42 EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
… 4 Preparation for Installation
… Special conditions for the measurement of combustion gases
Commissioning of the gas analyzer
• The sample gas path must be purged with inert gas before
the gas analyzer is commissioned (see Purge sample gas
path and analyzer housing on page 103).
Operation and Maintenance of the Gas Analyzer
• Only model EL3040:
– The housing must be purged using nitrogen.
– Purge gas flow rate 1 to 20 l/h.
– The purge gas flow must be monitored at the purge gas
output.
• The gauge pressure in the sample gas feed path may not up-
scale the maximum value of 100 hPa in standard operation
and a maximum value of 500 hPa in the event of a fault.
The gas analyzer with Magnos28 can be used up to an
absolute pressure of 1200 hPa.
• The leak tightness of the sample gas path must be checked
regularly (see Checking gas path leak tightness on
page 199).
• After the sample gas path within the gas analyzer has been
opened, the following measures (see Measures to take after
each opening of the gas paths within the gas analyzer on
page 199) must be taken:
– The leak tightness of the sample gas path must be
checked.
– The sample gas path must be purged with inert gas
before the power supply is switched on.
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