M&C GenTwo PMA1000V2.4, Инструкция по эксплуатации

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Errors during manual calibration procedure
Fig. 79: Manual calibration error
An error occurs during the manual calibration procedure, when the test gas has the wrong
gas concentration or the actual value does not fit into the predefined measuring range of
the gas concentration (calibration range limits).
The label on the green button changes to “Error” and the manual calibration procedure
can not be completed.
In the example above, ambient air was used for the calibration procedure. The calibration
range was predefined from -5.0 to +5.0 vol%. The oxygen concentration in ambient air
does not fit into this predefined calibration range. The calibration procedure could not be
completed.
Fig. 80: Datalogger screen with red calibration symbol
The data logger shows the failed calibration attempt with a red symbol. Tapping the red
calibration symbol makes the screen in Fig. 81 appear.