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Old 08-20-2003, 08:31 AM
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Mark Wilson Mark Wilson is offline
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temperature controller tutorial

i just went surplus shopping for kimberly (kbinkster) and purchased her a FUJI PYZ temperature controller and an Omron MK3 relay to make a temperature controller. i plan to wire it up to check it out before i mail it to her, and i plan to take photos to guide people through the process of making your own controller. so far the parts cost is a total of $25!!!!!!! with this hardware, i can add a digital temperature controller to any 110V kiln. i could controll a 220V kiln if i purchased a different relay. here is a picture of the hardware.
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Old 08-20-2003, 08:50 AM
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Teri.p Teri.p is offline
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Re: temperature controller tutorial

Quote:
Originally posted by Mark Wilson
and i plan to take photos to guide people through the process of making your own controller.

Mark --

That will be wonderful!!! Thanks in advance. I'm saving up for a kiln, and if I can shave some $$ off the cost it'll be that much sooner I can get one.

Teri
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Old 08-20-2003, 08:56 AM
Mike E etc Mike E etc is offline
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wow,
go Mark.

I am using a watlow, sp, controller just as a temp [email protected]$$#%^$!!!!!!!!!





Mike E
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Old 08-20-2003, 09:21 AM
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Mark Wilson Mark Wilson is offline
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Quote:
Originally posted by Mike E etc
I am using a watlow, sp, controller just as a temp [email protected]$$#%^$!!!!!!!!! Mike E
WHY?
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Old 08-20-2003, 10:19 AM
Just Nancy Just Nancy is offline
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Mark,
I anxiously await your attempt.

A friend tried to price parts to try this for me and wasn't successful.

I love your enthusiasm.

Nancy
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Old 08-20-2003, 12:53 PM
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BabsW BabsW is offline
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Mark, you're a gem!

Barbara
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Old 08-20-2003, 05:31 PM
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dragonflylane dragonflylane is offline
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Hi Mark!

That would be awesome! My stepdad is an aero engineer (the man can make me feel stupid talking about waffles!) and I was thinking about proposing the idea of him building me a digital controller. Hell...if he can wire the instrument panel in leir jets this would be child's play, right?

Could you build your own kiln as well? Or is that just asking for a spot on the Darwin Award list?
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Old 08-20-2003, 07:40 PM
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Mark, you couldn't have posted this at a better time!! I'll be watching anxiously for your posts!!!

Dawn
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Old 08-20-2003, 09:09 PM
Rexxy Rexxy is offline
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Will you be putting this information on your new CD that you are making?

Rex
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Old 08-20-2003, 09:37 PM
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And I thought that I was going to have to wait for the video/DVD

Mark, you're a sweety!!!!

Sara
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Old 08-21-2003, 01:47 AM
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I'm the luckiest girl on WC!
Thanks again, Mark, I am so grateful!!!
~Kimberly
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Old 08-21-2003, 07:39 AM
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the basic temperature controller consists of 3 major items, a thermocouple to sense the temperature, a temperature controller module to use the thermocouple reading to control the kiln, and a power relay to actually turn the power on and off. here is a "basic" temperature controller circuit.
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Old 08-21-2003, 07:41 AM
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Mark Wilson Mark Wilson is offline
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temperature controller modules come in different sizes and shapes and have a variety of different control outputs including relay, ssr, scr or triac, 4-20 ma, or 0 to 5 volt. here is a picture of a few of these modules i purchased at a surplus store. the little one out front with the knob is an infinite controller which don't control temperature but adjust it.
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Old 08-21-2003, 07:45 AM
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most of the power relays i use are either solid state relays (ssr) or standard electro-mechanical relays. solid state relays are made up of electronic components called triacs. they can be switched on and off real fast, but they also are very temperature sensitive. em relays cannot be switched very fast, but they fail safe unlike a ssr.
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Old 08-21-2003, 07:47 AM
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most em relays are essentially switches which get flipped when a actuation coil is energized. usually, em relays have 1, 2, or even 3 seperate contacts inside that get switched. i connect all 3 sets of contacts in parallel so that you can get more power control. if a single contact can handle 10 amps, 3 in parallel can control 30 amps. with no power applied to the actuation coil, the contacts are connected to the NC or normally closed contact. when actuated, the contacts are connected to the NO or normally open contacts.
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Last edited by Mark Wilson : 08-21-2003 at 07:49 AM.
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