MSA ORION Manual page 47

Four-Head Gas Detector: MSA Orion
Combustible gas
Acetone
Acetylene
Acrylonitrile *
Benzene
Butane
1,3 Butadiene
n-Butanol
Carbon disulphide *
Cyclohexane
2,2 Dimethylbutane
2,3 Dimethylpentane
Ethane
Ethyl acetate
Ethyl alcohol (ethanol)
Ethylene
Formaldehyde *
Heptane
Hydrogen
n-Hexane
Isobutane
Isobutyl acetate
* These gases can inhibit the sensor. To clear this condition, see the procedure in
use' on page 29.
D.I. Recommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Appendix.fm
Table A.1: LEL correlation factors
Multiply
%LEL
reading by:
1.1
0.7
0.8
1.1
1.0
0.9
1.8
2.2
1.1
1.2
1.2
0.7
1.2
0.8
0.7
0.5
1.1
0.6
1.3
0.9
1.5
WARNING
Correlation factors can only work if the gas has been identified. If in
doubt, always follow the Orion's 10% LEL alarm.
Combustible gas
Isopropyl alcohol
LPG Autogas (butane + propane)
Methane
Methanol
Methyl isobutyl ketone
Methylcyclohexane
Methyl ethyl ketone
Methyl tertiary butyl ether
Mineral spirits
iso-Octane
n-Pentane
Petrol (unleaded)
Propane (LPG)
Propylene
Styrene *
Tetrahydrofuran
Toluene
Vinyl acetate
VM & P naptha
0-xylene
Version 02 Issued February 2011
© Copyright State of NSW (Fire and Rescue NSW) 2011
39
Multiply
%LEL
reading by:
1.1
0.9
0.5
0.6
1.1
1.1
1.1
1.0
1.1
1.1
1.0
1.3
0.8
0.8
1.9
0.9
1.1
0.9
1.6
1.2
Section 4.2: 'After