There are a variety of strategies for measuring the pressure in a gauge sensor. Most of them use a membrane that is fitted with an electrical component, such as a resistor, whose value varies when flexed. Nowadays, microelectromechanical systems, commonly known as MEMS, are utilized. Small and light structures are etched into silicon that can …
A pressure sensor is a device for pressure measurement of gases or liquids. Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit area. A pressure sensor usually acts as a transducer; it generates a signal as a function of the pressure imposed. For the purposes of this article, such a …
Optical pressure sensors detect a change in pressure through an effect on light. In the simplest case this can be a mechanical system that blocks the light as the pressure increases. In more advanced sensors, the measurement of phase difference allows very accurate measurement of small pressure changes. In an intensity-based optical pressure sensor, an …
The capacitance pressure sensor is a pressure measurement device, which converts an applied pressure into a current signal, Like 4-20mA. Capacitive pressure transducers are used in many control and monitoring applications, such as flow, airspeed, level, pump systems, or altitude. Working Principle A capacitor consists of two parallel conducting plates separated by a small gap. …
Differential pressure sensors are typically packaged with two ports to which pipes can be attached. The pipes are then connected to the system where the measurement is to be made. Industrial pressure sensors may be integrated into a standardized fitting, allowing it to be built into existing pipework. Typically, the two pressures to be measured …
How Does a Differential Pressure Sensor Sense Pressure? Read More »
With a sealed vessel as the reference point, a sensing technology is then applied to the surface of the vessel whose electrical characteristic varies with changes in strain. There are many different approaches to this. One common method is the piezoresistive strain gauge. These embed a resistor, (whose value changes with respect to mechanical strain) …