I've accumulated enough stuff to get started.
My plan is to construct a two panel system. This is mainly because I have been able to salvage a NEMA-1 cabinet from work, and I bought a NEMA-4 Cabinet on E-bay. The NEMA-4 will be on the brewery shelf, serving as an operator station. The NEMA-1 out of the way of water, and will house power relays, contactors and feed the kettles..
I've begun to lay out my controls. I have two Auber PID controllers and a Timer.
I'm thinking about heating the HLT using a sensor in the kettle and heating a HERMS set-up with a sensor in wort flow, using the same controller.
I'd like to test out a switch to select the sensor with out moving plugs.
I'm a bit concerned about circuit impedance in a selector switch, so some bench testing will be done before committing.
The BK will operate with the second PID.
I borrowed from everything I've seen here to cobble a schematic.
This is a first attempt at Tiny-Cad