Emerson ROSEMOUNT 5300 Especificações descarregar pdf (Página 41)

Reference Manual

00809-0600-4026, Rev BA

December 2011

3-9

Rosemount Process Radar

Figure 3-9. Loop test for Analog

Out 1

Echo Curve Verification

1. Download and review the echo-curve

Figure 3-10. The Echo Curve

presents all visible echoes

2. Verify that the reference pulse is detected

3. Review peak amplitudes

Verify that the probe end pulse is visible. If the probe is grounded or SST

centering disk is used, the pulse is positive. Otherwise the pulse will be

negative.

Verify that no disturbing echoes are present above the Surface

Threshold (ATC).

3.0 4.0

5.0

6.0

Interface Threshold

Surface Threshold

(ATC)

Probe End Threshold

Reference Threshold

Full Tank Threshold

Amplitude, mV

Distance, m

Reference

Probe End

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Emerson ROSEMOUNT 5300 Especificações Página 41