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11 Technical aspects
Hydrogen sulphide H
2
S sensor data (0 – 2000 ppm)
Measurement principle:
electrochemical
Range:
0 – 2,000 ppm
Response times
(pump instruments):
t
50
< 30 sec
t
90
< 90 sec
The use of probes increases response times!
Warm-up period:
about 1 minute
Lifetime:
-garanteed
24 months
-expected
36 months
Cross-sensitivity at 20 °C:
Gas
Concentration
Display
Ammonia
100 ppm
0 ppm
Carbon dioxide
5,000 ppm
0 ppm
Carbon monoxide
100 ppm
6 ppm
Chlorine
20 ppm
-1 ppm
Ethylene
500 ppm
2 ppm
Hydrogen
1 % vol.
200 ppm
Hydrocyanic acid
10 ppm
1 ppm
Methane
1 % vol.
0 ppm
Nitrogen dioxide
10 ppm
0 ppm
Sulphur dioxide
10 ppm
yes (not defined)
Operating temperature:
-20 °C – +40 °C
Humidity range:
15 – 90 % r.h., non-condensing
