Hello, I am trying to create an analysis in PI AF to calculate the total quantity of product going in to a silo over a 24 hour period. There is no flowmeter going in to the silo, just a weight indicator giving the weight. The silo can be loaded and unloaded but not at the same time. I have tried doing an analysis similar to the one suggested in Totalizer or Performance Equation to monitor a tank of chemicals and get a total of addition to the tank. but I think it does not work well a) because of the accuracy of the weight indicator b) because in reality there are several plateaus when there is no loading and unloading something which does not happen for the sinusoid tag- this seems to mess up the Change/PrevChange logic. Any suggestions?
Here is some sample data from the weight indicator from the last week: