AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 137
Adjusting purge gas flow rate
The purge gas flow rate should be set as follows in gas analyzers with the
housing purge capability:
Purge gas flow rate at device inlet max. 20 l/h (constant), purge gas positive
pressure: p
e
= 2 to 4 hPa.
For a purge gas flow rate at the device inlet of 20 l/h, the purge gas flow rate
at the device outlet is approx. 5 to 10 l/h.
Fidas24: Housing purge during operation
A part (approx. 600 to 700 l/h) of the instrument air for the air jet injector is
conducted continuously through the housing as purge air.
Date and time check
A correct date and time setting (see page 183) is required for proper opera-
tion of functions such as automatic calibration and logging of error mes-
sages.
1 Select the Date/Time menu item:
MENU → Configure → System → Date/Time
2 Check and, if necessary, correct the date and time.
NOTE
The gas analyzer is factory-set to the GMT+1 time zone.
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