MERIDIAN
UNIVERSAL GAS DETECTOR
GAS SENSOR INFORMATION
B-5
USE AND DISCLOSURE OF DATA
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prohibited.
B. Divide 50%LEL by 0.58 K-Factor. This equals 86.2%LEL.
C. Thus, the device’s CALGASCONC parameter should be set to 86%LEL when exposed to 50%LEL methane.
See
Section 5.1.3 Configuring the Setup Menu
.
4. After calibrated, the device should read 86%LEL in Isobutylene scale when 50%LEL methane bottle gas is
applied.
Table B-3: K-Factors for Combustible Cat-Bead Sensors - Methane
Gas/Vapor*
K-Factor (Parameter Field)
K-Factor (Methane Ratio)
Acetaldehyde (C
2
H
4
O)
0.64
0.64
Acetone (C
3
H
6
O)
0.60
0.60
Acetylene (C
2
H
2
)
0.63
0.63
Ammonia (NH
3
)
1.43
1.43
Benzene (C
6
H
6
)
0.45
0.45
1,3-Butadiene (C
4
H
6
)
0.45
0.45
n-Butane (C
4
H
10
)
0.52
0.52
Isobutane (C
4
H
10
)
0.45
0.45
Isobutylene (C
4
H
8
)
0.58
0.58
Butyl Acetate (C
6
H
12
O
2
)
0.40
0.40
n-Butyl Alcohol (C
4
H
10
O)
0.45
0.45
Chlorobenzene (C
6
H
5
Cl)
0.38
0.38
Cyclohexane (C
6
H
12
)
0.46
0.46
Diethyl ether (C
4
H
10
O)
0.50
0.50
n-Decane (C
10
H
22
)
0.29
0.29
Ethane (C
2
H
6
)
0.68
0.68
Ethyl Acetate (C
4
H
8
O
2
)
0.46
0.46
Ethyl Alcohol (C
2
H
6
O)
0.63
0.63
Ethylbenzene (C
8
H
10
)
0.41
0.41
Ethylene (C
2
H
4
)
0.63
0.63
Ethylene Oxide (C
2
H
4
O)
0.49
0.49
