Absolute Pressure
The sum of the gauge pressure and the atmospheric pressure (PSIA). (Example: 50 PSIG equals 50 plus atmospheric pressure, 14.7 at sea level, so 50 PSIG is the same as 64.7 PSIA at sea level.
The sum of the gauge pressure and the atmospheric pressure (PSIA). (Example: 50 PSIG equals 50 plus atmospheric pressure, 14.7 at sea level, so 50 PSIG is the same as 64.7 PSIA at sea level.