Reset trim near zone using Rosemount Radar Master
To reset the Trim Near Zone function to factory setttings:
Procedure
1. Select Setup → Advanced.
2. Select the Near Zone tab.
3. Select Trim Near Zone.
4. Select Reset near zone trimming to factory settings, and then select OK.
Reset trim near zone using AMS or a handheld communicator
To reset the Trim Near Zone function to factory setttings:
Procedure
1. HART
®
: Select Overview → Echo Tuning.
FOUNDATION
™
Fieldbus: Configure → Manual Setup → Avanced.
2. Select Near Zone → Reset near zone trimming to factory settings and follow the
instructions.
Changing the hold off distance/upper null zone
The Hold Off Distance/Upper Null Zone (UNZ) defines how close to the Upper Reference
Point a level value is accepted. You can extend the Hold Off Distance/UNZ to block out
disturbing echoes close to the tank top, see Figure 7-29.
Reference Manual Service and troubleshooting
00809-0100-4530 April 2019
Reference Manual 227
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