Pro-Range PR18-A12C 0-1.2 MPa Pressure Transducer - 4-20mA Output, G1/4" Thread

This is a two-wire loop-powered device. Connect the positive supply voltage (10-32V DC) to the red wire, and connect the black wire to the positive input of your PLC or current receiver. The return path from the receiver completes the circuit to the power supply negative, forming the current loop. Ensure the total loop resistance does not exceed 500 ohms.

The PR18-A12C is designed for use with non-corrosive, clean gases and liquids such as air, nitrogen, water, and hydraulic oil. The wetted materials are typically stainless steel. It is not suitable for media that are highly corrosive, contain solid particles, or could crystallize, as these may damage the sensing diaphragm or clog the pressure port.

The output is linearly proportional to the applied pressure. 4mA corresponds to 0 MPa (zero pressure), and 20mA corresponds to 1.2 MPa (full-scale pressure). Therefore, a 12mA signal represents the midpoint: (12mA - 4mA) / (20mA - 4mA) * 1.2 MPa = 0.6 MPa. This linear scaling allows for easy conversion in your PLC or controller software.

Overload pressure (2.5 MPa) is the maximum pressure the sensor can withstand temporarily without causing a permanent shift in its calibration or accuracy specifications. Burst pressure (3.6 MPa) is the maximum pressure the housing and diaphragm can endure before risking mechanical failure or rupture. Operating consistently above the rated 1.2 MPa range is not recommended.