39
5 Maintenance
5.1.9.3 Perform a Calibration of the CO/H
2
Electrode
• Activate maintenance mode.
NOTICE
Access level 1 or 2 required!
The calibration can be performed by reference measurement using an external measuring de-
vice or using test gas in combination with a testing device (type 650R1015) of test gas at a
known CO
e
concentration.
For KS1D type 656R2000, a special adapter for test gas is necessary. (For the required test
gas adapter for the KS1D (Type 656R2000), see Chapter 5.1.10 Checking/Calibrating with
Test Gas).
For the KS1D-HT (Type 656R2015), a hose connection for calibration gas through which the
test gas (40 ... 60 l/h) can be input is available.
Recommended test gas: 3 vol.% O
2
, 200 ppm CO, 100 ppm H
2
, in N
2
CO
e
value to be set: 300 ppm
A test gas without O
2
cannot be used for the calibration. The test gas must always contain O
2
in the % area.
NOTICE
Calibration / checking with a reference measurement functions only with CO
e
values
>100 ppm.
The probe is now ready for operation.
Deactivate maintenance mode; see Chapter 5.1.6 Activate/deactivate Maintenance Mode.
In the main menu, select for the calibra-
tion of the probe.
In PROBE CALIBRATION, select for
CO
e
calibration.
With the keys , , , change the
CO
e
values.
Within 5 s, confirm the calibration with
otherwise the calibration is not assumed.
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