Figure 8-1: Calibration Menu Structure & Quick guide
For the span calibration gas, clean dry instrument air with oxygen content of 20.9% is
recommended.
Before starting to calibrate the analyzer, check the settings of zero and span gas used in
the Calibration Menu.
• If the value of zero gas used is not correct, select Zero gas used and enter the value
of the zero gas used
• If the value of span gas used is not correct, select Span gas used, and enter the value
of the span gas used.
• Press to go back to the Main Menu.
To calibrate the oxygen signal, do the following steps:
• Introduce zero calibration gas to the sensor, and wait for the zero value reading to
stabilize, e.g. 1.8%. Then enter Calibration Menu and select Zero calibration. The ze-
ro calibration is completed when the analyzer returns to the Main Menu. The new
calibration value will be displayed after 15 seconds (as per default setting of freeze
output).
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