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Chapter 13: GAS Monitoring (Mainstream)
User Manual
Zeroing is performed by snapping a new IRMA airway adapter onto the IRMA probe, without
connecting the airway adapter to the patient circuit, and then choose a < ZERO> in the ZERO
WINDOW menu.
Special care should be taken to avoid breathing near the airway adapter before or during the
Zeroing procedure. The presence of ambient air in the IRMA airway adapter is of crucial
importance for a successful Zeroing. If a "CO2 ZERO REFERENCE CALIB REQUIRED"
alarm should appear directly after a Zeroing procedure, the procedure has to be repeated.
Always perform a pre-use check after Zeroing the probe.
Warning
Incorrect probe Zeroing will result in false gas readings.
NOTE:
If the adapter is not connected to the IRMA probe, the Zeroing will be impossible and
"CO2 NO ADAPTER" will appear on the screen.
13-19
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