The difference between pressure remaining in an evacuated system and atmospheric pressure. Also know as “gauge vacuum” or “vacuum level”.
The flowing gas pressure at line conditions as read on gauge.
A measure of the force per area exerted by a fluid using atmospheric pressure as a zero reference.
Of a fluid, the pressure as shown by a pressure gauge, i.e., the amount by which the pressure exceeds the atmospheric pressure, the sum of the two giving absolute pressure.
The relative pressure inside a vessel or container (the difference between the inside pressure and atmospheric pressure).
Pressure in pounds per square inch or kPa, above atmospheric pressure; the pressure as indicated by a single Bourdon tube pressure gauge.
The pressure which is measured on pressure gauge, in gauge pressure atmospheric pressure is ignored.
Pressure measured relative to ambient atmospheric pressure.
Is pressure as determined by most instruments and gauges. ( 030)
Pressure reading as shown on a gauge (psig or bar g). The difference between atmospheric pressure and the pressure the gauge is measuring. Also written gage pressure.
is pressure as determined by most instruments and gauges. Barometric pressure must be allowed for to obtain the true or absolute pressure.
pressure exclusive of atmospheric pressure, when diving, gauge pressure is due solely to the water pressure.
The pressure determined by most instruments and gauges, usually expressed in psig. Barometric pressure must be considered to obtain true or absolute pressure.
A measurement of the force per area applied by a fluid with atmospheric pressure as the zero reference.
Pressure measured by a pressure gauge. Pressure above ambient pressure . . psig when the pressure is used in psi units.
The difference between the atmospheric pressure and a variable pressure.
The pressure as measured with reference to atmospheric pressure; where no other indication is given, pressures expressed in 'bar' are assumed to be gauge pressures (ISO 3857/1)
The pressure within a closed container or pipe as measured with a gauge.
The pressure indicated on a pressure gauge, measured in pounds per square inch, and indicated as PSIG; compare with Absolute Pressure, indicated as PSIA.
The pressure above that of atmospheric, 14.7 psi at sea level; absolute pressure minus 14.7 at sea level.
The pressure above (or below) atmospheric. Represents positive difference between measured pressure and existing atmospheric pressure. Can be converted to absolute by adding actual atmospheric pressure value.
The pressure read on a gauge, which does not take atmospheric pressure into account. The abbreviation for this pressure reading is psig.
The pressure differential between atmospheric and that measured in the system.