I went through and calibrated all my thermometers today, thinking that i was about to start making pislners and mistakes in temperature are harder to hide in this style. I have an electric hot liquor tank with a k type thermalcouple hooked up to an auber syl 2352. so to check/calibrate this thermometer i have 2 others that were already calibrated and used to measure the temperature in the hot liquor tank. the two calibrated thermometers were consistenly withing 2 degrees of each other. the k type hooked up to the 2352 was all over, and the offset (Pb variable on the controller) was different depending on the temperature i was measuring. it is not a consistent offset through the teperature range i a measuring. Is this typical for k type thermalcouples? or did i somehow mess mine up?