Emerson 3051S Spezifikationen PDF herunterladen (Seite 114)

Reference Manual

00809-0100-4801, Rev FA

October 2010

Rosemount 3051S Series

7-10

Figure 7-8. Statistical Process

Monitoring main screen

The SPM Status screen shows overview information for the diagnostic.

The process for operation of the SPM diagnostic is:

• Configure the diagnostic using Baseline Configuration and Detection

Configuration screens.

• Turn on the diagnostic from the SPM Status screen.

The configuration process starts with Baseline Configuration, Figure 7-9 on

page 7-11. The configurable fields are:

SPM Variable:

This is the statistical variable to be used for SPM diagnostic detection.

Stdev & Mean (default)

Standard deviation and mean of the process are calculated. Users can set

independent sensitivity thresholds for both statistical variables.

Coefficient of Variation (CV)

CV is calculated from the ratio of standard deviation to mean and is better

suited for DP flow applications where the mean pressure is likely to

change due to changing process operation. CV puts standard deviation in

context of the mean and is represented as a % value.

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 239 240

Keine Kommentare

Emerson 3051S Spezifikationen Seite 114