Application Note: Is it a Pressure Transmitter or a Pressure Transducer?

The difference between a pressure transducer and a pressure transmitter depend upon the country providing the pressure sensor, the specific manufacturer, and even the specific industry using pressure sensors. Many end users use the terms pressure transmitter and pressure transducer interchangeably. So how do you know the difference and which one to use?

If a pressure sensor provides a millivolt (such as 2mV per V, 10mV per V or 0-100mV) or non-amplified output it is a pressure transducer.  A pressure sensor with a voltage output (such as 0-5Vdc, 0-10Vdc or 1-5Vdc) is a pressure transducer with an amplified voltage output signal.

A pressure sensor with a current loop output (such as 4-20mA 2-wire or 3-wire, or 3-wire 0-20 mA) is referred to as a pressure transmitter.