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5
– Maintenance
49
Gas
Molecular
formula
LEL
1
LSE
2
Vapor
density
Coef. /
CH
4
.
Recom-
mended
calgas
Abbreviation
(French)
Ethyl acetate
C
4
H
8
O
2
2.1 %
11.5 %
3.0
1.35
But/Prop
AET
Acetone
C
3
H
6
O
2.15 %
13 %
2.1
1.55
But/Prop
ACO
Acetylene
C
2
H
2
1.5 %
100 %
0.9
1.1
But/Prop
ACY
Butadiene
C
4
H
6
1.4 %
16.3 %
1.85
1.25
But/Prop
BUD
Butane
C
4
H
10
1.5 %
8.5 %
2.0
1.6
But/Prop
BUT
Butanone
C
4
H
8
O
1.8 %
11.5 %
2.5
1.75
But/Prop
BUN
Dimethylether
C
2
H
6
O
3.0 %
27.0 %
1.6
1.55
But/Prop
DIM
Unleaded petrol
Mixture
1.1 %
6 %
3 to 4
3.0
But/Prop
ESS
Ethanol
C
2
H
6
O
3.3 %
19.0 %
1.6
1.15
But/Prop
ETA
Ethylene
C
2
H
4
2.7 %
34.0 %
0.98
1.0
But/Prop
ETY
G.P.L.
Prop+But
1.65 %
9.0 %
1.85
2.05
But/Prop
GPL
Diesel
Mixture
0.6 %
6.0 %
> 4
5.00
But/Prop
GSL
Natural gas
CH4
5.0 %
15.0 %
0.55
1.05
CH4
GNT
Hexane
C6H14
1.2 %
7.4 %
3.0
2.36
But/Prop
HEX
Hydrogen
H2
4.0 %
75.6 %
0.069
0.80
But/Prop
H2
Isobutane
C4H10
1.5 %
15 %
2.0
1.6
But/Prop
ISB
Isopropanol
C3H8O
2.15 %
13.5 %
2.1
1.6
But/Prop
ISP
Methane
3
CH4
5.0 %
15.0%
0.55
1.00
CH4
CH4
4.4 %
1.14
Methanol
CH3OH
5.5 %
44.0 %
1.1
1.0
But/Prop
MTL
Methylamine
CH3NH2
4.9 %
20.7 %
1.1
2.0
CH4
MAM
Propylene oxide
C
3
H
6
O
2.3 %
37.0 %
2.0
2.0
But/Prop
OPR
Ethylene oxide
C
2
H
4
O
2.6 %
100 %
1.5
2.1
But/Prop
ETO
Pentane
C
5
H
12
1.4 %
8.0 %
2.5
1.70
But/Prop
PNT
Propane
C
3
H
8
2.0 %
9.5 %
1.6
1.3
But/Prop
PRO
Propylene
C
3
H
6
2.0 %
11.7 %
1.5
1.2
But/Prop
PRY
Toluene
C
7
H
8
1.2 %
7.0 %
3.1
2.05
But/Prop
TOL
White spirit
Mixture
1.1 %
6.5 %
> 2
5.0
But/Prop
WSP
Xylene
C
8
H
10
1.0 %
7.6 %
3.7
2.5
But/Prop
XYL
List of pre-programmed combustible gases with coefficients
(1) Lower flammable limit.
(2) Upper flammable limit.
(3) The LEL adopted value for methane varies by country. The monitor integrates two different LEL values for
CH4 (4.4% vol. and 5.0% vol.)
Содержание BM25
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