View 24 Hour trends using the PLM Controls menu
- Last UpdatedApr 24, 2025
- 2 minute read
The Pipeline Monitoring (PLM) Controls menu provides access to trends of individual monitored values:
-
Linepack – linepack.
-
Tankage – tank volumes.
-
Meter In – metered input volumes.
-
Meter Output – metered output volumes.
-
Delta Flow – metered input volumes minus metered output volumes.
Trends are displayed on two line graphs. The top graph represents individual monitored values of the three short term periods and the lower graph represents individual monitored values of the three long term periods. Specific time periods are distinguished by color.
To access a trend of individual monitored values
-
Select one of the 24 Hour Trends buttons on the PLM Controls menu.
PLM Trend (Linepack example) shows a sample trend.
The time controls at the top of the trend displays follow default methods for setting the time interval of the trend.
The following table detail the items on the PLM Trend window.
|
Item |
Description |
|---|---|
|
Volume Units |
Provides the unit information for the volume. These volume units are defined in the Unitprofile table. |
|
Relative Time |
Select the Relative Time option to view the trending data from the last 4, 8, 12, or 24 hours. Use the 4hrs, 8hrs, 12hrs and 24hrs buttons to update the time period the trends are displayed for. |
|
Absolute Time |
Select the Absolute Time option to display trending data for a specific time period. Use the Start Time and End Time fields to configure the dates and time for the displayed trending data. |
|
Go |
This button will refresh the screen data. |