SS2100 H
2
S TDLAS Gas Analyzer BA02191C
B-14 Endress+Hauser
26. Reconnect the thermistor connector.
27. Connect the new pressure sensor harness and cable to the circular
connector.
28. Reconnect the optical cable harness.
29. Close the door to the SCS enclosure.
30. Conduct a leak test to determine that the new pressure sensor is not
leaking.
31. Turn the system power on. Refer to the Description of Device
Parameters for this analyzer for “Powering up the analyzer”.
32. Run a validation on the analyzer. Refer to the Description of Device
Parameters for instructions on “Validating the Analyzer”.
a. If the system passes, the pressure sensor replacement is
successful.
b. If the system does not pass, refer to “Service Repair Order”
on page B-25
for instructions.
Periodic SCS Maintenance
The status of the SCS should be checked regularly to confirm proper operation
(pressures, flows, etc.) and detect potential problems or failures before
damage occurs. If maintenance is required, isolate the part of the system to be
serviced by following the appropriate procedure under “Shutting Down the
SCS” on page 4-7.
All filter elements should be checked periodically for loading. Obstruction of a
filter element can be observed by a decreasing supply pressure or bypass flow.
If loading of a filter is observed, the filter should be cleaned and the filter
element replaced. Refer to “To check filters” on page B-16. After observation
for some time, a regular schedule can be determined for replacement of filter
elements.
No other regularly scheduled maintenance should be required for the system.
Do not allow cell to exceed 10 PSIG or damage could occur.
For any questions related to leak testing the pressure sensor,
refer to “Service Repair Order” on page B-25.
Due to the chemical properties of the process samples, care must
be taken to repair or replace components with proper materials of
construction. Maintenance personnel should have a thorough
knowledge and understanding of the chemical characteristics of
the process before performing maintenance on the SCS.
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