to a transmission module. Upon receiving the data, the receiving module's decoder translates the data and sends it to the microcontroller, which displays the obtained torque data value on an LED. The sensor data acquisition and transmission circuit consists of the torque sensor, signal processing section, microcontroller, and wireless transmission circuit. The torque sensor transmits the strain electrical signal generated by the resistance strain gauges to the signal processing circuit. The signal processing section extracts and amplifies the sensor's analog signal and performs analog-to-digital conversion. The microprocessor controls the operation of various components in the system and processes the digital signals. Under the control of the microprocessor, the wireless transmission circuit uses an encoder to encode and process the collected information data, which is then transmitted by the emission module, achieving wireless transmission. 4) Electronic sensors Electronic torque meters are portable, high-performance shaft power measurement instruments designed for fan and pump testing and on-site energy efficiency evaluation. Innovatively abandoning the cumbersome, complex, and often impractical installation process of traditional electromechanical torque sensors in many field environments, electronic torque meters enable real-time measurement of fan and pump motor efficiency. They monitor the operational status of fan and pump motors at various stages during use, providing real-time, authentic, and reliable data for studying their usage conditions. This avoids the impact of improper installation of electromechanical torque sensors on test results. Electronic torque meters can completely replace the shaft power measurement function of traditional torque sensors and obtain the real-time efficiency of fan and pump motors, providing a rigorous and scientific evaluation method for energy saving in fan and pump units.

SOMTEC sensor usage precautions

1) During installation, do not operate while energized. Do not directly strike or collide with the sensor. 2) Tighten the coupling's fastening bolts securely. Install a protective cover on the outside of the coupling to prevent personal injury. 3) The signal output must not be shorted to ground or to the power supply. The output current must not exceed 10mA. The shield layer of the shielded cable must be connected to the common terminal (power ground) of the +15V power supply. 4) In routine metrological verification and calibration work, torque sensors are typically calibrated using torque standard machines. Since torque sensors have high accuracy, usually Class 1 and above, another important factor affecting measurement results in actual practice, besides the uncertainty of the torque standard machine itself, is the quality of the connection between the sensor and the torque standard machine. Especially in the calibration of high-precision torque sensors, when not considering the uncertainty of the torque standard machine itself, the quality of the connection directly affects the accuracy of the measurement results. In existing torque sensor measurement methods, sensors are usually connected in series with the torque standard machine for calibration, so issues regarding the reliability of the connection quality inevitably arise during calibration. In the past, to ensure the stability and firmness of the connection installation, rigid connections were typically used. This method caused many inconveniences for inspectors during assembly and disassembly. Additionally, due to the machining precision of parts and the presence of fit clearances, the coaxiality between the measurement shaft systems changed significantly during actual measurement, seriously affecting the accuracy of the results. Although this defect can be reduced using laser alignment devices, due to various influencing factors and differences in manual installation skills, coaxiality remains a significant source of uncertainty in the metrological process during actual loading of the torque sensor.

Weidou Intelligent Technology specializes in selling German SOMTEC sensors, SOMTEC proximity sensors, SOMTEC distance sensors, SOMTEC vision sensors, SOMTEC displacement sensors, SOMTEC load cells, SOMTEC speed sensors, SOMTEC photoelectric sensors, SOMTEC position sensors, SOMTEC angle sensors, SOMTEC tactile sensors, SOMTEC temperature sensors, SOMTEC pressure sensors, SOMTEC flow sensors, SOMTEC level sensors, SOMTEC motion sensors, and SOMTEC process sensors. Original imports from Germany. Welcome inquiries and orders from users.