An improved strain gage is disclosed.

Further, the apparatus includes a strain gauge directly deposited on the drill string.

By contrast, the resonant beam of the strain gauge responds to induced strain and temperature effects.

Locations on an engine trunnion at which the most repeatable strain occurs during use are determined and a strain gauge is located.

The signal conditioner provides the required excitation voltage to the strain gage elements.

A recoverable, multiple position borehole strainmeter is provided.

A pressure reception plate (21) is disposed to receive the thrust from this feed system, and a strain gauge (28) is fitted to the pressure reception plate (21).

For the torque measurement, the engineers decided using the strain gauge type HBM XY41-3/700.

For the axial force measurement, the engineers chose the strain gauge type XY31-3/350.

The torque of the motor (1) can be detected continously according to the change in resistance of the strain gauge (28) caused by deformation of the pressure reception plate (21).

The deflection of the diaphragm in response to pressure can be measured in any desired known manner such as with strain gauge resistors (32) or through capacitive sensing.

Based on strain-gauge technology, the T21WN uses contactless energy and measurement signal transmission to measure torque.

Sensel Measurement commercializes and designs a large range of strain gage force sensors, the most technology which is used in sensor manufacturing .

Sensel Measurement commercializes and designs a large range of strain gage force sensors, the most technology which is used in sensor manufacturing .