Series 4149 Flange Mount Rotating torque transducers utilize non-contact, rotary transformers for sending excitation voltage to, and receiving measurement signals from, the rotating strain gage sensor. The maintenance-free, rotary transformer design eliminates the need for replacing worn brushes, as is the case with conventional slip ring type rotating torque sensors.
The flange mount units are shorter than shaft mount styles and are said to be an ideal choice for use in dynamometers and in torque studies on fuel pumps, hydraulic motors and pumps, combustion engines, drive shafts, transmissions, fans, and electric motors where axial space is limited.
The Series 4149 rotary transformer torque sensors offer capacities from 5,000 inch-pound to 30,000 inches-pound (565 to 3390 N-m) full scale and maximum speeds to 8,000 rpm. In addition to the torque output signal, an optional pickup provides an output proportional to speed. The units feature high signal-to-noise ratio and high torsional stiffness and are available with optional keyed splined shafts. Custom designed units are available for alternate measurement ranges and speeds. PCB Piezotronics, Inc.