Flow sensor for RIMS tube safety

[clearwaterbrewer]

you want the pressure switch before the throttling valve, you may have to restrict flow with the valve just a bit to get it to turn on...

[bergerrings]

Update:
Wired up the pressure switch over the weekend and it works a treat! I hadn't brewed in a while so I was heating up cleaning solution and running it though my heat exchangers. Due to being slack during previous brews the heat exchangers were continually blocking and from the graph you could see the temperature rise up to a point and then fall off when the pressure switch shut off the heater.
Would definately recommend this to the absent minded brewer.

[clearwaterbrewer]

you should post a pic and describe your wiring and any programming...

[Backyard Brewer]

One thing I strongly advise with the Brewers Hardware RIMS tube is to keep the main temp control sensor for the element control in the RIMS tube and not in the mash or effluent. That way if there is a flow blockage or pump failure, the temp in the tube will rise rapidly and kill the power to the element. It won't prevent dry firing, but can help protect against accidental boiling in the tube and subsequent pressurizing.