Pressure gages have been around ever since the steam age and differential pressure sensors are hard at work monitoring fluid pressure, flow, level and vacuum.
How Does a Differential Pressure Sensor Work?
Validyne differential pressure sensors operate on the variable reluctance principle. Two coils are mounted normal to the plane of a sensing diaphragm. As the diaphragm is deflected by pressure, the impedance changes in the coils are detected and electronically converted to a voltage or current signal proportional to the applied pressure. The signal is sent directly to a control panel that displays the results or a computer interface for analysis.
Pressure Sensor Types
Gage, absolute and differential pressure sensors are the most commonly used pressure transducer types. A gage pressure sensor measures pressure with respect to ambient atmospheric pressure. Absolute pressure sensors are referenced to a complete vacuum. Differential pressure sensors measure the pressure difference between the two pressure ports.