Figure 7-29: Hold Off Distance/UNZ
A. Upper Reference Point
B. Hold Off Distance/UNZ
C. Disturbance
D. Surface peak
E. Surface Threshold
Set the hold off distance/upper null zone using Rosemount Radar
Master
Prerequisites
Note
By adjusting the Hold Off Distance/UNZ, the measuring range is reduced.
Note
Before changing the Hold Off Distance/UNZ, check entered value for the high alarm limit.
The high alarm limit must be outside the Hold Off Distance/UNZ.
Procedure
1. Use the Echo Curve plot to verify if there are disturbances in the upper part of the
tank.
Service and troubleshooting Reference Manual
April 2019 00809-0100-4530
228 Rosemount 5300 Level Transmitter
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