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│ 7 Appendix
7.5.1.3 Carbon dioxide CO
2
Measuring range
0 – 100 % vol.
Resolution
1 % vol.
Response times
t
90
< 20 s
Temperature range
-20 °C – 40 °C
Measuring error
±1.5 % from end of measuring range
Interference
none
Lifetime, expected
5 years
7.5.2
Electrochemical sensors (EC)
7.5.2.1 Oxygen O
2
Measuring range
0 – 25 % vol.
Resolution
0.1 % vol.
Response times
t
90
< 15 s
Warm-up time
approx. 1 min
Temperature range
-20 °C – 40 °C
Measuring error
±3 % or ±0.3 % vol. (±3 digits)
Interference
none
Lifetime, expected
24 months
7.5.2.2 Hydrogen sulphide H
2
S
Multitec 545
Measuring range
0 – 5000 ppm
Resolution
1 ppm (0 – 100 ppm)
2 ppm (100 - 998 ppm)
0.02 % vol. / 200 ppm (0.10 - 0.5 % vol.)
Response times
t
90
< 30 s
Warm-up time
approx. 1 min
Temperature range
-20 °C – 40 °C
Measuring error
±3 % or ±5 ppm (±5 digits)
±5 ppm (long-term stability)
Interference
at 20°C
100 ppm CO: approx. 1 ppm H
2
S
1000 ppm H
2
: approx. 20 ppm H
2
S
200 ppm NO
2
: -30 ppm H
2
S
Lifetime, expected
24 months
