39
6 Commissioning
• The offset calibration takes place automatically once triggered
• After a successful calibration, the O
2
value is at 21 vol.% O
2
,
whilst the CO
e
value is at 0 ppm.
• Deactivate maintenance mode; see Chapter 6.3.2 Activate/deactivate Maintenance
Mode.
Selecting with the cursor key and
ENTER triggers an offset calibration.
Within 10 s, confirm the setting with ENTER
otherwise the value is not assumed.
The U-O
2
value stabilises to values between
+10 ... -20 mV.
The R
ki
internal probe resistance values
lie between 15 ... 25 .
Display of whether the internal probe
resistance regulation is active!
P
h
Display of the current heating capacity
R
ki
S Display of the setpoint value for the
internal resistance regulation.
O
2
-CO: Evaluates the cross-talk response
between the O2 and CO electrodes.
If the influence is too large (>15 %), the sen-
sor signals overwrite each other. This leads
to measurement faults and triggers Fault
FH007/10 after 30 seconds. A basic influ-
ence always exists due to the common GND
of the electrodes.
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