German EPHY MESS sensor EPHY MESS model EPHY MESS price

EPHY MESS sensors, also known as displacement sensors, are a type of sensor used to detect the distance to an object to perform a preset function, and have been widely applied. Main products include mobile phone proximity sensors and long-distance measurement sensors, which are used in smart belts. Proximity sensors can be classified into optical proximity sensors, infrared proximity sensors, ultrasonic proximity sensors, and others based on their working principles. Most proximity sensors used in mobile phones are infrared proximity sensors, which feature an infrared emitting tube and an infrared receiving tube. When the infrared light emitted by the transmitting tube is received by the receiving tube, it indicates a short distance, requiring the screen to be turned off to prevent accidental operation. When the receiving tube does not receive the infrared light emitted by the transmitting tube, it indicates a long distance, and the screen does not need to be turned off. The working principles of other types of proximity sensors are similar; they determine distance by emitting and receiving a certain substance, such as ultrasonic waves or light pulses.

EPHY MESS sensor industry applications

A torque sensor is a precision measuring instrument for measuring various torques, rotational speeds, and mechanical power. It has 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 of fans, water pumps, gearboxes, and torque wrenches; 3) Detection of torque and power in railway locomotives, automobiles, tractors, aircraft, ships, and mining machinery; 4) Can be used for detection of torque and power in sewage treatment systems; 5) Can be used to manufacture viscometers; 6) Can be used in process industries and flow industries; 7) Can be applied in laboratories, testing departments, as well as 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 of fans, water pumps, gearboxes, and torque wrenches; 3) Detection of torque and power in railway locomotives, automobiles, tractors, aircraft, ships, and mining machinery; 4) Can be used for detection of torque and power in sewage treatment systems; 5) Can be used to manufacture viscometers; 6) Can be used in process industries and flow industries; 7) Can be applied in laboratories, testing departments, as well as production monitoring and quality control;

EPHY MESS sensor classification

1) Non-contact torque sensor In a non-contact torque sensor, the input shaft and output shaft 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, causing a change in magnetic flux density on the splines. This change in magnetic flux density is converted into a voltage signal via a coil. Due to their non-contact operating mode, non-contact torque 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 the passenger car sector. Common types of non-contact torque sensors include strain gauge, magneto-electric, 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 previously used for output signals in contact strain gauge sensors can now be replaced by wireless transmission modules, overcoming wear between slip rings and brush arms and improving measurement accuracy. Magneto-electric 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 sensors 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 and calculate the phase difference to determine the torque value. However, fiber optic sensors are susceptible to environmental influences, and installation and debugging are relatively difficult. Photoelectric torque sensors use photoelectric sensing elements as core components. When torque is applied to the drive shaft, the intensity of light from the source changes accordingly, causing a change in the output current of the photoelectric element. The torque value can be calculated by measuring this change. [3] 2) Strain gauge torque sensor Strain gauge sensors use strain electrical measurement technology for torque measurement. Strain gauges are bonded to the 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 sensor 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 transmits it to the transmission module. After the receiving module receives the data, a decoder translates the data and sends it to the microcontroller, which displays the obtained torque data value via 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 to achieve wireless transmission. 4) Electronic sensor An electronic torque meter is a portable, high-performance shaft power measuring instrument designed for fan and pump testing and on-site energy efficiency evaluation. The electronic torque meter creatively eliminates the cumbersome, complex, and often difficult installation process associated with traditional electromechanical torque sensors in many field environments. It enables real-time measurement of fan and pump motor efficiency, monitors the operational status of fan and pump motors at various stages during use, and provides real-time, authentic, and reliable data for studying the usage status of fan and pump motors. It avoids the impact on test results caused by improper installation of electromechanical torque sensors. The electronic torque meter 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.

EPHY MESS sensor usage precautions

1) During installation, do not operate while powered. Do not directly strike or collide with the sensor. 2) The fastening bolts of the coupling must be tightened, and a protective cover should be added to the outside of the coupling to avoid personal injury. 3) The signal line output must not be grounded or short-circuited 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 daily metrological verification and calibration work, torque standard machines are typically used to calibrate torque sensors. Since torque sensors have high accuracy, usually Class 1 and above, another important factor affecting measurement results in actual work, besides the uncertainty of the torque standard machine itself, is the connection quality 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 will directly affect the accuracy of the measurement result. In existing torque sensor measurement methods, the sensor is usually connected in series with the torque standard machine for calibration, so issues regarding the reliability of the connection quality inevitably arise during the calibration process. In the past, to ensure the stability and firmness of the connection installation, rigid connections were typically used. This method brings many inconveniences to inspectors during assembly and disassembly. Additionally, due to the machining precision of parts and the existence of fit clearances, the coaxiality between the measuring shaft systems changes significantly during actual measurement, seriously affecting the accuracy of the measurement result. Although this defect can be reduced by using laser alignment devices, influenced by various factors and differences in manual installation skills, coaxiality remains a major uncertainty factor in the metrology process during actual loading of the torque sensor.

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