@control4reak - As I understand it, the question @Franz asked is dependant on how your water lines are run. (or could potentially be run)
You mentioned a separation between grass and flower zones. So, are we talking:
- A) a physical separation? (a split in the water early on, flowing in separate directions for grass vs flower)
- B) an electrical separation? (entire system in one 24 zone water "chain", but in two separately-managed groups)
- C) a combination of the two?
Setup recommendations would be easier if we understood the anatomy of your system.
Also, understanding the intent behind your desire for flow sensing is important. Going back to an earlier response:
Are you worried about leaks in a particular zone/area?
I don't have a flow meter myself, but this seems to be a prime reason people install them.
Bottom line, only the 2nd generation Iro can isolate zone-specific flow data from the meter(s). If grass zones are more likely to need specialized flow data than your flower zones, make sure your 2nd Gen is controlling those. (or vice versa)