See attached. Domain is time (minutes) and range is temperature. You can see the grain temp raise from ambient up to near the strike then back down again as the water and grain equalise temperatures. Interesting thing is that the mash takes about 16 minutes before it actually hits a stable temperature. Gonna do this for a bunch of mashes to see if I can use it to tweak my system any.
This was a 3 gallon mash on 9.25lbs of grain; strike temperature was 169F, targeted mash temp was 154F (I missed).
Only mashed for 50 minutes, and the sensor was towards the outside of the tun. At 50 mins you can see the spike downwards from the lid opening, and then I moved the sensor to the middle of the mash tun to see the difference (about one degree greater).
