Emerson Rosemount 3051S Series Reference Manual page 82

Advanced Pressure Diagnostics
October 2016
Figure 6-3. Rosemount 3051S FF Statistical Process Monitoring
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 values of the mean and standard deviation. Based on sensitivity settings and actions
selected by the user via the control input, the diagnostic generates a device alert when a significant
change is detected in either mean or standard deviation.
Figure 6-4. Statistical Process Monitoring Flow
72
Reference Manual
00809-0200-4801, Rev DA
Advanced Pressure Diagnostics