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Old 08-23-2008, 03:03 AM   #1
Gabrew
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Default Which of these two temperature controllers is the better choice?

Hey everyone. I`ve been thinking of using a chest freezer as a fermentation chiller. I`ve found two temperature controllers, one from northern brewers and a cheaper version off ebay...

http://www.northernbrewer.com/temp-control.html

http://cgi.ebay.ca/Ranco-Electronic-Temperature-Controller-ETC-111000-New_W0QQitemZ270266821737QQihZ017QQcategoryZ38172Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

Both units seem to operate in the same manner.

Thanks.

Gabriel



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Old 08-23-2008, 03:26 AM   #2
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I have that Ranco and it has worked great. No issues with wiring it and super easy to program. Of course, you need to wire the power on the Ranco.

The digital controller at NB is pre-wired. If you don't feel comfortable doing the wiring yourself this would be the one you want to pick.



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Old 08-23-2008, 05:50 AM   #3
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Or even better yet, buy one of these PID controllers:

http://cgi.ebay.com/WATLOW-SERIES-93BB1KA000RR-TEMPERATURE-CONTROLLER_W0QQitemZ250284612593QQihZ015QQcategory Z97184QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Then it will display the set point and your process variable (set temp and actual). You would have to do a small amount of wiring and find a thermocouple to read temp but it would be very accurate.

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Old 08-23-2008, 11:47 AM   #4
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You will have to do a lot of wiring for that Watlow controller, the relay can only handle 1/2 amp. True they are better for industrial environments, but for keg fridge type applications the lack of an enclosure and the amount of wiring just isn't worth it.

I got a Ranco off e-bay - there are some out there for less than the $45 OP found.

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Old 08-23-2008, 10:47 PM   #5
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Thanks everyone.

Is the ranco difficault to wire?

Thanks

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Old 08-23-2008, 10:50 PM   #6
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Quote:
Originally Posted by Gabrew View Post
Thanks everyone.

Is the ranco difficault to wire?

Thanks
It's pretty easy.

http://pumpkinpicker.auburnbrewclub.org/2008/01/27/wiring-a-ranco-etc-111000-000-single-stage-rheostat/

Here's a good walk through.
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Old 08-23-2008, 10:59 PM   #7
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Looks awesome.

thanks mate

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Old 08-27-2008, 05:22 PM   #8
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Another +1 (well 4) for the Ranco's. Easy to wire cheap and easy to program. PID controllers are great but a PITA to program.



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