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Dew point/saturation tableDew point | Water content |
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°C | °F | ppm (vol.) | g/m31) |
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-100 | -148.0 | 0.014 | 0.0000103 | -90 | -130.0 | 0.008 | 0.000119 | -80 | -112.0 | 0.54 | 0.000565 | -70 | -94.0 | 2.57 | 0.00269 | -60 | -78.0 | 10.7 | 0.011 | -55 | -67.0 | 20.8 | 0.021 | -50 | -58.0 | 38.4 | 0.038 | -48 | -54.4 | 49.6 | 0.049 | -46 | -50.8 | 63.0 | 0.061 | -45 | -49.0 | 68.5 | 0.067 | -44 | -47.2 | 80.1 | 0.076 | -42 | -43.6 | 101.5 | 0.097 | -40 | -40.0 | 126.9 | 0.11 | -39 | -38.2 | 137.0 | 0.12 | -38 | -36.4 | 158.0 | 0.14 | -37 | -34.6 | 174.1 | 0.16 | -36 | -32.8 | 197.8 | 0.17 | -35 | -31.0 | 224.0 | 0.19 | -34 | -29.2 | 245.0 | 0.22 | -33 | -27.4 | 274.0 | 0.24 | -32 | -25.6 | 303.4 | 0.26 | -31 | -23.8 | 336.0 | 0.30 | -30 | -22.0 | 374 | 0.33 | -29 | -20.2 | 411 | 0.37 | -28 | -18.4 | 461 | 0.40 | -27 | -16.8 | 511 | 0.45 | -26 | -14.3 | 563 | 0.49 | -25 | -13.0 | 623 | 0.55 | -24 | -11.2 | 689 | 0.59 | -23 | -9.4 | 759 | 0.66 | -22 | -7.3 | 840 | 0.72 | -21 | -5.8 | 922 | 0.80 | -20 | -4.0 | 1 015 | 0.88 | -19 | -2.2 | 1 118 | 0.96 | -18 | -0.4 | 1 231 | 1.05 | -17 | +1.4 | 1 358 | 1.15 | -16 | +3.2 | 1 480 | 1.26 | -15 | +5.0 | 1 630 | 1.38 | -14 | +6.8 | 1 779 | 1.51 | -13 | +8.8 | 1 953 | 1.65 | -12 | +10.4 | 2 140 | 1.79 | -11 | +12.2 | 2 338 | 1.96 | -10 | +14.0 | 2 562 | 2.14 | -9 | +15.8 | 2 798 | 2.33 | -8 | +17.6 | 3 047 | 2.54 | -7 | +19.4 | 3 333 | 2.76 | -6 | +21.2 | 3 632 | 2.99 | -5 | +23.0 | 3 955 | 3.20 | -4 | +24.8 | 4 303 | 3.51 | -3 | +26.6 | 4 690 | 3.81 | -2 | +28.4 | 5 100 | 4.13 | -1 | +30.2 | 5 547 | 4.47 | 0 | +32.0 | 6 020 | 4.84 | +1 | +33.8 | 6 480 | 5.2 | +2 | +36.8 | 6 850 | 5.6 | +3 | +37.4 | 7 487 | 6.0 | +4 | +39.2 | 8 022 | 6.4 | +5 | +41 | 8 595 | 6.8 | +6 | +42.8 | 9 216 | 7.3 | +7 | +44.6 | 9 875 | 7.8 | +8 | +46.4 | 10 584 | 8.3 | +9 | +48.2 | 11 318 | 8.8 | +10 | +50 | 12 114 | 9.4 | +11 | +51.8 | 12 935 | 10.0 | +12 | +53.6 | 13 806 | 10.7 | +13 | +55.4 | 14 800 | 11.4 | +14 | +57.2 | 15 796 | 12.1 | +15 | +59 | 16 791 | 12.8 | +16 | +60.8 | 17 885 | 13.6 | +17 | +62.6 | 19 030 | 14.5 | +18 | +64.4 | 20 396 | 15.4 | +19 | +66.2 | 21 641 | 16.3 | +20 | +68 | 23 020 | 17.3 | +21 | +69.8 | 24 502 | 18.3 | +22 | +71.6 | 26 120 | 19.4 | +23 | +73.4 | 27 736 | 20.6 | +24 | +75.2 | 29 477 | 21.8 | +25 | +77 | 31 219 | 23.0 | +26 | +78.8 | 33 209 | 24.4 | +27 | +80.6 | 35 200 | 25.8 | +28 | +82.4 | 37 312 | 27.2 | +29 | +84.2 | 39 551 | 28.7 | +30 | +86 | 41 791 | 30.3 | +31 | +87.8 | 44 322 | 32.0 | +32 | +89.6 | 46 936 | 33.5 | +33 | +91.4 | 49 675 | 35.6 | +34 | +93.2 | 52 539 | 37.2 | +35 | +95 | 55 472 | 39.6 | +36 | +96.8 | 58 639 | 41.3 | +37 | +98.6 | 62 001 | 43.8 | +38 | +100.4 | 65 487 | 45.8 | +39 | +102.2 | 68 973 | 48.4 | +40 | +104 | 71 761 | 50.7 | +42 | +107.6 | 81 049 | 56.5 | +44 | +111.2 | 89 889 | 62.3 | +45 | +113 | 94 527 | 65.3 | +46 | +114.8 | 99 600 | 68.7 | +48 | +118.4 | 110 681 | 75.5 | +50 | +122 | 120 398 | 82.3 | +55 | +131 | 155 472 | 104.0 | +60 | +140 | 196 517 | 129.5 | +70 | +158 | 307 212 | 196.5 | +80 | +176 | 467 662 | 290.5 | +90 | +194 | 691 542 | 418.0 | +100 | +212 | 1 000 980 | 558.0 |
1) Reference temperature = dew point temperature. Guide values for dead time (sec) per meter of sample gas line| | d | 4 mm | 6 mm | 8 mm | 10 mm | 12 mm | 14 mm | 16 mm | 18 mm | 20 mm |
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Q | | | | | | | | | | | 30 l/h | 1.5 | 3.4 | 6 | 9.4 | 13.5 | 18.4 | 24 | 30.5 | 37.6 | 60 l/h | 0.8 | 1.7 | 3 | 4.7 | 6.8 | 9.2 | 12 | 15.3 | 18.8 | 90 l/h | 0.5 | 1.1 | 2 | 3.1 | 4.5 | 6.1 | 8 | 10.2 | 12.5 | 120 l/h | 0.4 | 0.9 | 1.5 | 2.4 | 3.4 | 4.6 | 6 | 7.6 | 9.4 | 150 l/h | 0.3 | 0.7 | 1.2 | 1.9 | 2.7 | 3.7 | 4.8 | 6.1 | 7.5 | 180 l/h | 0.3 | 0.6 | 1 | 1.6 | 2.3 | 3.1 | 4 | 5.1 | 6.3 | 210 l/h | 0.2 | 0.5 | 0.9 | 1.3 | 1.9 | 2.6 | 3.4 | 4.3 | 5.4 | 240 l/h | 0.2 | 0.5 | 0.8 | 1.2 | 1.7 | 2.3 | 3 | 3.8 | 4.7 | 270 l/h | 0.2 | 0.4 | 0.7 | 1 | 1.5 | 2 | 2.7 | 3.4 | 4.2 | 300 l/h | 0.15 | 0.34 | 0.6 | 0.9 | 1.4 | 1.8 | 2.4 | 3.1 | 3.8 |
d = Inner diameter of the sample gas line Q = Flow rate
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