Table 2-2. Calibration Guide for Combustible Gas Sensor
CATEGORY 31: FOR CATALYTIC TYPE 1S NATURAL GAS
To detect the following gases, recalibrate with 0.6% propane
and set the span gas value accordingly:
Acetaldehyde 23 Hydrogen 16
Acetylene 24 MAPP Gas 20
Butadiene, 1, 3 25 Methane 20
Carbon Monoxide 20 Methanol 20
Ethane 24 Methylene Chloride 24
Ethylene 25 Monomethyl Amine 22
Ethylene Dichloride 22 Trigonox B 22
CATEGORY 32: FOR CATALYTIC TYPE 1S PETROLEUM VAPORS
To detect the following gases, recalibrate with 0.6% propane
and set the span gas value accordingly:
1, 1, 1-Trichloroethane 32 Ethylene Oxide 36
Acetic Acid 28 Freon 152A 28
Acetone 37 Gasoline 35
Acrolein 28 Hexane 40
Acrylonitrile 26 Isoprene 33
Allyl chloride 30 Methyl Acetate 34
Benzene 37 Methyl chloride 32
Butane (n) 36 Methyl Propene (2) 29
Butane (iso) 32 Methyl t-Butyl Ether 35
Butanol (iso) 38 Pentane (n) 36
Butene-1 34 Pentane (iso) 36
Butene-2 37 Pentene 35
Butyl Acetate (n) 28 Propane 29
Butylene 33 Propanol (n) 36
Butyraldehyde 30 Propanol (iso) 37
Chlorobenzene 38 Propylene 33
Cyclohexane 37 Propylene Oxide 33
Dimethoxyethane 26 Tetrahydrofuran 30
Dioxane, 1, 4 39 Toluene 39
Epichlorhydrin 33 Trichloroethylene 35
Ethanol 30 Triethylamine 38
Ether, Diethyl 37 Vinyl Acetate 34
Ether, Dimethyl 30 Vinyl Chloride 32
2-7
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