Temperature Controller with a brew belt?

[fenners]

Normally here in Texas, it's the heat we need to worry about, but not recently with all these polar fronts. To keep my fermentation going, I need to use a brew belt occasionally to keep the temperature up.

I have an analogue Johnson temperature controller with the large metal probe that I normally use with my fermentation fridge.

If I want to regulate the temperature of my brewbelt with this, where is the best place to put the probe? And dumb question - is is the very tip of the probe that's the temp reading part, or the more bulky probe?

 

[aiptasia]

The best place would be to install a thermowell in your fermenter and thread the probe inside of it, so that the probe is resting inside the wort as it ferments. Or, you could do like I do and just duct tape the probe to the outside of the fermenter about halfway down. Pretty easy.