Instruction manual

7 - 4
NGA 2000 MLT Hardware
MEASUREMENT/CALIBRATION//SWITCHING OFF
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2005
7.3 Switching Off
Before switching off the analyzer, we recommend first purging all the gas lines for about 5 minutes
with zeroing gas (N
2
) or adequate conditioned air. The full procedure for shutting down is as follows:
❍ Admit zeroing gas at the respective gas inlet fitting.
❍ Set the gas flow to permissible rate.
After 5 minutes have elapsed:
❍ Switch Off by disconnecting the voltage supply.
❍ Shut Off the gas supply.
❍ Disconnect gas lines.
❍ Close all gas line fittings immediately.
SWITCHING OFF
Analyzers with electrochemical EO
2
cell have to be purged with conditioned ambient
air prior to disconnect the gas lines !
Then the gas line fittings have to be closed for transport or depositing analyzer.
Analyzers with electrochemical TEO
2
cell have to be purged with Nitrogen (N
2
) prior to
disconnect the gas lines !
Then the gas line fittings have to be closed for transport or depositing analyzer.