Dräger Narkomed 2B Service Manual page 164

ADJUSTMENT AND CALIBRATION PROCEDURES (continued)
NOTE:
5.6.2.6
5.6.2.7
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The length of time that the sensor takes to calibrate
depends on the gas mixture to which the sensor had been
exposed prior to calibration. If the sensor had been
exposed to 21% oxygen for greater than one minute,
calibration can take as little as 10 seconds. If the sensor
had been exposed to higher concentrations of oxygen,
calibration may last up to 50 seconds. Typically,
calibration will last less than 30 seconds.
When calibration is completed, the CALIBRATING
message will disappear and the currently sensed oxygen
concentration will appear on the data display.
Turn the System Power switch to STANDBY.
5-20
NM2B
Rev. E