14.7 pounds per square inch absolute (psia) at sea level under standard conditions.
0 psia is used as a reference point for pressure measurements because it represents the absence of pressure, equivalent to a perfect vacuum. By using 0 psia as a reference, pressure measurements are taken relative to this baseline to accurately determine pressure differentials in various systems and processes.
To convert bar to psia (pounds per square inch absolute), you need to add the atmospheric pressure in psia to the pressure in bar. 1 bar is approximately equal to 14.5038 psia (standard atmospheric pressure at sea level).
PSIG refers to pound/force per square inch gauge, while PSI measures the pressure relative to a vacuum. If you want to convert a figure from PSIG to PSI, you would need to add 14.7psi to your PSIG figure, which will give you your PSIA result.
Pounds per square inch absolute (psia) is a unit of pressure that measures the pressure relative to a perfect vacuum. It takes into account the atmospheric pressure at sea level, which is approximately 14.7 psia. This means that a pressure measurement in psia includes both the pressure above atmospheric pressure (gauge pressure) and atmospheric pressure itself.
14.7psia = about 30inhg thus, let 14.7 be 15 for easier calculations if 15 psia = 30 inhg then 1 psia = 30/15 inhg therefore 1 psia = 2 inhg or 1 inhg = 0.5 psia so 10 inhg is about 5 psia hope this helps
14.7 psia represents standard atmospheric pressure, or 1 atm. PSIA is just psi with atmospheric pressure taken into account also.
psia=psig+atmospheric pressure where, atmospheric pressure = 14.7psi therefore psig=psia-atmospheric pressure psig=100-14.7 psig=85.3psig
Psia at sea level under standard conditions is equal to 14.7 pounds per square inch absolute. This value represents the atmospheric pressure exerted at sea level under standard conditions of temperature and pressure.
psia to psig psig - 15 15 - 15= 0 psig
psia IS the abbreviation. It stands for Pounds per Square Inch Absolute. When determining a pressure, you are typically measuring it with something that is subjected to atmospheric pressure (1atm~14psia) just like you and I. So say you inflate your tires to 35 psi and check it with a tire gauge. That reading is the GAUGE pressure, or psig. Typically, gauge pressures will not use the G at the end because people tend to be good enough at noticing that there's a difference between "psi" and "psia" and start to ask questions. The ABSOLUTE pressure is the gauge pressure plus the atmospheric pressure. Expressed in equation form, this looks like: psia = psig + atm -or- psig = psia - atm In the case of a vacuum, where there is less than atmospheric pressure, an absolute gauge will read positive values while a typical gauge will read negative values. The equation still holds true. Example: Absolute pressure = 4 psia 1 atm ~ 14 psia What is the gauge pressure? -10 psig 4 psia - 14 psia = -10 psig
add atmosperic pressure to gage pressure to convert to psia one atm standard = 14.7 psi