A system like this has already been suggested twice and apparently rejected. (but without the electronics)
A pressure switch seems to be the preferred way, but I still wonder what happens to the pressure when the pump is running...I predict oscillation.
Assuming the water pipe coming into the house to the pump is a decent size, all you need is a pressure switch which responds to the pressure being on. The pump starting should only decrease the pressure slightly, so no oscillations. Then, you need a float switch in the tank to shut off the pump when tank is full. Simple solution.No need to apologize.
Still, unless the pump turning makes the pressure go negative at the inlet, the simple solution works. Why not test this with a simple experiment before complicating the solution. Put a "T" in with a valve and see if you still get a small bit of water OUT as you crack open the valve on the T branch with the pump on!Yeah, not a good idea to assume. Truth is - we don't know anything about the water supply pipe or pressure. Only thing I recall is the mention that the water pressure is not high enough to get the water to the storage tank.
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