I just installed a salt water chlorinator. It should only run while the pool pump is running. I control my pool pump using Zen multirelay, which works really well. Certainly, I could use a Aeotec High Power relay or GE Appliance relay to control the chlorinator and program it to only turn on when the pool pump is on, but I'd very much prefer more direct control that doesn't depend on the hubitat or a running program since a failure could allow the chlorinator to run w/o water flow.
The pool pump doesn't have any kind of output controls. That would have been too easy, I suppose.
So, instead, I'm wondering if instead there exists a current sensing relay, preferably one that can handle either a 220V 2.5A load or a 110 5A amp load (chlorinator can be wired for either). I'm picturing a relay that had a current transducer that would go around the pool pump's wiring and use that as a trigger to close the relay to the chlorinator.
Anyone have leads on something like this?