Torque Sensors
May 2005
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Rotary transformer torque sensors from the company utilize non-contact, rotary transformers for sending excitation voltage to, and receiving measurement signals from, the rotating strain gauge sensor. The maintenance-free, rotary transformer design is said to eliminate the need for replacing worn brushes, as is necessary with conventional slip-ring type rotating torque sensors. The units are said to be an ideal choice for use in torque studies on pumps, electric motors, engine dynamometers, transmissions, and gearboxes. The series 4200 rotary transformer torque sensors offer capacities from 100 to 100,000 in/lb (11 to 11.3 k N-m) full-scale and maximum speeds to 10,000 rpm. The shaft-end, temperature-compensated units feature 2 mV/V output sensitivity and an integral shunt calibration network and are available with an optional foot-mounted housing. PCB Piezotronics, Inc.

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