2 channel temperature controller

[signal2noise]

I am looking for a 2 channel temperature controller where I can hook up my chest freezer and a warming element at the same time to really dial in my fermentation temperature. I remember seeing a 2 channel controller in the past, but can't seem to find one now. I have looked on Austin and Hearts Hombrew Supply and Northern Brewer.

Any help is much appreciated.

 

[kladue]

Here is a panel mount dual channel controller from Dwyer http://www.dwyer-inst.com/PDF_files/TSS2.d.pdf, price is not too bad and it is relatively easy to setup.

 

[shortyjacobs]

Here you go:
Mini Digital Temperature Controller Thermostat Aquarium | eBay

Search "ebay temperature controller" on HBT here to find out how to use it. I have 2, both from quality_link (who was the first guy to offer these on eBay....now there are tons of imitators...), and they work great.

 

[signal2noise]

Thanks for the recomendations!

 

[audger]

any of the regular brand name or knockoff PID controllers will be able to do this too. you can do both heating and cooling at the same time by making use of the internal alarm relay. set the controller to cooling mode, hook up your fridge to the main relay, and then hook up your heater to the alarm relay. set the alarm to go off if it reaches a temperature that is too low.

you obviously need to determine if the internal relay can handle the load of the heater, or if you need a larger external relay, but the idea is the same.

 

[LordUlrich]

The only prepackaged 2 stage temp controller I know of is the ranco available from more beer.