gauge pressure

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gauge pressure

The pressure, of a gas or liquid, minus the value of atmospheric pressure.

gauge pressure

The difference between atmospheric pressure and absolute pressure, as read from a differential manometer.
References in periodicals archive ?
The pumping equipment must be able to accurately gage pressures between 2-5 psi.
Sensortechnics' KMA series measures gage pressures of corrosive and aggressive gases and liquids in ranges from 500 mbar to 100 bar (7 to 1,450 psi).