In-line torque cells maintain system dynamics by offering high, torsional stiffness. They are pre-calibrated and most have an internal calibration system that supplies a calibrated output signal to adjust instrument span in the absence of a known static torque.

The wireless telemetry feature also eliminates support bearings and their maintenance. However, in-line torque systems require cutting the shaft or lengthening the machine train to accommodate the inserted in-line transducer.

Thus, if cutting or lengthening the shaft is not a feasible option, another measuring approach must be employed.

See also: What are the major differences between the various forms of torque measurement?