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A conversion chart for the units most commonly used to measure vacuum pressure. These include both SI units and Imperial or US customary units of pressure. Created Date
Vacuum Pressure Unit Conversion Micron Torr mmHg (A) bar mBar PSIA PSIG "Hg (A) Barometric "Hg (V) "H 2 0 (A) "H 2 0 (V) Atm kPa % Vacuum 760000 760 1.0131 1013 14.70 0 29.92 0 406.60 0 1 101.38 0 750000 750 1 ... Torr x .03937 = "Hg (A) PSIA x .06895 = bar Torr x .001333 = bar
It also gives the correct answer for absolute pressure, assuming you are measuring psia, which is the pressure relative to absolute zero vacuum. If you are measuring relative to vacuum and want to resolve the pressure relative to the atmosphere, then you should use the form below. in Hg (relative to vacuum) psi (relative to atmosphere)
25 Νοε 2010 · Download and print Vacuum Units Converter Chart. The % of vacuum is a relative value where pressure at normal or standard atmosphere is the base value. pv% = 100% - (pv / patm) 100% (1) where. pv% = vacuum (%) pv = absolute pressure (psia, kPa, bar ..) patm = absolute presure at normal or standard conditions (psia, kPa, bar ..)
Two charts can be found below in Figure 1 and Figure 2. At 40% Vacuum, the absolute vacuum pressure reads 17.95 in Hg while the absolute vacuum pressure is about 5.98 in Hg at 80% vacuum. Similarly in Figure 2, the gauge vacuum pressure is relative to atmosphere pressure (29.92 in Hg).
PRESSURE VACUUM CONVERSION FACTORS Multiply by To Obtain Multiply by To Obtain at 0.967841 atm in Hg (0°C) 0.033421 . atm . atm . 1.0132501 . bar ... psi (dif) cm Hg (0°C) 1.33322 kPa psia 0.068046 atm cm Hg (0°C) 0.1933672 2 psi (dif) psia . 70.306958 . gf/cm . cm Hg (0°C) 2 27.844879
Easily convert units of vacuum with this chart including Torr, mmHg, mtorr/microns, PSI-a, Bar, mbar, mbar/hPa, inH2o, KPA, Pa, inHg, ATM. Click here!
