Efficiency Plot - Remove 0 reading in plot

Discussion created by amygao1 on Sep 21, 2019
Latest reply on Dec 9, 2019 by Roger Palmen

Hi, I'm calculating the efficiency of a hydro block using Outlet flowrate/ Inlet flowrate. However this hydroblock is not running 24 hours, the efficiency returns 0 if it is not running. If I wana plot a trend of the efficiency against last 300 days in PI Vision, this 0 value will be disturbing. So I'm looking for an expression or formula to remove or avoid 0 readings, and get a smooth plot. Did anyone have any idea?


I tried If 'inletflow'>100 then 'recovery rate' else NoOutput()


This expression does not work for me.