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Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > ebay aquarium temp controller build
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Old 03-01-2011, 10:25 PM   #911
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I tried to find the answer but 90+ pages is a lot to wade through.

I just want to know if it is possible to use a 220v controller on a 110v circuit. I have read that the controller's display and logic will run on either 220v or 110v, but I haven't been able to find a clear answer as to whether it will trigger the switches and actually turn the outputs on and off.


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Old 03-01-2011, 11:34 PM   #912
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Originally Posted by 418Brewing View Post
I tried to find the answer but 90+ pages is a lot to wade through.

I just want to know if it is possible to use a 220v controller on a 110v circuit. I have read that the controller's display and logic will run on either 220v or 110v, but I haven't been able to find a clear answer as to whether it will trigger the switches and actually turn the outputs on and off.
Nope. It doesn't work. One guy tried, and it's exactly what you said. The display and temp reading part of the thing works, but the relays that switch on and off the heating and cooling circuits don't work.


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Old 03-02-2011, 12:28 PM   #913
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Can I just submerge the temp prob in my carboy in order to get the most acurate reading? I was thinking about just putting it through the bung, squeezing it right next to my airlock. Any other recommendations?
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Old 03-02-2011, 02:05 PM   #914
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I think that you'd be better off attaching it to the outside of your fermenter and then insulating it some to get more accurate readings. Sticking anything into the wort risks an infection IMO.
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Old 03-02-2011, 02:50 PM   #915
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Can I just submerge the temp prob in my carboy in order to get the most acurate reading? I was thinking about just putting it through the bung, squeezing it right next to my airlock. Any other recommendations?
Yes , but I'd use a ss thermowell in the stopper. I wouldn't directly put the probe into wort.

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Old 03-02-2011, 05:54 PM   #916
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I think that you'd be better off attaching it to the outside of your fermenter and then insulating it some to get more accurate readings. Sticking anything into the wort risks an infection IMO.
I can't stick it to the outside of the carboy if I'm using a FermWrap.

Which type of Thermowell would I need? I see different controllers require different types of Thermowell's.
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Old 03-02-2011, 06:58 PM   #917
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All you need is the ss tubing that had been crimped or soldered st the end of it. The stock price then goes down inside of it. the ranco one at my lhbs looked pretty easy to duplicate.

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Old 03-02-2011, 07:35 PM   #918
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so the inside of the SS tubing does not have liquid in it, correct?
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Old 03-02-2011, 10:02 PM   #919
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so the inside of the SS tubing does not have liquid in it, correct?
Correct it's hallow.

the ranco unit I looked at had two homes in the stopper.one for the airlock device and another for the thermowell the temp probe just dropped down into the thermowell from the top of the stopper

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Old 03-02-2011, 10:25 PM   #920
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I know people have asked before, but I dont think I have seen the answer. Has anyone discovered a replacement Temp Probe that will work with these controllers? I would like to have a second one that I can keep in a thermowell for my fermentation chamber, so i dont have to keep removing the one I have set up in the Kegerator.


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