Estimating GPM from pump speed

[Poolnewb105]

Knowledge of the flow rate of the pump would not indicate the amount of water leaking out of the pool unless all of it was leaking such as with a broken pipe. But in that case, the flow rate estimated would be much lower than actual because the break point would eliminate a lot of head loss, depending on where it occurred.

Also, that sensor will only detect a leak in one location and only when it can accumulate enough to trip the sensor. A leak can occur anywhere including underground where the sensor would be useless. Even on the pad, the water would normally run away and not accumulate.

Why the concern about a leak? When they do occur, then tend to be quite slow.

I'm only concerned about the heater couplings honestly. For some reason this year when running the heater for a long time, one of the couplings begins to loosen when it cools back down (regardless of how right I have it).

A kill relay was just insurance. Im hoping it I just have it go down to 1,100rpms that whatever water leaked through the coupling would be immaterial if I was away for a while. The pool equipment is located inside a shed so I wouldn't want to lose water and make a mess of things.

I wish there was a 240v smartplug. It would save me a bunch of trouble