Instrument Verification

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Instrument With Gage-Factor Control
In the case of a strain indicator with a gage-factor control, the instrument is designed so that , where is the instrument gage factor setting. Then,

  (514.38)

When one arm of the bridge is shunted by a calibration resistor calculated from Eq. (514.38), the instrument should indicate the synthesized strain, . Failure to do so by more than the tolerances on and is indicative of instrument error.

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