The TorqSense RWT330/340 series from Sensor Technology was designed for limited-space applications and provides noncontact measurement of torque, speed, power, and position of rotating shafts such as machine drives; driveshafts for pumps, fans, and mixers; and the axes of test rigs. Separating the compact sensing head from the control electronics forms a two-part unit that fits into small spaces. The electronics are further from the test shaft, protecting them from harsh conditions such as heat, dampness, noise, and vibration. Piezo-ceramic combs fixed to the shaft distort in proportion to the torque level, creating data signals transmitted via noncontact radio frequency to the control unit, where they are read or transferred to a PC for storage and analysis. Power is supplied via RF coupling, and TorqSense offers a range of up to 10,000 N·m (237,304 lb·ft).