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the Zeroing procedure. The presence of ambient air in the IRMA airway adapter is of
crucial importance for a successful Zeroing.
Always perform a pre-use check after zeroing the probe.
Whenever an offset in gas values or an unspecified gas accuracy message is displayed.
Allow 10 seconds for warm up of the IRMA CO
2
after power on and after changing the
IRMA airway adapter before proceeding with the Zeroing Procedure. The green LED on
the probe will be blinking for approximately 5 seconds while zeroing is in progress.
6.5 Alarms
The description of the status LED situated on the IRMA probe is as below:
Steady green light System OK
Blinking green light Zeroing in progress
Steady red light Sensor error
Blinking red light Check adapter
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