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Reference Manual
00809-0700-4530, Rev AA
Section 5: Troubleshooting Procedures
September 2013
Troubleshooting procedures
Rosemount 5600 Series solids measurement
In a nozzle installation, review the installation considerations. For solids measurement with
weak surface echo, mechanical installation is especially important, since nozzle disturbances
will disrupt the surface measurement. For best practice, ensure that the antenna reaches into
the tank (at least 2 in. (50 mm)). If necessary, review threshold settings and adjust hold-off
(UNZ).
Figure 5-17. Mechanical installation - What difference does it make?
5.5.2 Geometries
Review the tank geometry and check if any assumptions have been made that caused the
inaccuracies. For example, the location of a sight-glass or secondary chamber may have been
assumed to be at the same location as the radar measurement, but in reality they are not.
Figure 5-18. The sight-glass and chamber are not on the same level where they are
supposed to be
Antenna reaches into tank
Level is still at 52 in. (16 m), but now
visible
Antenna recessed up in nozzle/manway
Level is at 52 in. (16 m)
Incorrectly assumed to be on
the same level.