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Chapter 7. Maintenance
7.4.2 Entering the Background Gas Correction Factor
To change the Background Gas Correction Factor, complete the following steps:
Note: The default setting for the Correction Factor is 1.00.
1. Select the appropriate Correction Factor from Table 10 below.
2. Program the Correction Factor as described in "Entering User Constants" on page 70.
Background Gas
Argon (Ar)
Hydrogen (H
)
2
Helium (He)
Methane (CH
)
4
Ethane (C
H
)
2
6
Propylene (C
H
)
3
6
Propane (C
H
)
3
8
Butene (C
H
)
4
8
Butane (C
H
)
4
10
Butadiene (C
H
)
6
6
Acetylene (C
H
)
2
2
Hexane (C
H
)
6
14
Cyclohexane (C
H
)
6
12
Vinyl Chloride (CH
CHCl)
2
Vinylidene Chloride (C
2
Neon (Ne)
Xenon (Xe)
Krypton (Kr)
Sulfur Hexaflouride (SF
Freon 318 (C
F
)
4
8
Tetrafluoromethane (CF
Carbon Monoxide (CO)
90
Table 10: Background Gas Correction Factor
Up to 1000 PPM
H
F
)
2
2
)
6
)
4
Correction factor
5000-10,000 PPM
0.97
0.96
1.64
1.96
1.72
2.13
1.08
1.09
0.87
0.84
0.91
0.88
0.79
0.76
0.69
0.65
0.68
0.63
0.71
0.66
0.95
0.94
0.57
0.52
0.64
0.58
0.74
0.69
0.77
0.73
1.18
1.23
0.70
0.65
0.83
0.79
0.54
0.49
0.39
0.34
0.62
0.57
0.99
0.99
2.5% to 10%
25%
0.95
0.98
2.38
1.35
2.70
1.39
1.11
1.05
0.81
0.91
0.87
0.93
0.72
0.58
0.60
0.77
0.58
0.76
0.62
0.79
0.93
0.97
0.89
0.67
0.54
0.72
0.65
0.81
0.69
0.83
1.28
1.11
0.61
0.78
0.76
0.88
0.44
0.64
0.30
0.49
0.52
0.71
0.98
0.99
moisture.IQ User's Guide
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