Samson TROVIS SAFE 3731 Series, Руководство по эксплуатации

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EB 8389S EN 31
Statistical information
3.3.1 Analysis and monitoring
Analysis of the histogram for control valves
starts one hour after the observation period
begins. No analysis is performed for on/off
valves.
If the control valve mainly works during the
observation duration near or in one of the
end positions, the positioner generates the
'Working range' message with the selected
status classification.
For analysis of the short-term monitoring, a
complete set of data (100 measured values)
is required.
The positioner generates the 'Shifting work-
ing range' message with the selected status
classification whenever a trend showing a
change in the working range is found from
the analysis of the histogram and the short-
term monitoring.
Diagnosis > Status messages > Extended
− Shifting working range: , , ,
− Working range: , , ,
Fig. 3: Diagnosis > Statistical information > Travel histogram x