Calculate tank average Gross Observed Volume (GOV) and Gross Standard Volume (GSV) flow rates

The average Gross Observed Volume (GOV) flow rate is the average flow rate based on the tank level change over an elapsed time interval. The average GOV flow rate for an elapsed time interval is calculated as follows:

For each elapsed time interval, the volume change over the period is determined and divided by the actual-elapsed time to get the flow rate. The elapsed time interval is then reset, and the flow rate calculation is not repeated unit the period is exceeded again. The flow rate is a negative value if emptying, and a positive value if filling.

The elapsed time interval is configured by an Administrator. Configure the elapsed time using the Average Flowrate Period field on the Tank Configuration tab. For more information, see Configuring the Tank Configuration Tab on the Tank Record.

The average Gross Standard Volume (GSV) flow rate is the average GOV flow rate corrected to standard temperature. The average GSV flow rate is calculated as follows: