Emerson Rosemount 5408 Reference Manual page 102

Service and troubleshooting
June 2019
Table 7-11: Incorrect Level Readings
(1)
Symptom
Measured level lags during rapid level
changes.
Incorrect level when using still pipe.
Incorrect level when the product surface is
above the 50% level.
102
(continued)
Possible causes
Damping value too high.
Maximum Level Rate value
too low.
Time
Device is not configured for
still pipe measurement.
Incorrect Pipe Inner Diameter
configuration.
Ghost echo problems below
the product surface.
Time
Strong double bounce echo
that is interpreted as the
product surface.
Time
Reference Manual
00809-0300-4408
Recommended actions
If there is a problem with lag during rapid
level changes, consider decreasing the
Damping value, see Damping
Verify Maximum Level Rate configuration.
Enable pipe measurement, see
type.
Verify the configured Pipe Inner Diameter
matches the physical inner diameter.
Enable the Track First Echo function, see
Handling ghost echoes in still
Enable the Double Bounce Handling
function, see Handling strong double
bounce echoes.
value.
Mounting
pipes.
Reference Manual