Galvanic Applied Sciences 943-TGX, Руководство по эксплуатации

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Revision 4 68 August 02, 2019
6.2.2 Maintenance Check Out Procedure
It is recommended that this maintenance check be performed once per
week and the Maintenance Record Sheet be completed. The record sheet
can be copied and it is recommended that the completed record sheets are
saved in a secure location. The information on the sheets can provide a
time based record of system operation and may be useful for
troubleshooting.
The following procedure should be performed on a periodic basis and the
Maintenance
Record Sheet
should be completed (Figure 6-1):
a) Observe the present status of the analyzer via the Analysis 1 panel. Record any fault
conditions or abnormal values. Record the displayed values for the cell and probe
temperatures.
b) Turn the analyzer Off Line by clicking the On Line button.
c) Place the analyzer in the back purge state by clicking the
Back Purge
check box. The
concentration output should stabilize to a near zero reading within seconds. Record the
stabilized concentration output values. (This offset from zero will vary based on length of
time since the last calibration cycle, whether manual or automatic).
d) Access the
Spectrum
panel. Observe the raw scan signal and compare the shape of the
scan trace to the standard. Note any extreme deviations from the standard scan trace.
Record the peak value of the trace in approximate A/D counts (±1,000).
e) If the signal peak height is less than 16,000 counts then the signal peak height should be
optimized. This can be done by pressing the Optimize Integ. Time field on the Spectrum
panel.
f) Return to the
Analysis 1
Panel and observe the concentration values (they should be
very close to zero). Verify that there are no faults indicated. It is worthwhile to perform a
manual zero at this time
g) Return the analyzer to
Sample
mode by removing the back purge state. Observe and
record how long it takes for the concentration readings to stabilize at the process value
(typically this should take less than ten (10) seconds). A long response time to a
stabilized sample reading may indicate plugging of the sample system or filter. Record
any observed anomalies and/or valve position adjustments made.
h) Turn the analyzer
On Line
by clicking the
On Line / Off Line
switch.