I am looking at adding the EKM 3/4″ pulsed output water meter to my system. It has a dry contact pulse every 1/10 cubic foot (about 0.75 gallon, or 2.83 liters.
I plan on using drip irrigation for one of my zones where the flow should be around .3-.5 gallons per MINUTE. So I should be getting a pulse every 45-60 seconds or so.
Will this work with OpenSprinkler? Will it show the total amount of water used during a program? I saw elsewhere the flow rate is calculated based on the number of pulses in a 30 second window. Based on my low flow rate I just want to make sure that this will still work.
It should still work. The real-time flow rate is not going to be accurate any more, since it uses a 30 second window and that means there may not be a pulse reading within that window. But you can either change the window size to be a minute or more, or just ignore the real-time flow rate and only look at the logged flow data. You are right that the number of pulses that occurred in each program will be logged.