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Reference Manual
00809-0100-4832, Rev AA
October 2004
3-33
Rosemount 3095FC
History Point 2, History Point 3, History Point 4, and History Point 6 are all
setup as an Average Archive Type that employs one of the following
techniques:
• Flow dependent time-weighted linear averaging (default)
• Flow dependent time-weighted formulaic averaging
• Flow-weighted linear averaging
• Flow-weighted formulaic averaging
Averaging Technique
The averaging technique is selected using Rosemount User Interface
Software. The user-configurable history points, 9-15, may be configured using
Rosemount User Interface Software. In the Meter > Setup > Inputs tab, select
the desired Averaging Technique. The selected Averaging Technique is
applied to the meter inputs.
History point archival includes:
• Archival of minute data from the last 60 minutes for 15 points.
• Archival of 60 days of 10-minute data for 4 points.
• Archival of 35 days of hourly data for 15 points.
• Archival of 35 days of daily data for 15 points.
• Archival of minimum / maximum historical data for today and yesterday.
Log Types
The following are logs that are available through the History Points data.
• Minute Historical Log: The 3095FC has a 60-minute historical log for
each history point. The Minute Historical Log stores the last 60 minutes
of data from the current minute. Each history point has Minute
Historical Log entries.
• 10-Minute Historical Log: The 3095FC has a 10-minute historical log
for up to four (4) history points that stores 60 days of 10-minute data.
The four (4) 10-Minute history points include DP, SP, flowing
temperature, and an auxiliary Analog Input.
• Hourly Historical Log: The 3095FC has a total of 35 days of hourly
historical logs available for every history point. The Hourly Historical
Log is also called the Periodic database. Normally, the Hourly Log is
recorded at the beginning of every hour. The time stamp for periodic
logging consists of the month, day, hour, and minute.
• Daily Historical Log: The 3095FC has a total of 35 daily historical logs
for every history point. The Daily Log is recorded at the configured
contract hour every day with a time stamp that is the same as the
Hourly Log. Each history point has daily historical log entries.
• Min / Max Historical Log: The Min / Max database displays the
minimum and the maximum values for the database points over a
24-hour period for today and yesterday. The Min / Max historical log
can be viewed, but not saved to disk.