I've blown a couple heater elements in my HLT by running it partially submerged or dry. Stupid
. I want to put a little automatioin on it, but want some input.
I currently have a 10 gal cooler, so I thought about epoxying a capacitive prox to the inner wall and tuning it to "see" the water behind it.
However, going to an all SS 10 gallon system, and a capacitive prox won't work thru a metal wall. I'm thinking about something on a sight glass, but finding something small enough and mounting issues are problematic. I thought I could wire it in series with the main power heater relay to interupt power to the heating element if water goes below the set level.
Has anyone added this safety feature? What did you use and how did you wire it in? As always, pitures appreciated.