proIMS Mass Balancing

Balance Principles

The Mass Balancing application usually needs several steps.

  1. Calculation of pipeline and tank inventories using the proIMS pipeline management module or collecting the data from other systems connected to the MIS like tank management or leak detection systems
  2. The second step is used if the related flows are not compensated. Using the methods implemented in the proIMS measurement packages flows will be compensated.
  3. Calculation of the individual mass flow rate for measured flows (this step is not required if the original measurement signal is already representing mass flow rates). The calculated mass flow rates are stored as "derived" Tags to the data base and can afterwards be accessed by the proIMS tools exactly like "original" Tags (e.g. Signal Tags).
  4. Calculate the balances
    For a defined balance area, where "n" flows are crossing the area's border and where "n-1" mass flow rates are available and known, the missing flow rate of the last flow can be calculated (as a mass flow rate, too).
    This is the principle of calculating "resulting" mass flow rates of unmeasured flows. The result is correct as long as the "known" values are correct and no further flows occur.
    Also these resulting mass flow rates are stored to the data base as "calculated" Tags and can afterwards be accessed by the proAsset tools exactly like "original" and "derived" Tags.

Graphical Tools are available for configuration. The results can be displayed in all kind of proIMS Reports and Web displays.

Normally the balances are calculated online in real time with configurable time delay of 2 to 4 minutes.

Additionally, the user has the ability to re-calculate the balances over a certain time period to reflect configuration changes.

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