psia to psig
psig - 15
15 - 15= 0 psig
psia=psig+atmospheric pressure where, atmospheric pressure = 14.7psi therefore psig=psia-atmospheric pressure psig=100-14.7 psig=85.3psig
70 psig
psig
55 psig +15=70
PSIA is Atmospheric pressure determined by what sea level you're at it will differ its weird how it works 30 PSIA is like 15 PSI, that's not exact so don't go by cutting the numbers in half I'll get back to you on the specifics PSI is read just like a tire
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.
psia=psig+atmospheric pressure where, atmospheric pressure = 14.7psi therefore psig=psia-atmospheric pressure psig=100-14.7 psig=85.3psig
add atmosperic pressure to gage pressure to convert to psia one atm standard = 14.7 psi
70 psig
To convert 150.0 psig (pounds per square inch gauge) to psia (pounds per square inch absolute), you need to add the atmospheric pressure, which is approximately 14.7 psi at sea level. Therefore, the absolute pressure is calculated as follows: 150.0 psig + 14.7 psi = 164.7 psia. Thus, 150.0 psig is equivalent to 164.7 psia.
(psi x 6.89476 = kPa). So, 70 psi x 6.89476 = 482.633 kPa
psig
55 psig +15=70
PSIA is Pounds per Square Inch Absolute, as opposed to PSIG which is PSI Gauge. PSIA is absolute pressure. For example, normal atmospheric pressure is about 14.7 PSIA, so a PSIA device connected to atmosphere would read 14.7. PSIG is relative pressure, so if system pressure is 15.7 PSIA, and atmospheric pressure is 14.7 PSIA, then PSIG would be 1.0
PSIG, or pounds per square inch gauge, measures pressure relative to atmospheric pressure. To calculate PSIG, you start with the absolute pressure reading (in PSIA) and subtract the atmospheric pressure (usually around 14.7 psi at sea level). The formula is: PSIG = PSIA - Atmospheric Pressure. If you have a pressure gauge that directly measures PSIG, it provides the gauge pressure without the need for calculations.
No, 0 psig (pounds per square inch gauge) and 14.7 psia (pounds per square inch absolute) are not 14.7 pounds apart; they represent different reference points. Psig measures pressure relative to atmospheric pressure, while psia measures it relative to a perfect vacuum. Since 0 psig means the pressure is equal to atmospheric pressure, it corresponds to 14.7 psia at sea level. Therefore, they are actually the same pressure level.
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