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Users Manual Part 1

ManualsBrandsRosemount Tank Radar ManualsElectronicsRosemount 3408 Level Transmitter
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Level value drops when close to antenna
Symptom
Level value drops to a lower value when product surface is close to antenna.
Figure 7-4: Symptom
A
B
C
D
A. Level
B.
Time
C. Actual level
D. Reported level
Possible cause
Product surface is within the Upper Null Zone and a disturbance echo is interpreted as the
product surface.
Recommended actions
• Check the setting of the Upper Null Zone.
Related information
Upper null zone
Reference Manual Service and troubleshooting
00809-0100-4418
September 2022
Rosemount 3408 Level Transmitter 73