Oxygen Sensor Calibration - Dräger Narkomed 2B Service Manual

ADJUSTMENT AND CALIBRATION PROCEDURES (continued)
5.6

Oxygen Sensor Calibration

5.6.1 Zero Calibration
5.6.1.1
5.6.1.2
NOTE:
5.6.1.3
5.6.1.4
5.6.1.5
NOTE:
5.6.1.6
5.6.2 21% Calibration
5.6.2.1
5.6.2.2
5.6.2.3
5.6.2.4
5.6.2.5
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Turn the System Power switch to ON.
Press and release the CONFIG key, then simultaneously
press the CONFIG, 21%, and APNEA ALARM DISABLE
keys to bring up the service menu screen.
For this procedure, the keys to the right of the data
display will function as labeled on the display. For
example: the TREND key functions as the EXIT key.
Deleted
Press the CALIBRATION key to bring up the calibration
menu screen.
Remove the oxygen sensor capsule from its housing and
allow several minutes for the displayed offset readings to
stabilize. (The inspiratory valve dome plug should be in
place.)
The displayed readings should be between 125 and 145,
and the difference between CELL A and CELL B
readings should be no greater than 8.
Press the O2MED key to store the new readings. The
message "O2MED OFFSET STORED" will be displayed.
Press the EXIT key to leave the calibration screen.
Press the EXIT key to leave the service menu screen.
Replace the sensor capsule in its housing, but do not
install the housing in the inspiratory valve dome.
Hold the sensor assembly away from any gas fittings to
ensure that it is exposed only to ambient air, and allow
it to stabilize for several minutes.
Press the 21% key. The message "CALIBRATING" will
appear on the data display.
5-18
NM2B
Rev. L