Ascenta PW618 Pressure Sensor - 0-20 bar Gauge, 4-20mA Output, Hirschman Connector, M20x1.5 Port

The PW618 uses a standard two-wire, loop-powered 4-20mA configuration. Connect the positive supply voltage (8-30V DC) to one wire of the Hirschman connector, and the other wire to your PLC or receiver's analog input. The sensor modulates the current loop to represent the measured pressure, with 4mA typically corresponding to 0 bar and 20mA to 20 bar.

Yes, the sensor's wetted parts and housing are constructed from SUS 304 stainless steel, offering good corrosion resistance against many industrial media. The electrical connection is protected by an IP65-rated Hirschman connector, making it resistant to dust and water jets. However, compatibility with specific aggressive chemicals should be verified based on the media's properties.

Gauge pressure measures pressure relative to the local atmospheric pressure. The Ascenta PW618 is specifically a gauge pressure sensor, meaning its reading is zero when the pressure port is open to the atmosphere. This is distinct from absolute pressure (referenced to a vacuum) or differential pressure (the difference between two ports). It is ideal for tank level, pump discharge, or system pressure monitoring.

Not directly. The PW618 requires an 8-30V DC supply to power its internal circuitry and generate the 4-20mA signal. To interface with a 3.3V/5V microcontroller, you will need an external 24V power supply for the sensor loop and a separate 250-ohm precision resistor (or signal conditioner) to convert the 4-20mA current into a 1-5V voltage that the microcontroller's ADC can read.