Chromalox Big Red Book

Technical

Temperature Equivalents ( °F and °C) Reference Data Equivalents & Conversions

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

-50 -45 -40 -35 -30 -25 -20 -15 -10 -5

-58 -49 -40 -31 -22 -13

95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200 205 210 215 220 225 230 235

203 212 221 230 239 248 257 266 275 284 293 302 311 320 329 338 347 356 365 374 383 392 401 410 419 428 437 446 455

240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 335 340 345 350 355 360 365 370 375 380

464 473 482 491 500 509 518 527 536 545 554 563 572 581 590 599 608 617 626 635 644 653 662 671 680 689 698 707 716

385 390 395 400 405 410 415 420 425 430 435 440 445 450 455 460 465 470 475 480 485 490 495 500 505 510 515 520 525

725 734 743 752 761 770 779 788 797 806 815 824 833 842 851 860 869 878 887 896 905 914 923 932 941 950 959 968 977

530 535 540 545 550 555 560 565 570 575 580 585 590 595 600 605 610 615 620 625 630 635 640 645 650 655 660 665 670

986 995 1004 1013 1022 1031 1040 1049 1058 1067 1076 1085 1094 1103 1112 1121 1130 1139 1148 1157 1166 1175 1184 1193 1202 1211 1220 1229 1238

675 680 685 690 695 700 705 710 715 720 725 730 735 740 745 750 755 760 765 770 775 780 785 790 795 800 805 810 815

1247 1256 1265 1274 1283 1292 1301 1310 1319 1328 1337 1346 1355 1364 1373 1382 1391 1400 1409 1418 1427 1436 1445 1454 1463 1472 1481 1490 1499

820 825 830 835 840 845 850 855 860 865 870 875 880 885 890 895 900 905 910 915 920 925 930 935 940 945 950 955 960

1508 1517 1526 1535 1544 1553 1562 1571 1580 1589 1598 1607 1616 1625 1634 1643 1652 1661 1670 1679 1688 1697 1706 1715 1724 1733 1742 1751 1760

965 970 975 980 985 990 995

1769 1778 1787 1796 1805 1814 1823 1832 1841 1850 1859 1868 1877 1886 1895 1904 1913 1922 1931 1940 1949 1958 1967 1976 1985 1994 2003 2012 2021

-4 -5 14 23 32 41 50 59 68 77 86

1000 1005 1010 1015 1020 1025 1030 1035 1040 1045 1050 1055 1060 1065 1070 1075 1080 1085 1090 1095 1100 1105

0 5

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90

95 104 113 122 131 140 149 158 167 176 185 194

Values for Interpolation in Above Table

Formula for Converting Temperature Scales Fahrenheit to Celsius

°F = 1.8°C + 32

1°C = 1.8°F 2°C = 3.6°F 3°C = 5.4°F 4°C = 7.2°F 5°C = 9°F

6°C = 10.8°F 7°C = 12.6°F 8°C = 14.4°F 9°C = 16.2°F

1°F = 0.55°C 6°F = 3.33°C 2°F = 1.11°C 7°F = 3.88°C 3°F = 1.66°C 8°F = 4.44°C 4°F = 2.22°C 9°F = 5°C

Celsius to Fahrenheit

°C = 5/9 x (°F - 32)

Fahrenheit to Rankine (absolute) Celsius to Kelvin (absolute)

°R = °F + 460 °K = °C + 273

5°F = 2.77°C Note — All decimals are exact. All decimals are repeating decimals.

Pressure Equivalents

Ft H O (60°F) 2.3086 2

mm Hg. (0°C) 51.715

In. Hg (32°F)

Unit

Lbs/In 2

Kg/cm 2

Atm

Bar

Pascals

1 lbs/in 2 1 kg/cm. 2 1 Atmosphere (atm) 1 Bar 1 Pascal (N/m 2 ) 1 mm Hg. (0°C) 1 in. Hg. (32°F) 1 ft. H 2 0 (60°F) 100 ft H 2 0 (60°F)

1 14.22

0.0703 1 1.0333 1.019716 1.03 x 10 -5 1.35951 0.034532 0.03045 3.0448

0.06804 0.9678 1 0.9869 0.1316 0.03342 0.02947 2.9469

0.06895 0.98066 1.01325 1 0.1333 0.03386 0.02986 2.9859

6,895 98,066 101,326 1 x 10 5 1 13,330 3,386 2,987 298,700

2.036 28.96 29.921 29.53

32.843 33.925 33.49

735.56 760 750.06

14.696 14.504 14.5 x 10 -5

0.000335 0.04465 1.1342 1

1 x 10 -5

1 x 10 -5

7.5 x 10 5

0.000295 0.03937 1 0.88175

1 25.4 22.396

0.01934 0.4912 0.4331

100

88.175

2239.6

43.31

Notes — A. 1 inch of Hg (Mercury) = 13.6 inches of water. B. 1 pound per square inch (psi) = 2.31 feet of water. C. 1 foot of water = 0.4331 pounds per square inch (psi).

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