Pressure sensors and transducers are instruments that measure the pressure of gases or liquids. Pressure sensors create electrical signals in response to the pressure exerted by the medium, whereas transducers convert these signals into voltage, current, or digital formats for monitoring and managing pressure variations. These devices are extensively utilized in industrial process control, the automotive sector, medical devices, consumer electronics, aerospace, and various other applications to enhance system safety and efficiency.

What Is A Pressure Transducer?

An Introduction to Pressure Transducers and Transmitters.

A pressure transducer, commonly referred to as a pressure transmitter, is an electromechanical device that accurately measures pressure. It detects the applied pressure and generates an electrical signal by integrating mechanical and electrical components. The typical outputs from these transducers are voltage and milliamp signals.

Pressure Transducers Based On Measured Pressure

Absolute Pressure

Absolute pressure transducers measure pressure in relation to a perfect vacuum, using absolute zero as their reference point. A common example is a barometric pressure transducer. Another type includes sealed gauge transducers, which have their signal offset to align with the gauge pressure at the moment they are built.

Gauge Pressure

Gauge pressure transducers measure the pressure relative to local atmospheric pressure. An example is a tire pressure sensor. Another example would be a vacuum sensor, whose signals are reversed so that they signal positive when the measured pressure is below atmospheric pressure.

Differential Pressure

Differential pressure transducers assess the difference between two applied pressures and typically feature a high pressure port and a low pressure port. A common application of differential pressure is in filter monitoring, where an increase in differential pressure indicates that the filter is becoming clogged.