-14.7psig is the gauge pressure of an absolute vacuum.
In standard English: "What does psig mean?" The abbreviation stands for pounds per square inch gauge. PSI is a standard unit of pressure, which may be converted to/from Pascals. "Gauge" here means relative to surrounding atmospheric pressure. So a reading of 100 psig means a pressure of 100 psi *above* the atmospheric pressure, which is around around 14.7 psi at sea level, making 114.7 psi absolute pressure.
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The bottle should be exchanged for a fully charged cylindar.
7 F
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
0.5 psig is equivalent to 13.8 inches of water column.
55 psig +15=70
50 psig is equivalent to 64.7 psi. To convert psig to psi, you simply add the atmospheric pressure at sea level, which is about 14.7 psi.
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.
Psi’s-14.696
10 psig
Using the ideal gas law equation P1V1 = P2V2, with initial pressure (P1) = 10 psig, initial volume (V1) = 30 ft^3, final volume (V2) = 25 ft^3, we can solve for the final pressure (P2). (10 psig * 30 ft^3) / 25 ft^3 = 12 psig, so the new pressure would be 12 psig.
1 bar = 14.5 psig so 3.5 bar = 51 psig (what your significate figures)