Emerson ROSEMOUNT 5300 Especificações descarregar pdf (Página 85)

Reference Manual

00809-0600-4026, Rev BA

December 2011

6-9

Rosemount Process Radar

2. Take a back-up of the plot including the reference/antenna echo

3. Review peak amplitudes

Verify that no disturbing echoes are present above the Surface

Threshold (ATC).

• Common Problems and Recommended Actions

Surface Threshold (ATC) is too low

If there are disturbing objects in the tank (e.g. nozzles, internal

obstructions, gaps between still-pipe modules) the threshold must be

set carefully to avoid locking on the wrong amplitude peak.

Figure 6-11. Surface threshold is

too low

Read Diagnostics

Verify that no Errors or unattended Warnings are present.

For more information, see the Rosemount 5400 Series Reference Manual

(Document No. 00809-0100-4026) section “Diagnostic Messages”.

• To view Diagnostics in Rosemount Radar Master:

Rosemount Radar Master > Tools > Diagnostics

Figure 6-12. The Diagnostics

window in Rosemount Radar

Master

Amplitude, mV

Actual surface

Surface Threshold=

Amplitude Threshold

Curve (ATC)

Distance, m

P1 - Disturbing echo

misinterpreted as

product surface

Reference

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Emerson ROSEMOUNT 5300 Especificações Página 85