Cross Reference Factors

Combustible Gas - Cross Reference Factors for Altair 4X General Purpose Calibration Using the Standard Combustible Sensor and Calibration Cylinder (PN 10045035) Set to 58% LEL

Combustible Gas Multiply Reading By
Acetylene 0.6
Butane 0.7
Cyclohexane

0.9

Diethylether 0.7
Ethane 0.6
Ethanol 0.6
Ethylene 0.5
Gasoline 0.9
n-Hexane 0.9
Hydrogen 0.6
Isopropyl Alcohol 0.9
Methane (5.0 Vol%) 0.5
Methanol 0.5
Pentane Simulant 1.0
Pentane 0.7
Propane (2.1 Vol%) 0.6
Toluene 1.0
Xylene 2.5

Response Notes

1. For an instrument calibrated on Pentane Simulant, multiply the displayed %LEL value by the conversion factor above to get the true %LEL.
2. These conversion factors should be used only if the combustible gas is known.
3. These conversion factors are typical. Individual units may vary by +25% from these values.
4. The results are intended for guidance only. For the most accurate measurements, an instrument should be calibrated using the gas under investigation.

Combustible Gas (with Optional EX-H Sensor) - Cross Reference Factors for Altair 4X General Purpose Calibration Using the Optional Heavy Hydrocarbon Sensor and Calibration Cylinder (PN 10045035) Set to 58% LEL

Combustible Gas Multiply Reading By
Acetone 0.6
Methyl Ethyl Ketone (MEK) 1.0
Nonane 1.5
Xylene 1.6