Servomex NanoTrace DF-760E, Инструкция по эксплуатации

Страница: 73 / 182

User Interface DF-760E 69
NOTE: When the analyzer is shipped from the factory, the plumbing is purged, filled with
N2 and the purifier fittings are capped.
Installation of the purifier, no matter how quick, will allow ambient air to enter the
plumbing and when gas flow is restored, the air will be sent into the system resulting in an
increase in the moisture reading. As a result it is mandatory that the purifier plumbing be
cycle purged before use.
The analyzer includes a system to automate the purge process by alternately flowing gas
through and around the purifier. The process is repeated numerous times to eliminate all
effects of wetted surfaces due to exposure to ambient air.
Select
Purge Purifier
from the
Diagnostics
screen and Figure 53 will appear. Use the
Next
key to toggle
OK
, and when ready press
Enter
and Figure 54 will appear.
Figure 53: Purge Start
Figure 54: Purifier Purge Time Line
As the timeline progresses, the analyzer is going through a preset sequence of cycles which
alternately flow the process gas through the zero and process legs of the gas panel. During
this time, the analyzer should not be used for process measurements. The purge cycle can
be terminated at any time by hitting the
Esc
key which will bring up Figure 55. Use the
Next
key to toggle between the options and use the
Enter
key to either end the process or,
by canceling, allow it to continue. When the process is complete, control of the analyzer
will be returned to the user.
NOTE: When purging a purifier it is important to use clean process gas that is very low in
moisture and oxygen concentration.