Flange torque sensor with optical data transmission

Measure torques cost-effectively, reliably and maintenance-free

The measurement specialists at burster have developed an inexpensive torque sensor with an inductive power supply that is also insensitive to EMC interference thanks to optical data transmission. The sensor Model 8675 consists of a rotor flange with a DIN hole pattern and a stator (Fig. 1). This supplies the evaluation electronics for the strain gage in the rotor with energy, receives the measurement data digitised in the rotor via IR LEDs without contact and can transmit torques even when stationary. This eliminates the need for wear-prone slip rings and bearings, and the sensor is completely maintenance-free. Depending on the version, the measuring range is 0 to 100 Nm or 0 to 5000 Nm. The sensor is optimised for the vast majority of applications in mechanical and plant engineering, offering an accuracy of 0.2% or 0.1% (optional). It is the ideal solution for those who require reliability, a long service life and freedom from maintenance, without the need for higher precision. Typical applications include quality monitoring of electric motors and gearboxes, test bench construction and research and development.

This practical sensor is ideal for a wide range of applications

Its extremely compact design allows for seamless integration even in confined spaces. The optical IR transmission offers a distinct advantage for international use, eliminating the need for complex authorisation procedures for different markets. This not only reduces costs but also shortens delivery times. The torque sensor is available as standard with both an analogue output (0-5 V, 0-10 V, ±5 V, ±10 V) and a frequency output (RS422, 24 bit) as well as a USB connection for configuration (Fig. 2, 3). A test and calibration protocol is included in the scope of delivery. Optional standard and special calibration certificates, also with accreditation symbol, are available from the burster calibration laboratory and can be ordered directly if required. The temperature range is between -20 °C and +85 °C, and the maximum operating torque is 300 % of the nominal torque (Fig. 4).

About burster

burster supplies measuring technology ranging from individual sensors to system solutions. Its customers are mainly in mechanical and plant engineering, automation, the automotive industry and its suppliers, electrical and electronic engineering and the chemicals industry. The range includes measuring instruments and testers as well as standard sensors for mechanical and electrical measured values, such as load cells, pressure, torque and displacement sensors, milli- and megohmmeters, and resistance decade boxes. In addition, individual custom OEM solutions are possible, including for many other sectors and future markets such as medical engineering, biotechnology and e-mobility. Many years of experience in designing and building measuring instruments and sensors guarantee optimum solutions every time. Developed and manufactured in Germany, burster sensors, amplifiers and transmitter modules, precision instruments and measuring systems for sensor signal processing are shipped to customers all around the world.