Appendix I: Combustible Gas Scaling Factors - SMC Networks IT Series Instruction Manual

7.9 APPENDIX I: COMBUSTIBLE GAS SCALING FACTORS

For combustible gas monitoring, a calibration standard of Methane may be used in conjunction with scaling
factors to cause Sentry concentration display and alarm function in %LEL scale of another gas as follows:
GAS
Acetaldehyde
Acetic Acid
Acetic Anhydride
Acetone
Acetylene
Alkyl Alcohol
Ammonia
n-Amyl Alcohol
Aniline
Benzene
Biphenyl
1,3-Butadiene
n-Butane
iso-Butane
Butene-1
cis-Butene-2
trans-Butene-2
n-Butyl Alcohol
iso-Butyl Alcohol
tert-Butyl-Alcohol
n-Butyl Benzene
iso-Butyl Benzene
n-Butyric Acid
Carbon Disulfide
Carbon Monoxide
Carbon Oxysulphide
Chlorobenzene
Cyanogen
Cyclohexane
Cyclopropane
n-Decane
Diethylamine
Dimethylamine
2,3-Dimethylpentane
2,3-Dimethylpropane
Dimethylsulphide
1,4-Dioxane
Epichlorohydrin
Ethane
Ethyl Acetate
Ethyl Alcohol
Ethylamine
Ethyl Benzene
Ethyl Bromide
Ethyl Chloride
Ethylcyclopentane
Ethylene
Ethylenedichloride
Ethyleneoxide
NOTES:
1. Scaling factors are not FMRC approved.
2. Base data source: EEV sensor specification catalog. (EEV claims some data is the result of specific
tests, other data is empirically derived).
METHANE
FACTOR
60
54
46
52
57
51
126
33
39
41
25
56
58
52
45
48
51
34
53
74
31
32
38
18
75
93
34
89
41
62
33
49
58
40
40
43
45
45
68
51
73
53
36
91
57
40
71
66
52
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Model 5100-02-IT Combustible Gas Sensor Module
GAS
Diethyl Ether
Dimethoxyethane
Dimethyl Ether
Dimethylformamide
Ethyl Formate
Ethylmercaptan
n-Heptane
n-Hexane
Hydrazine
Hydrogencyanide
Hydrogen
Hydrogen Sulfide
Methane
Methyl Actetate
Methyl Alcohol
Methylamine
Methyl Bromide
Methyl Chloride
Methylcyclohexane
Methylenedichloride
Methylethylether
Methylethylketone
Methyl Formate
Methylmercaptan
Methylpropionate
Methyl n-propylketone
Napthalene
Nitromethane
n-Nonane
n-Octane
n-Pentane
i-Pentane
Propane
n-Propyl Alcohol
n-Propylamine
n-Propylchloride
Propylene
Propyleneoxide
iso-Propylether
Propyne
Toluene
Triethylamine
Trimethylamine
Vinylethylether
o-Xylene
m-Xylene
p-Xylene
JP-4 (Jet Fuel)
METHANE
FACTOR
46
42
63
46
44
56
39
37
45
48
77
41
100
50
86
77
90
102
44
93
44
41
67
61
51
40
34
34
31
37
46
46
55
47
48
50
52
46
44
42
40
40
48
42
36
39
39
41