Calculate Delta Stock

Delta Stock is the Volume change of the tank product in a specified interval.

The formula used is:

DeltaStock = TankVolume – PrevTankVolume

Where:

TankVolume = Current Product Volume in the Tank at the current time.

PrevTankVolume = TankVolume at the start time.

StartTime of the Interval for the calculation

The StartTime of the interval is the EndTime of the most recent Transfer that involves the tank in the last 7 days. If there are UP/DOWN status alarms in the Consistency Status tag, the StartTime is equal to the timestamp relative to the alarm status.

Note: If the selected CalcMode is Mass, then the TankVolume is previously calculated as TankVolume = MeasuredMass / Density.