Section 5 - Operation
Oxygen Monitoring
3. With the sensor exposed only to room air, press the O2 CAL key.
Calibration begins.
4. View the monitor screens to track progress of the calibration.
• During calibration, the following messages are displayed:
Display Area
Messages
Central Alarm Display O2 NOT CAL
O2 ALRM OFF
% OXYGEN Display CALIBRATING
• Following successful calibration, these messages are removed,
and the currently sensed oxygen concentration appears in the
% OXYGEN display. (If the calibration was not successful, the
% OXYGEN display area is blank. See “Unsuccessful Calibration”
in this section for further information.)
Typically, calibration lasts less than 30 seconds. However, the
time may vary depending on the amount of oxygen the sensor
was exposed to before calibration.
Oxygen Exposure
Typical Calibration Time
21% 10 seconds
> 21% up to 50 seconds
5. When the Narkomed 2B has successfully completed calibration, pull
the inspiratory valve dome plug and reinsert the sensor assembly.
5-10-6
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