Starting Up the Gas Analyzer 93
Purge the sample gas path
Purge before Start-up
Prior to starting up the gas analyzer and feeding in the sample gas, the
sample gas feed path and, where necessary, the wall-mount housing
must be purged (see page 34).
One re
ason is to ensure that the sample gas path and the wall housing
are free of contamination, e.g. corrosive gases and dust deposits, during
start-up.
Another reason is to prevent any explosive gas/air formations that may
be present in the sample gas feed path or the wall- mount housing from
igniting when the power supply is activated.
Purge gas: Nitrogen
Purging of the gas feed path: Purge gas flow max. 100 l/h,
duration approx. 20 s
Purging of the wall-mount housing: Purge gas flow max. 200 l/h,
duration approx. 1 h
If the purge gas flow is lower than specified, the duration of the purging
must be extended accordingly.
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