There are many Strain Gauge instrumentation circuits available. The type instruments system depends upon the following considerations :
Whether static or dynamic strains have to be measured.
Whether an analog or a digital readout is desired.
Whether output is to be displayed on a recorder for instantaneous reading or for permanent record.
Whether a single channel is required or multi channel measurement is necessary.
Depending upon the requirement a suitable instrumentation may be selected.
The most commonly used circuit for strain measurements is a wheat stone bridge with D.C. excitation. The strain may be measured with the help of a voltmeter. The scale of the voltmeter may be calibrated in terms of strain.
THE SET – UP CONSISTS OF :
** Builtin over load and short circuit proof ± 15 Volt D.C. Supply for amplifier and Digital Panel Meter.
** Input : 230 Volt, 50 Hz.
- Characteristics of Strain Gauge between :
** Resistance and Strain.
Note: There may be any change in specification due to continuous R & D without notice.
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