Absorption Dynamometers

Absorption Dynamometers:

Transmission dynamometers are also called torque meters. They mostly consist of a set of strain-gauges fixed on the rotating shaft and the torque is measured by the angular deformation of the shaft which is indicated as the strain the of the strain gauge. A four arm bridge is used to reduce the effect of temperature, and the gauges are arranged in pairs such that the effect of axial or transverse load on the strain gauges is avoided.

Above figure shows the transmission dynamometer which employs beams and strain gauges for a sensing torque. Transmission dynamometers measure brake power very accurately and are used where continuous transmission of the load is necessary. These are mainly used in automatic units.