Instruction Manual
748441-D
April 2002
3-18 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model CAT100
3-9 SHUT DOWN
Before switching off the analyzer, it is rec-
ommend to purge the gas lines for about 5
minutes with zeroing gas (N
2
) or adequate
conditioned air. For analyzers with electro-
chemical O
2
detector, purge all analyzer
gas lines with conditioned ambient air be-
fore closing any gas line fittings for trans-
port or storage of the analyzer. The full
procedure for shutting down is as follows:
•
Admit zeroing gas to the respective gas
inlet fitting.
•
Switch on the optional gas pump.
•
Set the flow rate to an allowable rate.
After 5 minutes:
•
Switch off the analyzer.
•
Shut off the gas supply.
•
Close all gas line fittings immediately.