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Explain absolute Pressure, atmospheric pressure and gauge pressure.

Answer»

Ans :- Absolute pressureis zero-referenced against a perfect vacuum, so it is equal to gaugepressureplus atmospheric pressure. Gaugepressureis zero-referenced against ambient airpressure, so it is equal toabsolute pressureminus atmosphericpressure.

Atmospheric pressure is the force that the weight of air exerts on a surface. It is usually estimated through hydrostatic pressure, which is produced by the total weight of air above the spot to be measured. This type of pressure can be applied in many industrial processes, including corrosion protection.

Gauge pressure is zero-referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure. ... Gauge pressure is measured with the standard atmospheric pressure as the baseline.



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