Univex 5100-02-IT User Manual
Page 45
Model 5100-02-IT Combustible Gas Sensor Module
Page: 43
8.7
APPENDIX G: 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
METHANE
FACTOR
Acetaldehyde 60
Acetic Acid
54
Acetic Anhydride
46
Acetone 52
Acetylene 57
Alkyl Alcohol
51
Ammonia 126
n-Amyl Alcohol
33
Aniline 39
Benzene 41
Biphenyl 25
1,3-Butadiene 56
n-Butane 58
iso-Butane 52
Butene-1 45
cis-Butene-2 48
trans-Butene-2 51
n-Butyl Alcohol
34
iso-Butyl Alcohol
53
tert-Butyl-Alcohol 74
n-Butyl Benzene
31
iso-Butyl Benzene
32
n-Butyric Acid
38
Carbon Disulfide
18
Carbon Monoxide
75
Carbon Oxysulphide
93
Chlorobenzene 34
Cyanogen 89
Cyclohexane 41
Cyclopropane 62
n-Decane 33
Diethylamine 49
Dimethylamine 58
2,3-Dimethylpentane 40
2,3-Dimethylpropane 40
Dimethylsulphide 43
1,4-Dioxane 45
Epichlorohydrin 45
Ethane 68
Ethyl Acetate
51
Ethyl Alcohol
73
Ethylamine 53
Ethyl Benzene
36
Ethyl Bromide
91
Ethyl Chloride
57
Ethylcyclopentane 40
Ethylene 71
Ethylenedichloride 66
Ethyleneoxide 52
GAS
METHANE
FACTOR
Diethyl Ether
46
Dimethoxyethane 42
Dimethyl Ether
63
Dimethylformamide 46
Ethyl Formate
44
Ethylmercaptan 56
n-Heptane 39
n-Hexane 37
Hydrazine 45
Hydrogencyanide 48
Hydrogen 77
Hydrogen Sulfide
41
Methane 100
Methyl Actetate
50
Methyl Alcohol
86
Methylamine 77
Methyl Bromide
90
Methyl Chloride
102
Methylcyclohexane 44
Methylenedichloride 93
Methylethylether 44
Methylethylketone 41
Methyl Formate
67
Methylmercaptan 61
Methylpropionate 51
Methyl n-propylketone
40
Napthalene 34
Nitromethane 34
n-Nonane 31
n-Octane 37
n-Pentane 46
i-Pentane 46
Propane 55
n-Propyl Alcohol
47
n-Propylamine 48
n-Propylchloride 50
Propylene 52
Propyleneoxide 46
iso-Propylether 44
Propyne 42
Toluene 40
Triethylamine 40
Trimethylamine 48
Vinylethylether 42
o-Xylene 36
m-Xylene 39
p-Xylene 39
JP-4 (Jet Fuel)
41
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).