OPERATING MANUAL OXYGEN MONITORING SYSTEM
OMS 420
36
9.7.9
Calibration AIR
This menu performs the 1 point calibration with AIR (zero gas).
O
2
OK. CO OK or O
2
failed! CO failed!
If calibration fails, an error message will be displayed.
9.7.10
Calibration AIR & GAS
This menu performs the 2 points calibration with combined AIR and GAS (zero gas and span gas).
For the calibration, the use of moistured mixture gas (O
2
, CO and H
2
) is mandatory.
Moisturing the span gas requires the use of water bubblier!
With single component gas CO the calibration is not possible.
If no mixture gas is available, then see chapter 9.7.11.
Calibration of O2 only: set CO cylinder (value) = 0
Æ
no calibration
Calibration of CO only: set O2 cylinder (value) = 0
Æ
no calibration
First calibration must always be the zero calibration with “AIR”
Wait approximately 5 minutes while instrument air is being sup-
plied to sensors to allow signals to stabilize.
Press “CALIB” key
Wait for approximately 3 seconds.
Zero gas (AIR) calibration was successful.
If calibration fails, an error message will be displayed.
Return to setting menu.
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