Dan Tarro on tue 12 jan 99
Looking for what is out on the market in PC driven controllers that
monitor temps. and atmosphere where you could set up ramps in both areas
( temp & atmosphere ) with a gas kiln. Has anyone on the list used one of
these animals? Who is manufacturing them? What has been your experiences
with them. Any and all info would be welcome. thanks,
Dan Tarro
Oak Tree Stoneware
Ham Lake, Minnesota
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Vince Pitelka on wed 13 jan 99
At 09:57 AM 1/12/99 -0500, you wrote:
>----------------------------Original message----------------------------
>Looking for what is out on the market in PC driven controllers that
>monitor temps. and atmosphere where you could set up ramps in both areas
>( temp & atmosphere ) with a gas kiln. Has anyone on the list used one of
>these animals? Who is manufacturing them? What has been your experiences
>with them. Any and all info would be welcome. thanks,
>Dan Tarro
>Oak Tree Stoneware
>Ham Lake, Minnesota
>
Dan -
You are talking about an EXTREMELY expensive and complex setup, since it
requires individual servo motors or hydraulic/air actuators to operate
damper, gas, and air controls. Hooking all of that to a computer so that it
controls them independently in order to regulate both temperature and
atmosphere is another matter altogether. Most of the programmable computer
control systems stems for studio gas kilns on the market, like the one
available for Alpine kilns, control temperature only, and are based on
specific ramps determined with a very predictable kiln and very predictable
laboratory circumstances. When you operate them in your studio they often
give very different results. Adding the Alpine programmable system to an
existing kiln costs thousands of dollars.
As for the kind of system you are talking about, I'd love to know if there
is anyone out there who has installed one on a studio gas kiln.
Good luck -
- Vince
Vince Pitelka - vpitelka@DeKalb.net
Home 615/597-5376, work 615/597-6801, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Jonathan Kaplan on thu 14 jan 99
>----------------------------Original message----------------------------
>At 09:57 AM 1/12/99 -0500, you wrote:
>>----------------------------Original message----------------------------
>>Looking for what is out on the market in PC driven controllers that
>>monitor temps. and atmosphere where you could set up ramps in both areas
>>( temp & atmosphere ) with a gas kiln. Has anyone on the list used one of
>>these animals? Who is manufacturing them? What has been your experiences
>>with them. Any and all info would be welcome. thanks,
>>Dan Tarro
>>Oak Tree Stoneware
>>Ham Lake, Minnesota
>>
>
I concur with Vince. What you describe is available and very costly.
'
We have a fairly simple system on our gas kiln developed by Jim Cooper at
Cooperworks Kilns Co,
Uses a Syscon controller coupled with a Honeywell flame rectification
system. Has 3 available "programs" within the controler 1. fire to set
point, turn off. 2. fire to set point, hold that temperature and 3. fire to
set point, cool to another lower set point, and cycle between the two.
Flame rectification on the pilot, very dependable.
It is a forced air system, and I use an oxyprobe separate of course from
the controller system. It is a very slick system and with the proper tuning
and retorfitting of some components (new Pyronics pilots and North AMerican
limiting orfice valves), it functions quite well and I am pleased with it.
Jonathan
Jonathan Kaplan, president
Ceramic Design Group LTd/Production Services
PO Box 775112
Steamboat Springs, CO 80477
(970) 879-9139 voice and fax
http://www.sni.net/ceramicdesign
Robert Santerre on thu 14 jan 99
About two years ago Paul Geil (Geil Kilns 800 887-4345 ) told me he was
developing such a system. Haven't seen it advertized yet, but he might have
got it done by now. As he described the problem, it's tricky to match what
the human brain does (watch the cones and flame and make a judgement when to
add or remove fuel versus when to open or close the damper). Hard to get the
two monitors (temp and oxy probe) to quit fighting with each other.
If you talk with him, I'd like to hear about his progress too.
Bob
rfsanterre@iquest.net
/////////////////////////////////////////////////////
Dan Tarro wrote:
> ----------------------------Original message----------------------------
> Looking for what is out on the market in PC driven controllers that
> monitor temps. and atmosphere where you could set up ramps in both areas
> ( temp & atmosphere ) with a gas kiln. Has anyone on the list used one of
> these animals? Who is manufacturing them? What has been your experiences
> with them. Any and all info would be welcome. thanks,
> Dan Tarro
> Oak Tree Stoneware
> Ham Lake, Minnesota
>
> ___________________________________________________________________
> You don't need to buy Internet access to use free Internet e-mail.
> Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
> or call Juno at (800) 654-JUNO [654-5866]
Earl Brunner on fri 15 jan 99
Yeah, Geils got it, I've got it on my kiln, I just never use it. The reason?
It might work for a bisque where you are not messing with the damper or
reduction, but otherwise how do you do the reduction? The control will control
the rate of climb as long as no damper/air adjustments need to be made, but how
do you do a reduction firing that way? Further, my experience says that the
damper has to be open different amounts at different temperatures to get good
combustion and heat climb.
Earl Brunner
Robert Santerre wrote:
> ----------------------------Original message----------------------------
> About two years ago Paul Geil (Geil Kilns 800 887-4345 ) told me he was
> developing such a system. Haven't seen it advertized yet, but he might have
> got it done by now. As he described the problem, it's tricky to match what
> the human brain does (watch the cones and flame and make a judgement when to
> add or remove fuel versus when to open or close the damper). Hard to get the
> two monitors (temp and oxy probe) to quit fighting with each other.
>
> If you talk with him, I'd like to hear about his progress too.
>
> Bob
> rfsanterre@iquest.net
>
> /////////////////////////////////////////////////////
> Dan Tarro wrote:
>
> > ----------------------------Original message----------------------------
> > Looking for what is out on the market in PC driven controllers that
> > monitor temps. and atmosphere where you could set up ramps in both areas
> > ( temp & atmosphere ) with a gas kiln. Has anyone on the list used one of
> > these animals? Who is manufacturing them? What has been your experiences
> > with them. Any and all info would be welcome. thanks,
> > Dan Tarro
> > Oak Tree Stoneware
> > Ham Lake, Minnesota
> >
> > ___________________________________________________________________
> > You don't need to buy Internet access to use free Internet e-mail.
> > Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
> > or call Juno at (800) 654-JUNO [654-5866]
Cameron Harman on sat 16 jan 99
Dan,
I know a number of people think that what you want is terribly
costly, but you need to define "terribly". I think what you want
can be done rather simply with modern industrial controls, I have
just done so for a new dryer application and did not find it very
expensive at all.
A two loop programmable controller is not very expesnive and the
contrl valves or relays anre also quite inexpensive. Call if you
have questions.
Cameron
--
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Cameron G. Harman, Jr. 215-245-4040 fax 215-638-1812
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Ceramic Services, Inc 1060 Park Ave. Bensalem, PA 19020
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