Emerson Rosemount 3408 Reference Manual page 72

Service and troubleshooting
September 2022
Level is stuck in full tank
Figure 7-3: Symptom
A. Level
B. Time
C. Actual level
D. Reported level
Possible cause
Disturbing object near the antenna.
Recommended actions
•
•
•
•
•
Possible cause
Product build-up on the antenna.
Recommended actions
•
Related information
Suppressing false echoes
Read the echo curve
Amplitude threshold
Change the upper null zone
Installation considerations
72
A
C
D
Use the suppress false echoes function to manage strong disturbance echoes.
Analyze the echo curve and check amplitude thresholds.
Increase the Upper Null Zone.
Remove the disturbing object.
Move the transmitter to another position.
Clean the antenna.
Reference Manual
00809-0100-4418
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Emerson.com/Rosemount