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Reference Manual
00809-1600-4530, Rev AA
Section 2: Installation & configuration
March 2015
Installation and Configuration
2.5.2 Strong fixed echo - bent probe/probe contacting nozzle
A probe in contact with metal creates a strong echo and the measurement will lock onto the
strong echo.
Note
Heavy contamination may also create strong disturbance echoes.
Figure 2-9. Echo Curve with a Bent Probe
Recommended actions:
If bent probe, try to straighten it gently. If this is not possible, a replacement of the
complete probe assembly may be required.
Verify that mounting considerations described in Section 3.2.5 Mounting in
Chamber/Still Pipe in the Rosemount 5300 Series Reference Manual (document
number 00809-0100-4530) are fulfilled. The probe length should be slightly shorter
than the chamber length.
Consider adding a centering disc at the bottom of the probe. For more information, see
Section 3.3.9 Mounting a Centering Disc for Pipe Installations in the Rosemount 5300
Series Reference Manual (document number 00809-0100-4530). This helps to keep the
probe centered in the chamber/still-pipe.
If flexible probe in contact with nozzle, consider using a long stud. For more
information, see Section 3.2 Mounting Considerations in the Rosemount 5300 Series
Reference Manual (document number 00809-0100-4530).
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