Emerson 3051S Spezifikationen PDF herunterladen (Seite 103)

Reference Manual

00809-0200-4801, Rev CA

July 2010

6-25

Rosemount 3051S

Figure 6-20. Flow Chart for

Plugged Impulse Line

Diagnostics

CONFIGURATION OF

PLUGGED IMPULSE

LINE DETECTION

This section describes the configuration of the plugged impulse line

diagnostic.

Basic Configuration For some impulse line plugging applications there will be a very significant (>

80%) decrease in standard deviation. Examples of this would include a plug in

the impulse line of a GP/AP measurement in a noisy process, or a plug in both

impulse lines of a DP measurement. In these applications, configuring

plugged impulse line detection requires nothing more than turning it on. To do

this, set

PLINE_ON = Enabled

Once the PIL is enabled, it will automatically start the learning process, and

move to the detection phase if there is sufficient variation and the process is

stable.

Optionally, if, when a plugged impulse line is detected, you want to

automatically have the status quality of the pressure measurement go to

“Uncertain”, set the parameter

PLINE_Affect_PV_Status = True

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Emerson 3051S Spezifikationen Seite 103