Hello everybody!
I have a level indicator (See attached trend) that is problematic and report some bad data (the level decrease should be linear). Changing the indicator is not an option for now. I manually locate the time when a new batch starts and the time when it ends.
1) I would like to calculate the time range between the start and the end of the batch (indicated by the sudden level change in the trend) and the change in level during this times, for a month (to totallize the amounth of chemicals consumed during this time). I'm trying to implement this in Excel via PI DataLink.
2) If possible I would like to count the time from now (*) going backwards til the start of the last batch. And display this time in a value in a ProcessBook Display. And using this time I would calculate the estimated flow rate, using the level changes in this time.
For exemple: Duration of the batch: 28:20:00
Estimated Flow rate: 3,25 L/h
Regards