Emerson 3051S Spécifications télécharger pdf (Page 121)

Reference Manual

00809-0100-4801, Rev FA

October 2010

7-17

Rosemount 3051S Series

Reset

If SPM trip action is set to “Alert Latched”, clicking on Reset will clear the alert

when process conditions are back to normal or baseline.

Relearn

Clicking this button will cause SPM to relearn the process condition and

establish a new baseline. Manually performing a relearn is recommended if

the process profile has been intentionally changed to a new set point.

Figure 7-15. Operational Values

screen

The Operational Values screen contains the parameter values used in the

SPM diagnostic.

Standard Deviation

This is the current value of standard deviation. This value is continuously

calculated and can be provided as a secondary variable.

Mean

This is the current value of mean. This value is continuously calculated

and can be provided as a secondary variable.

Coefficient of Variation

This is the current value for coefficient of variation. The CV is derived from

the ratio of standard deviation to mean. This value is continuously

calculated and can be provided as a secondary variable.

Number of Relearns

This is the number of times SPM relearn has been initiated by the user or

via automatic relearn.

Detection

If the SPM diagnostic detects a Standard Deviation, Mean, or Coefficient of

Variation change outside the threshold values, the SPM Status box will

indicate “Detection”, followed by the type of detection.

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Emerson 3051S Spécifications Page 121