So I've been searching the forums trying to figure out how I'm going to put together my e-HLT/HERMS. I have many questions regarding wiring and PID controllers in general, but I know that although I've spent hours on here, there are still posts out there that will answer my questions. What I haven't been able to find is the answer to this question:
If the temperature probe on the PID controller is measuring the wort output temperature, why is a stirrer necessary? Yes, the water will be different temperatures throughout the HLT, but all of the combinations will sum to one temperature output. Along these same lines of thought, do you all think a rib-cage style coil would work better in order to have the coils throughout more of the water?
Thanks for any reply.
PS If someone knows a link off-hand describing the basics of PID controllers, SSR, etc., I would be much obliged. Thanks again.