
43
8015383/ZUQ7/V1-3/2020-06 | SICK
O P E R A T I N G I N S T R U C T I O N S | TRANSIC151LP
Subject to change without notice
SETTING AMBIENT PARAMETERS
5
Fig. 31: Table to convert temperature and relative humidity to absolute humidity
0511-086
Setting the CO
2
concentration in background gas
The effect of CO
2
on the measured O
2
value is so small that in most circumstances CO
2
compensation is not necessary. The CO
2
dependency is expressed in terms of relative CO
2
concentration (percent per volume CO
2
).
Setting the carbon dioxide content for compensation
Enter using the keypad,
content in process gas (CO2)”, page 38.
Influence of further background gases
For further information on the influence of further background gases on oxygen
measurement,
see “Influence of background gases on oxygen measurement”, page 80
.
Effect of humidity on measured O
2
values
(% of measured value)
T °C
% r.h.
g/m
3
H
2
O
Dependency
Dilution
−
20
50
0.5
0.0
−
0.1
−
20
90
1.0
0.0
−
0.1
0
50
2.4
−
0.1
−
0.3
0
90
4.4
−
0.2
−
0.5
25
50
11.5
−
0.4
−
1.6
25
90
20.7
−
0.7
−
2.8
40
50
25.6
−
0.9
−
3.6
40
90
46.0
−
1.6
−
6.6
60
50
64.9
−
2.1
−
9.8
60
90
116.8
−
3.6
−
17.7
80
50
145.5
−
4.2
−
23.4
80
90
262.0
−
6.3
−
42.1
NOTE:
The gas pressure value must be specified for CO
2
compensation.