Strain gauge pressure sensor principle instrumentation tools. The majority of strain gauges are foil types, available in a wide choice of shapes and sizes to suit a variety of applications. Mpxv7002 integrated silicon pressure sensor data sheet. Measurement of this strain with a secondary transducer like a strain gauge metallic conductor becomes a measure of the appilied pressure. Explanation of pressure sensor pressure sensor a pressure sensor measures the pressure, typically of gases or liquids. Pressure is an expression of the force required to stop a gas or fluid from expanding, and is usually stated in terms of force per unit area. Strain gauge working principle instrumentation tools. The working principle of strain gauge based pressure transducers. The strain gauge based displacement sensor have introduced. Sensors, transducers strain gauges are in stock at digikey. A field guide to understanding pressure transducers. Hbms extensive strain gauge catalog provides 100 pages of information about our extensive choice of strain gauges ranging from standard strain gauges for experimental stress analysis through special strain gauges to strain gauge accessories you can be sure that you will get the. Output versus pressure differential 4 pressure p1vacuum p2 side identification table nxp designates the two sides of the pressure sensor as the pressure p1 side and the vacuum p2 side.
Pressure transducers and pressure sensors often consist of a spring element on which multiple strain gauges are installed. Strain gauge or strain gage was invented in 1938 by edward e. Pdf a strain gauge based displacement transducer for measurement of the displacement in the range of 0 to 10 mm is reported. How do strain gauge based pressure transducers work. Ruge, in particular, was instrumental in introducing many practical forms of the gage and a variety of transducers that incorporate it as the input sensor. A diaphragm is frequently used as the pressure sensitive measuring body in the lower pressure range, while. A pressure sensor generates a signal related to the pressure imposed. Which strain gauge is the right one for your application. It is one of the significant sensors used in the geotechnical field to measure the amount of strain on any structure dams, buildings, nuclear plants, tunnels, etc. Strain gauge sensors or piezoresistive sensors piezoresistive means pressure sensitive resistance, or a resistance that changes value with applied pressure.