AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.336711 DECEMBER 2001A26.3. Temperature Conversion. Use figure A26.3 to convert temperatures between Celsius and Fahrenheit.Figure A26.3. Temperature Conversion Formulae.C = (F-32) times 5/9F = (C times 9/5) + 32K = C + 273C = degrees CelsiusF = degrees Fahrenheit,K = degrees Kelvin (absolute)A26.4. Net Quantity of Gas Conversion Formulae. Use figure A26.4 to determine the net hazard of acompressed gas by converting PSI of a cylinder into pounds. Use figure A26.5 to determine the molecular weight orspecific gravity required to complete the formula.Figure A26.4. NetQuantity of Gas Conversion Formulae.Formula (1)P= 0.00512 x A x B x CorFormula (2)P= .0001744 x A x B x Mwhere:P= weight of gas in poundsA= pressure in pounds per square inchB= volume of cylinder in cubic feetC= specific gravity of the gasM= molecular weight of the gas moleculeNOTE: Use Formula (1) for calculation using the specific gravity value. Use Formula (2) for calculation using themolecular weight value.A26.4.1. Example for Determining Net Quantity of Gas.The following information is known or determined byexamination of the cylinder. Measure the cylinder’s height from the external base to the valve seat. Measure theexternal diameter (width). Assume the cylinder does not cone at the top.-Example 1.Tank measurements:Height: 50 inchesDiameter = 2 x (radius)Diameter: 9 inchesR (inches) = 9/2 = 4.5Tank contents: CO2Internal Pressure: 900 psiTank VolumeV = p r2hV = p (4.5 inches)2 x (50 inches)= {3181 inches}3 x {1/1728 (Ft3/inches3)}V = 1.841 Ft3P (pounds of gas) = 0.00512 x A x B x C= {0.00512 in2/Ft3} x {900 psi} x {1.841 Ft3} x {1.516}P = 12.9 pounds
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