What is Wheatstone Bridge?

A full resistance two-wire bridge with RTD, power source, zero and sensitivity adjustments balanced at some reference temperature.

Heating or cooling causes a resistance change and discrete circuit unbalance, which indicates the temperature.

Various RTD bridge network connections use 2-, 3-, or 4-wire hook-up arrangements, depending on the accuracy required in the temperature measurement.

These are designed to balance out lead wire resistance between the sensor and the bridge.

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