Hi all,

I am a little new to the beautiful world of PI Processbook and have therefore an easy question. We have measurements on our site, and one of them is the level indicator drum which is drained often:

I would like to plot the slope (thus the flow) in the same plot. This must be possible and pretty easy, but I dont know how.

Does anybody know?

Thanks! =)

One option is to use a DataSet in Processbook.Use the TagVal PE function to take the value of a tag now, and another value at a previous interval of choice, then divide the difference by the time interval (in seconds).

1 Minute slope for cdt158

(TagVal('cdt158','*')-TagVal('cdt158','*-1m'))/60