Thanks for the reply, that sounds great. I will look into soldering the wire, but as long as I have a flow meter im fine with no RPM signal.
I will look into that flow meter, and the 400 and pick between the two.
Again, thank you for the reply.
It should all work fine.
If you have basic soldering skills it should be possible to add an RPM wire to your pump. If you google it there is at least one guide that shows you where to solder the wire on the pump PCB. The back of the pump just pops off, if the PCB has D5 V1.51 printed on it I can tell you were the contact is.
For flow meters I personally think the basic non USB high flow model works just fine. If you want a pressure based MPS model then the 400 is the way to go. Depending on what is in your loop the 200 and 100 model are really too low a flow rate to be useful.