80
7 Appendix
7.5.1.2 Methane CH
4
, propane C
3
H
8
for gas measuring
Type:
Infrared sensor
Measuring range:
0 – 100 % vol.
Measuring error CH
4
:
±3 % vol.
Response times:
– CH
4
– C
3
H
8
t
50
< 9 s
t
90
< 17 s
t
50
< 11 s
t
90
< 22 s
Temperature range:
-20 ºC – +40 ºC
Interference:
All hydrocarbons C
x
H
y
Lifetime:
– Warranted
– Expected
2 years
5 years
Test gases:
– Zero point
– Sensitivity
Fresh air
100 % vol.
7.5.1.3 Carbon dioxide CO
2
for warning ExTox
Type:
Infrared sensor
Measuring range:
– Lower limit
0 – 5 % vol.
0.02 % vol.
Measuring error:
±0.04 % vol. (long-term stability)
As per /4/
Zero point deviation:
0.04 % vol.
Response time:
t
90
< 20 s
Decay time:
t
10
< 14 s
Temperature range:
-20 ºC – +40 ºC
Interference:
None
Lifetime:
– Warranted
– Expected
2 years
5 years
Test gases:
– Zero point
– Sensitivity
Fresh air
2.00 % vol. CO
2
