There are stainless thermowells for housing temperature sensors. These are 3/8" OD, 16" long. Do I need a thermowell in this case for measuring wort temperature, or can I put the temperature sensor directly into the wort without the thermowell? Here's why I'm unsure:
- the thermowell page talks about protecting the temperature sensor, yet the stainless tube on the temperature sensor is made using the same process as the thermowell, so it's ok to immerse the stainless part of the sensor directly in the wort?
- most grommets for airlocks are 3/8" size, making the thermowell a perfect fit. Are there 1/4" grommets that would fit the temperature probe? A quick search didn't find anything.
Just some background info - I will also be measuring ambient temperatures as well as wort temperature, and understand the issues involved with temperature control based on the wort temperature due to the large thermal mass. I'm curious to see in practice how much fermentation temperatures rise above ambient over the entire fermentation period.