calibration is completed when the display returns to the Main Menu. The new calibra-
tion value will be displayed after 15 seconds (as per default setting of freeze output).
The calibration should be checked according to the requirements of each application.
6.2 Artificial Calibration of Oxygen Signal
The analyzer is arranged with the possibility to carry out an artificial calibration using
only instrument air. Artificial calibration is carried out as follows:
• Apply instrument air with 20.9 % oxygen to the sensor
• Enter Calibration Menu and select Artificial Calibration. The artificial calibration will
now start calibrating first Span using the instrument air as the reference; then Zero
using the reference Zero point generated by the analyzer.
• The calibration is completed when the analyzer returns to normal reading (i.e. 20.9
displayed on the main menu.)
For the Stack Gas Oxygen Analyzer
With the default configuration, the analyzer is automatically calibrated every 6
hours using the artificial calibration. The interval between two calibrations can be
changed as described in section 5.5.
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