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7.2
Alarm
Adjustable:
yes
Latching:
no
Trigger:
when alarm threshold
AL
is exceeded
Indicator:
– audible signal
– visual signal
–
AL
notification on display
Acknowledge-
ment:
possible for audible signal when alarm threshold
AL
is
exceeded
Reset:
– automatic when level falls below alarm threshold
AL
7.3
Limit values for the device inspection
Interspace
Gas Zero point
Sensitivity
Specification
Deviation
Specification
Deviation
CH
4
0 ppm
±300 ppm
1.00 % vol.
± 30 %
(0.70 – 1.30 % vol.
or
7000 – 13000 ppm)
Gas measuring
Gas Zero point
Sensitivity
Specification
Deviation
Specification
Deviation
CH
4
0.00 % vol.
±1 % vol.
60 % vol.
±3 % vol.
CO
2
0 % vol.
±1 % vol.
40 % vol.
±2 % vol.
CO
0 ppm
±10 ppm
40 ppm
±10 ppm
H
2
S 0 ppm
±10 ppm
180 ppm
±18 ppm
O
2
0 % vol.
±0.5 % vol.
20.9 % vol.
±0.5 % vol.
