36
5
Maintenance
•
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
5.1.6 Activate/deactivate Maintenance
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.
Summary of Contents for LT3
Page 2: ......
Page 14: ...13 3 Product Description 3 2 C Declaration of Conformity...
Page 15: ...14 3 Product Description...
Page 19: ...18 4 Display and Operational Controls 4 2 4 Settings Menu Structure...
Page 22: ...21 4 Display and Operational Controls 4 4 1 Main Menu Password Entry...
Page 79: ...78 11 Appendix...