Troubleshooting
Instruction Manual
Form 5739
February 2002
5–3
Figure 5-5. Field Troubleshooting Flowchart
NOTE:
AFTER FINAL CORRECTIVE ACTION, CHECK LOOP OPERATION.
IF NOT OK, RESTART TROUBLESHOOTING PROCEDURE.
REFER TO REPLACING THE MODULE FINAL ASSEMBLY
IN SECTION 6.
1
TROUBLESHOOTING
FROM THE
CONTROL ROOM
TROUBLESHOOTING
IN THE
FIELD
C0789/IL
Note
The Remote Pressure Reading (RPR)
frequency signal has an amplitude of
0.4 to 1.0 V peak-to-peak. If other
noise (frequency) with a comparable
or greater amplitude is present on the
line, it may make the RPR frequency
signal unreadable.
In-service Troubleshooting
A number of simple checks can be made on the
transducer while the unit is in service. Figure 5-5
shows a troubleshooting flowchart.
1. Make sure that the module cover is tight. The
cover should be hand-tightened and then advanced
1/4 to 1/2 turn (24 to 27 N
S
m) (18 to 20 lbf
S
ft).
Содержание Fisher 3311
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