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Pressure measurement is the measurement of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressure and vacuum.
Gauge pressure, also called overpressure, is the pressure of a system above atmospheric pressure. Gauge pressure is zero-referenced against ambient air (or atmospheric) pressure, so gauge pressure readings include the pressure from the weight of the atmosphere.
A pressure gauge is a device used to measure the pressure of a fluid or gas in a closed system. It typically consists of a Bourdon tube, which is a curved tube that is connected to the system being measured. When the pressure inside the system changes, the Bourdon tube flexes and moves a pointer on a dial, indicating the pressure reading.
Definition: Gauge Pressure. Gauge pressure is the pressure relative to atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure, and negative for pressures below it. In fact, atmospheric pressure does add to the pressure in any fluid not enclosed in a rigid container.
A pressure gauge is a measuring instrument used to measure the pressure of various substances, such as gases or liquids. Its main function is to determine the value of relative, absolute or differential pressure. Pressure gauges are indispensable in many fields of industry and science, where pressure control plays a very important role.
Define gauge pressure and absolute pressure; Explain various methods for measuring pressure; Understand the working of open-tube barometers; Describe in detail how manometers and barometers operate
