Convert between the following units of Pressure

Convert between the following units of pressure. Remember that any pressure unit not explicitly specified as either absolute (A) or differential (D) is to be considered gauge.

Also, remember those units which always represent absolute pressure, and have no need for a letter “A” suffix!

• 25 PSIA = ??? atm
• 340 ”W.C. = ??? PSIA
• 0.73 bar (gauge) = ??? ”Hg
• 5.5 atm = ??? torr
• 2,300 cm Hg = ??? ”W.C.A
• 500 m torr = ??? PSIA
• 91.2 cm W.C. = ??? kPa
• 110 kPa = ??? ”W.C.
• 620 mm HgA = ??? torr
• 77 Pa = ??? PSIA
• 1 atm = ??? ”W.C.A
• 270 PSIA = ??? atm

Show Answer

25 PSIA = 1.701 atm
340 ”W.C. = 26.983 PSIA
0.73 bar (gauge) = 21.557 ”Hg
5.5 atm = 4,180 torr
2,300 cm Hg = 12,717.72 ”W.C.A
500 m torr = 0.0096683 PSIA
91.2 cm W.C. = 8.9434 kPa
110 kPa = 441.62 ”W.C.
620 mm HgA = 620 torr (A “trick” question . . .)
77 Pa = 14.711168 PSIA
1 atm = 406.91 ”W.C.A
270 PSIA = 18.367 atm

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Convert between the following units of pressure:

• 71.5 PSIA = ??? PSIG
• 5.03 bar (gauge) = ??? ”Hg
• 101 kPa = ??? PSIA
• 800 torr = ??? PSIG
• 41 ”Hg = ??? ”W.C.
• 2.2 feet Hg = ??? kPa
• 11 PSI vacuum = ??? torr
• 350 ”W.C.G = ??? ”W.C.A
• 66 cm W.C. = ??? ”Hg
• 910 PSIG = ??? atm
• 35 ”W.C. = ??? ”HgA
• 125 PSIA = ??? kPa

Show Answer

• 71.5 PSIA = 56.8 PSIG
• 5.03 bar (gauge) = 148.5 ”Hg
• 101 kPa = 29.35 PSIA
• 800 torr = 0.774 PSIG
• 41 ”Hg = 557.4 ”W.C.
• 2.2 feet Hg = 89.4 kPa
• 11 PSI vacuum = 191.3 torr
• 350 ”W.C.G = 756.9 ”W.C.A
• 66 cm W.C. = 1.911 ”Hg
• 910 PSIG = 62.9 atm
• 35 ”W.C. = 32.5 ”HgA
• 125 PSIA = 760.5 kPa