Emerson 3051S Specifiche Scaricare il pdf (Pagina 110)

Reference Manual

00809-0100-4801, Rev FA

October 2010

Rosemount 3051S Series

7-6

Figure 7-4. Statistical Process

Monitoring diagnostic resident in

transmitter

SPM also contains a learning module that establishes the baseline values for

the process. Baseline values are established under user control at conditions

considered normal for the process and installation. These baseline values are

made available to a decision module that compares the baseline values to the

most current statistical values. Based on sensitivity settings and actions

selected by the user via the control input, the diagnostic generates alarms,

alerts, or takes other actions when a significant change is detected in either

value.

Process

Variable

Statistical

Calculations

Module

Learning

Module

Decision

Module

Standard Outputs

(4-20 mA / HART)

Control Inputs

Outputs

HART alert /

4-20 mA alarm

Resident in Transmitter

Statistical Parameters

Baseline

Values

1 2 ... 105 106 107 108 109 110 111 112 113 114 115 ... 239 240

Nessun commento

Emerson 3051S Specifiche Pagina 110