The following sensors require additional precision resistors, available from GW Instruments: thermistor, RTD, ¼ bridge strain gage, current, resistance. Keithley The 2701 is a very accurate 6½-digit ...

IC 1 is pin-configured to drive a constant current of 400 µA through the grounded sensor, T 1.Driving T 1 with this level of current—“zero-power” operation—keeps the worst-case power that the circuit ...

This work presents the design, implementation, and experimental evaluation of a novel measurement circuit for four-wire resistive sensors, such as RTD thermal sensors. The proposed circuit ...