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Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > temp controller
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Old 01-03-2010, 10:21 PM   #1
LKHA
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Default temp controller

looking for temp controller I can use for many aspects. in winter I need a way to control a heat source for ferment,conditioning, and yes laggering. and able to control for a freezer was thinking a a419. any other options and any idea for the best place to purchase thank in advance


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Old 01-03-2010, 10:47 PM   #2
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This is really an equipment question, not a DIY. I know a lot of people use Johnson or Ranco controllers. Me, I built my own opamp controller to run off of a thermistor array.


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Old 01-04-2010, 12:25 AM   #3
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The Johnson A419 is an excellent choice. The analog Johnson will also work and it's about $30 cheaper. I have one of the digital units and several of the analog ones. Either can be used for heating or cooling.
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Old 01-04-2010, 01:18 AM   #4
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do you have a part #for the johnson. would this on be a canidate



http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT

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Old 01-04-2010, 02:41 AM   #5
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I can't get that link to work, but it appears to be a Ranco controller although I'm not sure which model it is.

Here's a link to the Johnson digital from Northern Brewer:

http://www.northernbrewer.com/brewin...ontroller.html

and the Johnson analog model:

http://www.northernbrewer.com/brewin...hermostat.html

Looks like there's only about a $20 difference in price. It's difficult to find the Johnson controllers at a discount, although used ones show up occasionally on Ebay and such.
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Old 01-04-2010, 02:45 AM   #6
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I have both the Johnson A419 and a Ranco digital single-stage. Both are great, but for your application, you are much better off with the Ranco unit. With it, you can switch from heating to cooling mode via the digital interface on the panel. With the Johnson you have to open it up and switch around a jumper.
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Old 01-05-2010, 01:51 AM   #7
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ETC-111000 is the model number if you tell me it will work i will order 2 in am thanks again.
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Old 01-05-2010, 03:15 AM   #8
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Quote:
Originally Posted by dwarven_stout View Post
This is really an equipment question, not a DIY. I know a lot of people use Johnson or Ranco controllers. Me, I built my own opamp controller to run off of a thermistor array.
(Apologies for the hijack)

Do you happen to have a schematic and a parts list? Now THAT would be a DIY project. I'm trying to find a cost-effective way to set up both an ale chamber (heat to 70F) and a lager chamber (chill to 50F)

-Arch
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Old 01-05-2010, 03:36 AM   #9
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Quote:
Originally Posted by LKHA View Post
ETC-111000 is the model number if you tell me it will work i will order 2 in am thanks again.
That's the same Ranco I use to heat my fridge in the winter and cool it in the summer. Exceptional piece of equipment.
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Old 01-05-2010, 03:39 AM   #10
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Quote:
Originally Posted by archiefl98 View Post
(Apologies for the hijack)

Do you happen to have a schematic and a parts list? Now THAT would be a DIY project. I'm trying to find a cost-effective way to set up both an ale chamber (heat to 70F) and a lager chamber (chill to 50F)

-Arch
I can't help with a true DIY solution, but for heating your ale chamber, you will be hard pressed to find a cheaper solution than this:

http://www.mcmaster.com/#17395K93

$15 heating-only 120 vac temp controller (50 - 90 F).


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