Pressure Sensing

Different Types of Pressure Sensors

Pressure Sensors can be found which measure gauge, absolute, differential and vacuum pressures. An absolute pressure sensor measures a pressure relative to a vacuum (0 psi of 0 Pa). A differential pressure sensor meausures the difference between 2 pressures. A gaauge pressure sensor measures the difference between the ambient pressure and pressure in a vessel. A differential pressure sensor can generally be configured in order to measure gauge pressure as well. A vacuum pressure sensor is used to measure pressures below atmospheric pressure (101 kPa or 14 psi). This page describes ways in which gauge or differential pressures can be measured.