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Flue Gas Analysis System General Information
TELEDYNE BROWN ENGINEERING
Analytical Instruments
TABLE 1: Detector Response To GASES
COMPOUND LEL* RESPONSE FACTOR
Methane 5.0 1.00
Hydrogen 4.0 0.86
Carbon Monoxide 12.5 0.32
Ethane 3.0 1.20
Ethylene 2.7 1.26
Acetylene 0.5 1.39
Propane 2.2 1.42
Propylene 2.0 1.33
Butane 1.9 1.54
Hexane 1.1 1.50
Cyclohexane 1.3 1.44
Heptane 1.05 1.59
Benzene 1.3 1.50
Pentane 1.5 1.45
Toluene 1.2 1.48
Ethylene oxide 3.6 0.76
Methyl Ethyl 1.8 0.96
Ketone
Methyl Acrylate 2.8 0.59
* Taken from Fire Hazard Properties of Flammable Liquids,
Gases and Volatile Solids, National Fire Protection Agency.
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Figure 5: Combustible Gas Sensor