Recently just build a RIMs tube using the "RIMs for Dummies" thread as a guide. 1.5" stainless plumbing from Murray Equipment (10" nipple), 1500w 120v element from Plumbing Supply and the Auberins 2362 w/ 2" RTD probe. All I plan to use the tube for is maintaining my mash temps, and since I didn't want to rewire the garage with 220v and only had a 15A circuit readily available I went with the smaller system.
Brewed with it for the first time this last weekend and it didn't work as expected. After getting my mash to 152, I set the PID to 154 and tried auto-tuning. Over the course of the next 5-10 minutes my mash temp dropped down to 148. I decided to switch over to manual mode to get the mash back up to 154 and ended up going manual mode @ 55% power or so the rest of the time and w/ some tweaking every 5-10 minutes on the power was able to maintain my mash temp manually alright.
I reset the PID to default settings, tried the same method again for the 2nd beer and the auto-tune feature failed again so had to resort to running the PID manually again. What am I doing wrong? Is my nipple too long and I'm getting some stagnant water perhaps? I notice since I ordered the 2" probe it doesn't really make it all the way down to the outlet "T". I know the element is strong enough to get my mash temps up since I was able to do it in manual mode, so not sure why the PID auto-tune function doesn't work for me.
Brewed with it for the first time this last weekend and it didn't work as expected. After getting my mash to 152, I set the PID to 154 and tried auto-tuning. Over the course of the next 5-10 minutes my mash temp dropped down to 148. I decided to switch over to manual mode to get the mash back up to 154 and ended up going manual mode @ 55% power or so the rest of the time and w/ some tweaking every 5-10 minutes on the power was able to maintain my mash temp manually alright.
I reset the PID to default settings, tried the same method again for the 2nd beer and the auto-tune feature failed again so had to resort to running the PID manually again. What am I doing wrong? Is my nipple too long and I'm getting some stagnant water perhaps? I notice since I ordered the 2" probe it doesn't really make it all the way down to the outlet "T". I know the element is strong enough to get my mash temps up since I was able to do it in manual mode, so not sure why the PID auto-tune function doesn't work for me.