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5 Maintenance
5.1.9.2 Calibrating the O
2
Electrode in the Operating Point
• Activate Maintenance mode.
NOTICE
Access level 1 or 2 required!
NOTICE
A correct calibration of the O
2
electrode with reference measurement works in the CO
e
con-
tent flue gas as well. (from software version V0.106)
The calibration can be performed by reference measurement using an external measuring de-
vice or by using test gas at a known O
2
concentration. For KS1D type 656R1015 a special test
gas adapter is required (KS1D only).
For the KS1D-HT, a hose connection for calibration gas through which the test gas (40 ... 60
l/h) can be input is available.
A special test gas adapter is not required for this type.
Recommended test gas: 3 vol.% O
2
in N
2
.
NOTICE
When performing a reference measurement using an external measuring device, check if the
measuring device is measuring wet or dry. In the case of devices with an upstream measuring
gas cooler, it always concerns a dry measurement. This also applies to devices which remove
the moisture by means of a chemical substance. The KS1D probe measures wet. The differ-
ence between a wet to dry measurement is evident from the graphic in the appendix under
11.1 Wet/Dry Measurement Deviations, Conversion Table.
NOTICE
Calibration / checking with a reference measurement functions only
with O
2
values < 15 vol. % and > 1 vol. %.
NOTICE
Do not perform an O
2
calibration with calibration gases 15 % O
2
. Otherwise the calibration
values are rejected and the warnings WH003/0 and WH004/0 are indicated.
In the Main Menu, select for probe cali-
bration.
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