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Old 01-12-2011, 05:22 PM   #1
cascadia
 
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Has anyone made or purchased a corny lid with a thermowell?

I am switching over to fermenting in 10 gallon cornelius kegs and would like to be able to take internal temperature readings.

Thanks

 
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Old 01-12-2011, 05:25 PM   #2
Maltose
 
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I'd just suggest a sticky thermometer on the side. It should be very accurate through the thin stainless walls. Unless someone manufactures a corny lid with a built in well, you'd have to punch a hole in there and make it able to hold pressure.

 
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Old 01-12-2011, 05:31 PM   #3
samc
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I have one on my 15 gallon corny lid. Made my own, although if I was to do it again I'd attack it differently.

 
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Old 01-12-2011, 05:35 PM   #4
cascadia
 
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I have a stick on thermometer now. It gives a general idea of temperature. I am looking for something more accurate. Previously with my carboy I was reading 3-5F warmer in the middle with a thermowell than the stick on was showing.

I am building a heating/cooling jacket for the keg. So I would really like to be able to put my controller probe right down in the middle of the fermentation.

 
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Old 01-12-2011, 05:36 PM   #5
cascadia
 
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@samc, what would you do differently?

 
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Old 01-12-2011, 05:37 PM   #6
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If you're using it to ferment, I'm assuming that you have an airlock or blow-off tube coming off of one of the posts. If that's the case, you can always unscrew the pressure relief valve and see if you can find (or make) a thermowell that would mate with those threads. That way it would be centrally located in the keg and would be easily replaced with the pressure relief valve if you need to use the keg for pressurized kegging duty.

(Edit: Not being familiar with 10 gallon cornies, I am assuming they have lids similar to the 5 gallon versions with the pressure relief valves. If not, ignore this suggestion.)
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Old 01-12-2011, 05:42 PM   #7
cascadia
 
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ace, that is a good idea. I have a pressure gauge, bleeder valve and blow off tube on the gas post to vent co2. The lid I am currently using is the racetrack style with a welded (non threaded) relief valve. I'll look at my spare lids and see if any have a threaded opening.

 
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Old 01-12-2011, 06:13 PM   #8
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I bought a thermowell with the temp controller a while back, and all it was is the dip tube crushed and sealed on the bottom end. Maybe take the popet valve out of a post and run the probe through that.

 
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Old 01-12-2011, 06:22 PM   #9
samc
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Quote:
Originally Posted by cascadia View Post
@samc, what would you do differently?
I had a short piece of 1/2 ss tube welded into the lid. Then I attached a longer tube with some silicone tubing as a hinge point. The Therm sits inside of all of that. Too complex for what I needed. I would just order a longer probe (Derrin @ http://www.brewershardware.com/12-Te...r-BCS-460.html) and drill a smaller hole in the lid or run the cable through the PRV hole. You can just cover the cable with some Silicone tubing.

 
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Old 01-12-2011, 08:47 PM   #10
SweetSounds
 
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The easiest way, I would think, would be to just drill a hole, install a grommet, and slide a long turkey fryer thermometer through the grommet.
It should be relatively air tight, removable (So you can still tip the corny lid to get it out), and best of all, cost about $0.10
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Originally Posted by Ecnerwal View Post
What does the primary pressure gauge on the tank tell us? That's right, the temperature. Put it on a scale if you want to know how much is in it...
Put some duct tape over the gauge - Or better yet - Replace the high pressure gauge with a plug - High pressure gauges are useless!

 
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