51
Technical Data
Ex
O
2
H
2
S LC
CO
Measuring range
for methane
0 to 100 %LEL
1)
0 to 100 vol. %
1)
Alkanes from methane to nonane, LEL values according to EN 60079-29-1. When adjusting to pro-
pane, the deviation of the indication in air in the range 80 to 120 kPa can be up to 6 %LEL.
0 to
25 vol. %
0 to 100 ppm
H
2
S
0 to 2000 ppm
CO
2)
2)
Certified for 3 to 500 ppm
Zero error
(EN 45544)
– – –
– – –
2 ppm
6 ppm
Device drift
– – –
– – –
≤
1 % of the
measured
value/month
≤
1 % of the
measured
value/month
Warm-up time
35 seconds
≤
5 minutes
≤
5 minutes
≤
5 minutes
Effect of sensor poisons
Hydrogen sulfide H
2
S,
10 ppm
Halogenated hydrocar-
bons, heavy metals,
gases containing silicone,
sulfur or polymerizable
substances
≤
1 %LEL/
8 hours
Poisoning
possible
– – –
– – –
– – –
– – –
– – –
– – –
Measuring accuracy
[% of the measured value]
≤
5
≤
1
≤
2
≤
2
Standards
(Measuring function for
explosion protection and
measurement of oxygen
deficiency and surplus as
well as toxic gases,
EXAM, Essen, Germany:
BVS 08 ATEX G 002
1)
,
PFG 08 G 001
EN 60079-29-1
3)
EN 50271
3)
The device responds to most combustible gases and vapors. The sensitivities differ depending on the
type of gas. We recommend a calibration using the target gas to be measured. For the range of alka-
nes, the sensitivity decreases from methane to nonane.
EN 50104
(Measure-
ment of oxy-
gen deficiency
and oxygen
surplus)
EN 50271
Type
approval test
applied for
4)
4)
The measuring signals can be affected additively by sulfur dioxide and nitrogen dioxide and negatively
by chlorine.
EN 45544-1/-2
5)
EN 50271
5)
The measuring signals can be affected additively by acetylene, hydrogen and nitrate monoxide.
Cross Sensitivities
6)
6)
A table of the cross sensitivities is contained in the Instructions for Use or the data sheet of the respec-
tive sensor.
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