Henielma1 wrote:The temperature of the wort does fluctuate a lot less then it ambient temperature. In my experience the swing becomes less when you mount the temperature sensor to the outside of the fermentation vessel and isolate the sensor a bit from the ambient but not to much.
In the Netherlands we often use a scourer to isolate the sensor a bit from the ambient. The trick is to have some isolation from the outside environment but not to much. A bit of feed forward in the control system is good to prevent to much overshoot. That is why you do not want too much isolation.
+1 Well said

