Oldham OLCT 20 - Page 26

8 – Technical Specifications
22
Poison resistant catalytic sensor, type VQ1
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
Ethylene
C
2
H
4
2.70
34.00
1.65
1.35
0.90
0.80
G.P.L.
2
Prop+But
1.65
~9.0
1.9
1.00
0.90
Diesel
mixture
0.60
~6.0
3.20
1.70
1.55
Natural gas
CH
4
5.00
15.00
1.05
0.60
0.50
Heptane
4
C
7
H
16
1.10
6.70%
2.20
1.20
1.05
Hexane
4
C
6
H
14
1.20
7.40
2.10
1.15
1.00
Hydrogen
H
2
4.00
75.60
1.00
Isobutane
C
4
H
10
1.50
8.40
1.50
0.80
0.75
Isobutylene
C
4
H
8
1.60
10.00
2.20
1.20
1.05
Isopropanol
C
3
H
8
O
2.15
13.50
1.60
0.85
0.80
Kerosene (JP-4)
C
10
-C
16
0.70
5.00
5.00
2.65
2.40
Methyl methacrylate
C
5
H
8
O
2
2.10
12.50
2.25
1.20
1.10
Methane
CH
4
5.00
15.00
1.00
Methanol (methyl
alcohol )
CH
3
OH
5.50
44.00
1.40
1.15
0.75
0.70
Naphtha
mixture
0.90
5.90%
3.50
1.85
1.70
Nonane
C
9
H
20
0.70
5.60
4.40
2.35
2.10
Octane
C
8
H
18
1.00
6.00
2.70
1.45
1.30
Ethylene oxide
(epoxyethane)
C
2
H
4
O
2.60
100
2.10
1.70
1.15
1.00
Propylene oxide
(epoxypropane)
C
3
H
6
O
1.90
37.00
2.35
1.90
1.25
1.15
Pentane
C
5
H
12
1.40
8.00
2.10
1.15
1.00
Propane
C
3
H
8
2.00
9.5
1.55
0.85
0.75
Propylene
C
3
H
6
2.00
11.70
1.65
0.90
0.80