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PEI/RP1200-17_ <br /> Table B-3. <br /> Vacuum Conversions-In Hg <br /> for Different Units <br /> Use Table B-3 for converting vacuum readings in "in Hg" <br /> to other units. <br /> Inches Mbar Bar <br /> In Hg Water PSIG (gauge (gauge <br /> Column pressure) pressure) <br /> 0 0.00 0.00 0 0.0 <br /> 1 -13.6 -0.49 -34 -0.03 <br /> 2 -27.1 -0.98 -68 -0.07 <br /> 3 -40.7 -1.47 -102 -0.10 <br /> 4 -54.3 -1.96 -135 -0.14 <br /> 5 -67.9 -2.46 -169 -0.17 <br /> 6 -81.4 -2.95 -203 -0.20 <br /> 7 -95.0 1 -3.44 -237 -0.24 <br /> 8 -108.6 -3.93 -271 -0.27 <br /> 9 -122.2 -4.42 -305 -0.30 <br /> 10 -135.7 -4.91 -339 -0.34 <br /> 11 -149.3 -5.40 -372 -0.37 <br /> 12 -162.9 1 -5.89 -406 -0.41 <br /> 13 -176.4 -6.38 -440 -0.44 <br /> 14 -190.0 -6.88 -474 -0.47 <br /> 15 -203.6 -7.37 -508 -0.51 <br /> 16 -217.2 -7.86 -542 -0.54 <br /> 17 -230.7 1 -8.35 -576 -0.58 <br /> 18 -244.3 -8.84 -609 -0.61 <br /> 19 -257.9 -9.33 -643 -0.64 <br /> 20 -271.5 -9.82 -677 -0.68 <br /> 21 -285.0 -10.31 -711 -0.71 <br /> 22 -298.6 1 -10.81 -745 -0.74 <br /> 23 -312.2 -11.30 -779 -0.78 <br /> 24 -325.8 -11.79 -813 -0.81 <br /> 25 -339.3 -12.28 -847 -0.85 <br /> 26 -352.9 -12.77 -880 -0.88 <br /> 27 -366.5 1 -13.26 -914 -0.91 <br /> 28 -380.0 -13.75 -948 -0.95 <br /> 29 -393.6 -14.24 -982 -0.98 <br /> Qpei.org <br />