Troubleshooting Guide - Emerson Rosemount 5408 Reference Manual

Reference Manual
00809-0100-4408, Rev BA
7.3

Troubleshooting guide

If there is a malfunction despite the absence of alerts, see
possible causes and recommended actions.
The troubleshooting guide contains the following symptoms:
Incorrect level readings (see

Troubleshooting the 4-20 mA/HART output (see

Table 7-6. Incorrect Level Readings
(1)
Symptom
Reported level is too high or low.
Level is stuck in measuring range.
Service and Troubleshooting
Table
Possible causes
Incorrect tank geometry
configuration.
Time
Incorrect alignment of the
transmitter.
Disturbing objects in the tank.
Time
Table 7-6
7-6)
Table 7-7)
Recommended actions
Verify the tank geometry parameters are

configured correctly (especially the Reference
Height).
Run Verify Level to adjust level measurement,

see
Analyze the echo curve and check amplitude

thresholds, see
page
Restore default settings and reconfigure the

device.
Verify the transmitter head is correctly aligned,

see
Use the suppress false echoes function to

manage strong disturbance echoes, see
"Suppress false echoes" on page
Analyze the echo curve and check amplitude

thresholds, see
page
Remove the disturbing object.

Change alignment of transmitter head in steps of

about 15 degrees, see
on page
disturbing echoes is decreased using the echo
curve.
Put an inclined metal plate on top of the

disturbing object.
Move the transmitter to another position. Refer

to
installation considerations.
Service and Troubleshooting
and Table 7-7 for information on
"Verify Level" on page 72.
"Set amplitude thresholds" on
96.
"Align transmitter head" on page
"Set amplitude thresholds" on
96.
"Align transmitter head"
37. After each step, check if impact of
Section 3: Mechanical Installation
November 2017
37.
97.
for
87