The TorqSense RWT430/440 Series of noncontact torque sensors from Sensor Technology Ltd., Banbury, U.K. and Pittsford, NY, measure torque, speed, power, and position of rotating shafts, such as machine drives, drive shafts for pumps, fans, and mixers, and the critical axes of test rigs. The sensors use tiny piezoceramic combs fixed to the transducer's shaft that distort in proportion to the instantaneous torque level. The resulting data are transmitted via a noncontact RF coupling that also supplies power to the sensors. The data are transmitted to the control unit where they can be viewed on an alphanumeric display or transferred to a PC for storage and analysis. The sensing head is compact and separated from the electronics.
Sensor Technology Ltd.