How do you convert Hg to atmospheric pressure?
The conversion calculation from inches of mercury column to millimetres of mercury column over the vacuum and atmospheric pressure range is as follows:
- 1 mmHg = 133.322 pascals (Pa)
- 1 inHg = 3386.39 pascals (Pa)
- mmHg value x 133.322 Pa = inHg value x 3386.39 Pa.
- mmHg value = inHg value x 25.4.
How do you calculate psia pressure?
The formulas to describe the relationship are: PSIG + 1 atm = PSIA and PSIA – 1 atm = PSIG (where atm is atmospheric pressure). It is easy to calculate PSIA or PSIG or convert between the two.
How do you convert inches to PSI?
An inches of mercury column pressure value can be displayed in pounds per square inch pressure units with the following conversion factor:
- 1 psi = 6,894.76 pascals (Pa)
- 1 inHg = 3386.39 pascals (Pa)
- psi value x 6,894.76 Pa = inHg value x 3,386.39 Pa.
- psi value = inHg value / 2.03602.
Is PSI same as PSIA?
PSI stands for pounds per square inch. PSIA Definition: PSIA stands for pounds per square inch absolute. Absolute pressure is pressure relative to zero or absolute vacuum. You may see PSIA used on engineering documents or P&IDs.
What is the difference between PSI and PSIA?
1 PSI = 6,894.75729 pascals. PSIA is a unit for pressure measured relative to a full vacuum. Its referred to as pounds per square inch absolute. PSIG is one of the most common used and referenced forms of pressure.
How many PSIA are in a HG unit?
›› Quick conversion chart of in Hg to psia. 1 in Hg to psia = 0.49115 psia. 5 in Hg to psia = 2.45577 psia. 10 in Hg to psia = 4.91154 psia. 20 in Hg to psia = 9.82308 psia. 30 in Hg to psia = 14.73463 psia. 40 in Hg to psia = 19.64617 psia. 50 in Hg to psia = 24.55771 psia.
What is the difference between inHg and Psi?
1 inhg to psi = 0.49115 psi. 5 inhg to psi = 2.45577 psi. 10 inhg to psi = 4.91154 psi. 20 inhg to psi = 9.82308 psi. 30 inhg to psi = 14.73462 psi. 40 inhg to psi = 19.64617 psi. 50 inhg to psi = 24.55771 psi. 75 inhg to psi = 36.83656 psi. 100 inhg to psi = 49.11542 psi.
Which is bigger 1 pascal or 1 psi?
1 pascal is equal to 0.00029529980164712 in Hg, or 0.00014503773800722 psi. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches mercury and pounds/square inch. Type in your own numbers in the form to convert the units!
When do you use pounds per square inch ( PSIA )?
Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced. Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure.