Answer
Sep 15, 2026 - 07:27 AM
To wire a 2-wire 4-20mA sensor, connect the positive lead of the sensor to the positive terminal of a power supply, typically between 12-24V DC, and connect the negative lead to the positive terminal of the input device (such as a PLC or data acquisition system). Then, connect the negative terminal of the input device back to the power supply's negative terminal, completing the loop circuit.
