The output of straingauge is millivolts , how should i select my wire to connect the lead terminal of strain gauge to amplifier
In milivolt range make sure there is no thermoelectric effects. Use only one metal for wires and connection.
The resistance of the wires should not be important. Take care for symmetry (electrical, thermal) to suppress common mode noise and thermoelectric effects. https://en.wikipedia.org/wiki/Strain_gauge
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