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Strike water temps with BIAB PID controller

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raney

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Nov 24, 2011
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I have recently built my new ebiab system and got a few brews under my belt on it, but am still trying to get my process dialed in. The biggest problem I am currently having is figuring out my strike temperatures - and hoped that some of the guys with more experience would have some advice.

Initially, I was heating my strike water up to what BeerSmith said to do with a BIAB setup, but found that it was throwing the PID algorithm way off when turning it down to mash temps.

For my last brew, I heated the strike water to my mash temp, mashed in, and just let the PID do it's work. I am using 2x 120 VAC 2000W elements, which ended up getting me to consistent mash temps within 5-10mins, but it gave me quite a bit of oscillation in those first few minutes which made me nervous. I think the reasoning behind this is that way too many variables change...the grains drop the temp, plus having the lid off of the pot for min or two while I stir my grains, etc etc...how do I avoid this oscillation and get to my target mash temp quicker?

My thought was to bring it to mash temps, or even a degree or 2 higher,
then switch it to manual mode to keep consistent power to the elements...then once I was mashed in and lid was on, turning it back to auto and dropping to mash temp. Would this help? or am I just worrying too much about those first few minutes? sorry if this doesn't make much sense - running off of little sleep here and preparing for a new brew in the morning. Any help is appreciated! Thanks!


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