MKS 246C, Instruction Manual

Page: 58 / 92

Gas Correction Factor Chapter Three: Overview
48
How To Calculate the GCF for Pure Gases
To calculate the Gas Correction Factor for pure gases, use the following equation:
GCF =
(0.3106) (s)
(d ) (cp )
x
x x
where:
GCFx = Gas Correction Factor for gas X
0.3106 = (Standard Density of nitrogen) (Specific Heat of nitrogen)
s = Molecular Structure correction factor where S equals:
1.030 for Monatomic gases
1.000 for Diatomic gases
0.941 for Triatomic gases
0.880 for Polyatomic gases
dx = Standard Density of gas X, in g/l (at 0° C and 760 mm Hg)
cpx = Specific Heat of gas X, in cal/g° C