156
Reference Manual
00809-0100-4026, Rev HA
Section 7: Service and Troubleshooting
November 2014
Service and Troubleshooting
Tank signal clip warning The last Tank Signal was clipped. Check Warning Messages. If MWM
Warning is active, this might indicate a
transmitter error. Contact Emerson
Process Management Service
Department.
No surface echo The Surface Echo Pulse cannot be
detected.
Check if the configuration can be
changed so that the surface echo can
be tracked in this current region.
Predicted level The presented level is predicted.
The surface echo could not be
detected.
See No surface echo above.
Sampling failed The sampling of the last tank signal
failed.
Check Warning Messages.
Invalid volume value The given volume value is invalid. Check Volume Status for details.
Simulation Mode The simulation mode is active. The
presented measurement values are
simulated.
No action needed.
Advanced Simulation
Mode
The advanced simulation mode is
active. The given measurements
are simulated.
To turn off the Advanced Simulation
mode, set Holding Register 3600 = 0
(see “Analog Output calibration” on
page 142).
Tracking Extra Echo The transmitter is in the empty
tank state tracking an extra echo.
See “Extra echo” on page 240 and
page 245.
Bottom Projection The bottom projection function is
active.
See “Tank bottom projection” on
page 240.
Using pipe
measurement
Pipe Measurement is active. No action needed.
Surface close to
registered false echo.
Close to a registered false echo
measurement accuracy may be
slightly reduced.
By using the Register False Echo
function, the transmitter can track the
product surface in the vicinity of
disturbing objects (see “Echo tuning”
on page 83).
Sudden level jump
detected.
This may result from various
measurement problems.
Check the tank to find out what causes
problem tracking the surface.
Message Description Action
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