Emerson ROSEMOUNT 5300 Specifikace stáhnout pdf (Strana 51)

Reference Manual

00809-0600-4026, Rev BA

December 2011

4-7

Rosemount Process Radar

Figure 4-6. Surface threshold is

too high

Figure 4-7. Surface threshold is

too low

Recommended Actions

Adjust ATC threshold to detect the actual surface peak.

Alternatively adjust Upper Null Zone.

• Interface pulse not detected

3.0 5.0

The Surface Threshold is

above the Surface peak

Surface Threshold=

Amplitude Threshold

Curve (ATC)

Reference Threshold

Amplitude, mV

Distance, m

3.0 5.0

Actual surface

Disturbing

echo

misinterpreted

as product

surface

Amplitude, mV

Distance, m

Reference Threshold

Surface Threshold=

Amplitude Threshold

Curve (ATC)

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 105 106

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Emerson ROSEMOUNT 5300 Specifikace Strana 51