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AMI INSPECTOR Oxygen
Maintenance
6.4.
Calibration
The sensing part of the sensor must not be in direct contact with
water!
In the wet flow cell, the atmosphere will be saturated with water va-
por. This atmosphere will produce the most accurate calibration re-
sults.
The required time for a calibration depends mainly on the differ-
ence between temperature and oxygen content in the sample and
in the air. It can take 15 – 20 minutes. This is also the case, if the
electrolyte was exchanged.
As soon as the reading is stable, the microprocessor will store the
calibration data in the memory. The end of the calibration is indicat-
ed on the display.
To perform a calibration proceed as follows:
1
Navigate to menu <Maintenance> /<Calibration>.
2
Press [Enter] to start the calibration and follow the dialog on the
display.
3
Stop the sample flow at with the
flow regulating valve.
4
Unscrew and remove the thread-
ed sleeve [A], see
Electrolyte ex-
change, p. 29
.
5
Remove the oxygen sensor [B]
from the flow cell [C].
6
Dry the sensor membrane and the
flow cell with a soft paper tissue.
3.1.5
Calibration
Close regulating valve
to turn off sample flow.
<Enter> to continue
3.1.5
Calibration
Take sensor out of
flow cell and dry
membrane and sensor
<Enter> to continue
