35
5
Maintenance
5.1.9.1 Offset Calibration perform to 21 % O2
Before offset calibration, check whether Rki O
2
value is equivalent to 20
(see menu 211 and
213 in chapter
5.1.4 Reading the Measured Values
Otherwise, proceed as described in chapter
5.1.7 Response of the Internal Resistance Reg-
Fig. 5-1 Display R
ki
Also check the probe voltage U-O
2
. It must be in the range of +10
...
-20
mV.
To perform an offset calibration, the probe must be located in the ambient air and should run
for at least 30 minutes in a fault-free measuring mode.
No access level is required!
NOTICE
In case of the KS1D-HT (type 656R2015), the offset calibration can also be performed in an
installed state whilst combustion is running. For this purpose, air (dry and oil-free air, instru-
ment air or ambient air) must be fed at connection with a volume of 40
...
60
l/h for the duration
of the calibration.
Activate MAINTENANCE!
In the MAIN MENU, select
for the cali-
bration of the probe.
In PROBE CALIBRATION, select
for the
offset calibration.
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...