AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 215
Air pressure effect
If the gas analyzer does not have an integrated pressure sensor for air pres-
sure correction, the air pressure value should be checked and reset (see
page 272) as required prior to calibrating the analyzer module:
• if the gas analyzer’s operating site altitude has changed since the last
calibration or
• if the air pressure effect (see page 346) on the measured value is too
high.
Waiting period following manual calibration
If the Output Current Response parameter is set to Hold, current output
is halted for a specific time to allow the measurement value to stabilize after
automatic calibration is ended.
This interval is:
Test gas → Sample gas purge time + 4 x T90 or
Test gas → Sample gas purge time + 1 x T90-1 + 3 x T90-2.
The waiting period is the same as that following automatic calibration (see
page 216).
Calibration data
Setting the calibration data is described in section "Calibration data for
manual calibration" (see page 226).
Analyzer module manual calibration
Manual calibration of an analyzer module is described in section "Analyzer
module manual calibration" (see page 265).
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