The full bridge, consisting of four active wire strain gauges attached to the measuring shaft, converts the mechanical magnitude, torque, which causes a relative rotation between the two shaft ends, into a proportional electrical signal.
Measuring electronics are integrated into the shaft. This digitizes the measured value at a high sampling rate and transmits it without contact to the stator. There it is again converted into an analog voltage and normalized. For the nominal torque of ± MN the sensor delivers ± 5 V (± 10 V, see option).
TTL pulses are generated in order to measure the speed of rotation (standard) and the angular displacement (as an alternative to the rotation speed, see option). The power required by the measuring shaft is transmitted inductively, i.e. once again without contact.
A control input can be used to check the function of the transmission of the torque signal. An analog voltage of either 0 V or + 5 V is present at the unloaded analog output of the sensor, depending on the level of the control signal.
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