Emerson Rosemount 5408 Reference Manual page 115

Add a new false echo suppression
Prerequisites
Follow these recommendations before suppressing new false echoes:
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It may be necessary to suppress new false echoes at a later stage when objects have
become visible due to surface movement.
Procedure
1.
2.
Delete a false echo suppression
1.
Rosemount 5408 and 5408:SIS Level Transmitters
Make sure a correct amplitude threshold is set (see
Make sure the level is stable. A fluctuating level may indicate a temporary
disturbance which is not due to an interfering object.
Only suppress echoes which can be clearly identified as objects in the tank. Compare
the list of interfering echoes with the tank drawing or visual inspection of the tank.
Do not suppress false echoes located below the product surface.
Keep the number of suppressed false echoes to a minimum.
In Rosemount Radar Master Plus, under Service Tools, select Echo Curve.
In the echo curve, click
Figure 7-7: Add False Echo Suppression
In Rosemount Radar Master Plus, under Service Tools, select Echo Curve.
at the unknown echo peak, and then select Suppress.
Service and Troubleshooting
Amplitude thresholds).
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