Emerson ROSEMOUNT 5300 Spezifikationen PDF herunterladen (Seite 91)

Reference Manual

00809-0600-4026, Rev BA

December 2011

7-5

Rosemount Process Radar

Figure 7-3. Loop test for Analog

Out 1 - [LT-01]

Step 3. Echo-Curve

Verification at Operating

Conditions

At normal operating conditions, download and review the echo-curve

according to the following steps:

1. Check Reference Pulse amplitude and position

Compare the result against the previous plots, taken during cold start-up.

2. Review peak amplitudes and threshold settings

Verify that the surface peak is visible and that the thresholds have been

set as described in threshold settings. For information on threshold

settings, see “Threshold settings“ on page 7-3.

3. Store the echo-curve

Permanently store the echo-curve for future use, with re-occurring

verification procedures.

The reference pulse can be displayed by adjusting the plot view to show

negative values, that is up to -3.3 ft (-1 m) in the plot.

Figure 7-4. Peak amplitudes and

threshold settings

UNZ

Surface

peak

Interface

peak

Interface

threshold

Surface

threshold

Reference

peak

Distance

Amplitude

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 105 106

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Emerson ROSEMOUNT 5300 Spezifikationen Seite 91