Pressure is defined as the physical force exerted on an object. The force applied is perpendicular to the surface of objects per unit area.
Pressure Formula
Where P is pressure and F is the normal force applied on
objects
Pressure Unit
SI unit for pressure is the pascal (Pa)
What is gauge pressure.
The pressure of a system above the atmospheric pressure is called gauge pressure.
Gauge pressure can calculated if the absolute and atmospheric pressures are known by using the
Formula: Pgauge = Pabs - Patm
Gauge pressure Example
What is absolute pressure
Absolute pressure is a pressure that is relative to the zero pressure in the empty, air-free space of the universe. This reference pressure is the ideal or absolute vacuum.
Difference between gauge Pressure and absolute Pressure
The pressure of a system above the atmospheric pressure is called gauge pressure where as
Absolute pressure is a pressure that is relative to the zero pressure in
the empty, air-free space of the universe. This reference pressure is
the ideal or absolute vacuum.
What is differential Pressure
Differential-pressure (DP) transmitters measure the difference between two pressures and can be used for measure pressure or level.
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