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OLCT 60
FIXED POINTGAS MONITOR
USER MANUAL
Gas
Chemical
Formula
Isobutene
C4H8
Isopropanol
C3H8O
C10 -
Kerosene (JP4)
C16
Methyl
C5H8O2
Methacrylate
Methane
CH4
Methanol
CH3OH
melange
Naphta
(Mixture)
Nonane
C9H20
Octane
C8H18
Ethylene Oxyde
C2H4O
Propylene oxide
C3H6O
Pentane
C5H12
Propane
C3H8
Propylene
C3H6
Styrene
C8H8
Gasoline lead free
/
Toluene
C7H8
Turpentine Oil
-
Triethyl amine
C6H15N
melange
White Spirit
(Mixture)
Xylene
C8H10
: recommended gas for detector calibration
Table 3: Coefficients for the calibration of catalytic detectors equipped with a standard sensor VQ1
Example:
Calibration of an «acetone» detector with span gas at 1% butane concentration.
Value to be entered for the span gas concentration («GE», step 4b, page 28):
1% (injected butane) x 100 x 0.90 (butane/acetone coefficient) = 60 % LEL
1.5 % (LEL butane)
32
LEL
LSE
Flash
Vapor
point
density
(%)
(%)
(°C)
1,60
10,00
<-10
1,9
2,15
13,50
11,7
2,1
0,70
5,00
> 50
> 4
2,10
12,50
2
3,5
5,00
15,00
-188
0,55
5,50
44,00
11
1,1
0,90
5,90
> 44
> 4
0,70
5,60
31
4,4
1,00
6,00
12
3,9
2,60
100
-20
1,5
1,90
37,00
70
2,0
1,40
8,00
-49
2,5
2,00
9,5
-104
1,6
2,00
11,70 -107,8
1,5
1,1
8,00
31
3,6
1,10
~6,0
21
3 à 4
1,20
7
5
3,1
0,8
6,0
35
4,7
1,20
8
-15
3,5
1,10
6,50
>30
> 4
1,00
7,60
25
3,7
Coefficient
Coefficient -
Coefficient
-
Calibration
Calibration
gas
Calibration
gas
H2
CH4
C4H10
(Hydrogen)
(methane)
(Butane)
2,20
1,80
1,60
1,30
5,00
4,00
2,25
1,80
1,00
1,40
1,15
3,50
2,80
4,40
3,55
2,70
2,20
2,10
1,70
2,35
1,90
1,55
1,25
1,65
1,35
6,30
5,05
1,80
1,45
4,00
3,20
3,50
2,80
2,05
1,65
3,50
2,80
4,00
3,20
Coefficient
-
-
Calibration
gas
gas
C5H12
(Pentane)
1,20
1,05
0,85
0,80
2,65
2,40
1,20
1,10
0,75
0,70
1,85
1,70
2,35
2,10
1,45
1,30
1,15
1,00
1,25
1,15
1,00
0,85
0,75
0,90
0,80
3,35
3,00
0,95
0,90
2,15
1,90
1,85
1,70
1,10
1,00
1,85
1,70
2,15
1,90
NPO60GB
Revision F.2
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