The bridge circuit of Prob. 10.36 is operated with a digital voltmeter having a very high input impedance. What voltage output will result from a strain of 3.1 μm/m?
Prob. 10.36:
A strain gage has a nominal resistance of 120 ? . The gage is installed in a bridge circuit having equal arm resistances of 120 ? and is operated as a current-sensitive device with a detector resistance of 350 ? . The voltage source is 4.5 V. Calculate the current sensitivity of the device if the gage factor is 1.9.