[PSUBS-MAILIST] oven pics

[Alan James]

Brian,
I haven't looked in to this unit deeply, but there are a lot of items like
it on Ebay, that control kilns. 
http://www.ebay.com/itm/Professional-Ramp-Soak-Temperature-Controller-Kiln-SSR-Kit-Ceramic-Thermocouple-/121092751234

You may be able to just cut the power cord going in to your oven & connect it to the relay.
If you have a number of view ports to anneal it would save you some sleep.
Alan


________________________________
 From: Brian Cox <brian at ojaivalleybeefarm.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Thursday, March 27, 2014 10:05 AM
Subject: Re: [PSUBS-MAILIST] oven pics
 


Hi Alan,
               I haven't actually gone through the whole cycle yet, I just tested it for about 6 hours just to see how bad the temperature swings were going to be.  I was please to see that the temperature lags very slowly in the acrylic compared to the other temperature sensor.  I'm confident that I can follow the annealing chart very closely.   I also wanted to arrange the two hold times ( for the normalizing run) so that they occur in the early morning so I can sleep !   I need to be actively monitoring the cool down periods.
 
Brian
 
 
--- alanlindsayjames at yahoo.com wrote:

From: Alan <alanlindsayjames at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] oven pics
Date: Thu, 27 Mar 2014 08:37:23 +1300


Good idea using the ceramic Brian. 
Did you manage to keep within the required temperature range?
Alan

Sent from my iPad

On 27/03/2014, at 4:29 am, "Brian Cox" <brian at ojaivalleybeefarm.com> wrote:


Here are some shots of my annealing oven.  I was able to recruit my friend who fires tile, he had some ceramic pieces that we fit in the oven to help shield the direct radiation of the heating elements.  Also with the extra mass of all the ceramic it improved the heat sink storage and made for more even temperature changes.
> 
> 
>Brian
> 
<oven21.jpg>
<probe-in-acrylic1.jpg>
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