Flow Weighted Averages

This calculates averages for the process variables, listed in the input table, by reading the corresponding values at two separate time intervals within the selected time period. For this test to pass and be valid the process variables must have a fixed value in each of the two time intervals and the values must be different. The average is then calculated using either the mass or volume based total produced in each of the two time intervals.

The following calculation is carried out for all process variables.


Symbol Description Units
PVFWA Process variable flow-weighted average n/a
PV1 Process variable value for set 1 n/a
PV2 Process variable value for set 2 n/a
W1 Increment weighting for set 1 %
Qm Increment weighting for set 2 %