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178 Trend maintenance logs (Logs/reports Menu)
Section 5: Startup and meter configuration Reference, Installation, and Operations Manual
June 2013 3-9000-743 Rev S
5.10 Trend maintenance logs (Logs/reports Menu)
The Trend Maintenance Logs dialog box allows you to merge two or more Maintenance logs
together into a single Trend file in order to build a historical database of the performance of
ultrasonic meters. Maintenance logs can also be merged with existing Trend files to form a new
Trend file of the combined data. The Trend feature can be useful to see how the meter
performance changes with changing flow conditions over time. It can also be useful to detect
performance issues when the meter performance is deteriorating slowly over time but the flow
conditions have not changed in a manner to account for it.
The Trend Maintenance Logs dialog box contain two list boxes. The tree list Microsoft Excel
workbooks will show all the directories on your PC, but will only show files in them that are
Maintenance Logs in Microsoft® Excel® format or Trend files and only if they are not currently
open in Microsoft® Excel®.
To display all files in the Microsoft Excel workbooks directory tree, clear the Show only
maintenance log and trend workbooks option. Add files to the Workbooks to trend list by either
double-clicking on the file or by selecting the file and clicking
Add.
You can add an entire folder by selecting the folder and clicking
Add All or by double-clicking on
the folder in the tree list. This will include only the files in this folder and not any files contained
in subfolders. You can remove files from the Workbooks to trend list by selecting the file and
clicking
Remove. Click Remove All to clear the Workbooks to trend list of all files.
This feature is available in the Deluxe Edition of Daniel CUI and Daniel MeterLink.
Maintenance logs or Trend files to be trended must all have matching column headings. This
means the logs must be in the same units (i.e. U.S. Customary or Metric), must have the
same pressure type (i.e. gage or absolute), and must have the same time base (1/sec, 1/min,
1/hr, 1/day). If not, an error message will be displayed stating the column headings do not
match and the file will not be added to the Workbook to trend list.
Make sure any Maintenance Log file or Trend file that you would like to add to the Workbooks
to trend list is not opened in Microsoft® Excel®. If it is open, Daniel MeterLink will not be
able to add it to the list of files to trend.
The Show only maintenance log and trend workbook checkbox may not work properly on
Windows® 2000 machines running SP4 or Windows® XP machines with Security Update for
Windows® XP (823980).