First off I would like to thank PJ, he truely is a genuine person. Back in 06' he helped me get started with my ebrewery which I never completed due to several issues beyond my control. Now I'm back at it
If I'm understanding this diagram correctly it will give me a very simple control panel, which will allow me to control 1 of 2 elements at a time. My question really is, do I need a second PID. I have yet to brew with a HERMs setup, but my understanding is a second PID would monitor MT output, while the first would control the Temp in the HLT. Since my setup will not be 100% automated, couldn't one just montior the temp in mash, and either increase/decrease flow through HERMS, or +/- temp in HLT to reach proper mash temp.
Once mash completed, it would just be a matter of switching PID to BK. Also from what I have read a temp probe is not needed when boiling as it is the duty cycle that controls the boil, is this correct?
I have to plan everything out and currently all my brewing items are over an hour away (damn conodo assoc.).
*I realize the diagram does not show temp probe leads, but they would be ran as well