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-   -   Ranco for Element Control (http://www.homebrewtalk.com/f170/ranco-element-control-367612/)

Antler 11-14-2012 12:49 AM

Ranco for Element Control
 
Been considering doing 1 gallon BIAB to play with some recipes and not have to worry about have 5 gallons of not-so-great beer sitting around.

Had planned on stovetop, but then I got to thinking about electric. I already have a Ranco single stage temp controller here somewhere I'm not using. I'm sure I could round up an old tea kettle for the element.
Would it be as simple as mounting it in the pot, plug it in and go brewing?

Tinga 11-14-2012 01:05 AM

do they make the tea kettle things in a one gallon size? I know thats not what youre saying but that would be worth looking into.

You may be able to find a small water heater element that would be cheaper than you could find a tea kettle element for. Just make sure to check the amp rating on the ranco and stay within that range when finding an element.

Antler 11-14-2012 01:08 AM

Quote:

Originally Posted by Tinga
do they make the tea kettle things in a one gallon size? I know thats not what youre saying but that would be worth looking into.

You may be able to find a small water heater element that would be cheaper than you could find a tea kettle element for. Just make sure to check the amp rating on the ranco and stay within that range when finding an element.

Amp rating for the Ranco is 16 amps. I was thinking about the water heater element as well. Anyone done this?

Tinga 11-14-2012 01:11 AM

indeed. thats what most people use to do electric brewing. you can buy water heater elements for less than 10 bucks and wire them up with a cord rated for the amperage.

Antler 11-14-2012 01:43 AM

Quote:

Originally Posted by Tinga
indeed. thats what most people use to do electric brewing. you can buy water heater elements for less than 10 bucks and wire them up with a cord rated for the amperage.

Awesome! This will be my "pilot" system, so for 20-30 bucks I can upgrade to electric! Great!

jeffmeh 11-14-2012 11:41 AM

Are you aware that you may not be able to achieve the same fine control over the temperature as you could with a PID? Something to consider....

Antler 11-14-2012 02:46 PM

Quote:

Originally Posted by jeffmeh
Are you aware that you may not be able to achieve the same fine control over the temperature as you could with a PID? Something to consider....

No I didn't know that. Is the Ranco known to be off by a few degrees or something?

jCOSbrew 11-14-2012 03:51 PM

A PID + SSR can pulse width modulate the element when it approaches the process temp to prevent overshoot. The Ranco will have simple ON/OFF control. Both types of controllers are limited by the location of the temp sensor and the consistency of the temp through out the fluid so stir or recirculate when you approach your process temp for better repeatability.

jeffmeh 11-14-2012 04:21 PM

jCOSbrew is correct. If you use a PID like the Auber 2352, it even has software that will "learn" your system characteristics and automatically modulate (pulse on and off to effectively reduce the heating output) the element to prevent overshoot. With the Ranco, the element is 100% on until you hit your setpoint and will likely overshoot, then 100% off until it drops below your differential, then 100% on and likely overshooting again.

Antler 11-14-2012 05:15 PM

Quote:

Originally Posted by jeffmeh
jCOSbrew is correct. If you use a PID like the Auber 2352, it even has software that will "learn" your system characteristics and automatically modulate (pulse on and off to effectively reduce the heating output) the element to prevent overshoot. With the Ranco, the element is 100% on until you hit your setpoint and will likely overshoot, then 100% off until it drops below your differential, then 100% on and likely overshooting again.

So the Ranco is not a good idea? I'm always there stirring during the mash. I figured the Ranco would be an increase over propane burner


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