OLCT 80
GAS TRANSMITTER
USER MANUAL
NPO80GB
Revision F.1
77
Gas
Methane
Pentane
Hydrogen
Ethane
1,47
0,78
Ethanol
1,37
0,63
Ethylene
1,41
0,65
n-Hexane
2,85
1,14
Hydrogen
1,0
Isopropanol
1,84
0,85
JP-4
3,28
1,51
JP-5
3,33
1,53
JP-8
3,48
1,6
Methane
1,0
Methanol
1,27
0,58
n-Pentane
2,17
1,0
Propane
1,9
0,87
Styrene
2,13
0,98
Toluene
2,26
1,04
Xylene
2,8
1,29
Table 2: calibration coefficients for 4F-type combustible sensors
Gas
Molecular
formula
LEL
(% v/v)
UEL
(% v/v)
CH4
coef.
H2 coef.
C4H10
coef.
C5H12
coef.
Ethyl acetate
C
4
H
8
O
2
2.10
11.50
1.65
0.90
0.80
Acetone
C
3
H
6
O
2.15
13.00
1.65
0.90
0.80
Acetylene
C
2
H
2
2.30
100
2.35
1.90
1.25
1.15
Acrylic acid
C
3
H
4
O
2
2.40
8.00
5.00
2.65
2.40
Butyl acrylate
C
7
H
12
O
2
1.20
8.00
3.50
1.85
1.70
Ethyl acrylate
C
5
H
8
O
2
1.70
13.00
3.05
1.65
1.50
Acrylonitrile
C
3
H
3
N
2.80
28.00
1.45
1.20
0.80
0.70
Ammonia
NH
3
15.00
30.20
0.90
0.75
0.50
0.45
Benzene
C
6
H
6
1.20
8.00
4.00
2.15
1.90
1,3-butadiene
C
4
H
6
1.40
16.30
2.55
1.35
1.25
Butane
C
4
H
10
1.50
8.50
1.90
1.00
0.90
Butanol (butyl alcohol )
C
4
H
10
O
1.4
11.3
1.95
1.05
0.95
2-butanone (MEK)
C
4
H
8
O
1.80
11.50
3.90
2.10
1.90
Cyclohexane
C
6
H
12
1.20
8.30
2.00
1.10
1.00
Dimethylether
C
2
H
6
O
3.00
27.00
1.80
0.95
0.90
Dodecane
C
12
H
26
0.60
~6.0
4.00
2.15
1.90
Ethane
C
2
H
6
3.00
15.50
1.50
0.80
0.75
Ethanol
C
2
H
6
O
3.30
19.00
2.15
1.75
1.15
1.05
Ether (diethylether)
(C
2
H
5
)
2
O
1.70
36.00
1.90
1.00
0.90
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