
7.3.4
Level value drops when close to antenna
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
Reference Manual
Service and troubleshooting
00809-0100-4480
September 2020
Reference Manual
55
Содержание Rosemount 1408H
Страница 6: ...Introduction Reference Manual September 2020 00809 0100 4480 6 Rosemount 1408H Level Transmitter ...
Страница 12: ...Transmitter overview Reference Manual September 2020 00809 0100 4480 12 Rosemount 1408H Level Transmitter ...
Страница 40: ...Configuration Reference Manual September 2020 00809 0100 4480 40 Rosemount 1408H Level Transmitter ...
Страница 96: ...Configuration parameters Reference Manual September 2020 00809 0100 4480 96 Rosemount 1408H Level Transmitter ...
Страница 97: ...Reference Manual 00809 0100 4480 September 2020 Reference Manual 97 ...