Originally Posted by Brew-ta-sauraus
I have a 15 gal mash tun from More beer. Tun is 13" tall and I have a blichmann brewmometer installed in the side about 6" up. I use the short temp probe less than an inch and a half long. I brewed Sunday and used a second temp probe stuck in the center of the mash. I calibrated both probes to with in .2 degrees. While brewing I noticed middle mash temp was 10 degrees off from the brewmometer. Any thoughts on this? Thats a big differential in temp. What size temp probes do other brewers use in their mash tun?
Mash temps vary from top to bottom, side to side. That is normal. I would guess the middle temperature was warmer? If the SS tun is not insulated it will lose a lot of radiant heat and I could understand the difference.
I *think* I use the same mash tun as you and I have made a removable reflectex jacket for it. I also have an electric HLT with HERMs coil to help keep mash temps more stable.
IMHO, if you are going to use a stainless steel MLT you need a RIMS or HERMS to keep your mash temperatures where you want it.