Andrew Berends on thu 17 oct 96
SEARCHING FOR A USED CO2 ANALYZER/OXY PROBE. ANYONE?? ANYONE??
Natalie in Please reply to: midiclay@sover.net
Vermont
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Kenneth D. Westfall on wed 23 oct 96
At 10:43 PM 10/17/96 +0000, you wrote:
>----------------------------Original message----------------------------
>SEARCHING FOR A USED CO2 ANALYZER/OXY PROBE. ANYONE?? ANYONE??
>
>Natalie in Please reply to: midiclay@sover.net
>Vermont
>
>------------------------------------------------------------------------------
Sorry don't know of and used analyzers but for anyone interested in a new
one here are some places to check.
Bacharach Instrument Ph:412-963-2157 They make CO2 analyzers
Pittsburgh, PA. fax: 412-963-2091
They can provide local Dist list.
or
Order from Alley & Rader 1-800-888-3659
Located in North Carolina (They seem to like potters).
or
Order from Edward Smyers Co. 1-800-245-6335
Located in Pittsburg, PA.
DON'T GET STUCK IN THE MUDPIES--K & T
Leslie McPherson on thu 25 jun 98
Jeff...could you go into detail a little more about the CO2 analyzer? What
it is exactly, where to get it?
Leslie
>----------------------------Original message----------------------------
>Emily,
>
>I use an highly recommend a CO2 analyzer. Then reduce lightly from 1500 to
>cone 10, never heavy. I have a 16 cuft up draft and get copper reds from
>bottom to top every firing.
>
>Jeff Walker
>Burning up in missouri
>jdpotter@iland.net
>
>-----Original Message-----
>From: Emily Muench
>To: Multiple recipients of list CLAYART
>Date: Tuesday, June 23, 1998 7:29 AM
>Subject: Re: Reduction firing
>
>
>>----------------------------Original message----------------------------
>>I'm having a problem firing the reduction kiln at a studio
>situation........we
>>are trying for some consistantancy and are not able to reach
>success.....one
>>firing we'll have copper reds in many areas of the kiln....the very next
>>firing, the copper reds are clear and runny, crackled also????? I would be
>so
>>very pleased if a reduction potter would post a firing schedule on this
>list,
>>we were told our kiln is in reduction the entire firing. We have some black
>>smoke at the peeps from the time cone 7 is down in the front of the
>>kiln......we have one peep on each of the sides towards the back of the
>>kiln.....we then watch the cones in that area....when 9 is bending, we
>close
>>the damper and primary air on each of two burners, reduce for 15 minutes,
>>black smoke is pouring out of every crevise and peeps.......then we open
>the
>>damper and primary airs for a few moments to clean the kiln atmosphere and
>>turn off the gas. We close the ports, close the damper and of course the
>>peeps have been plugged, allow the kiln to cool for a week.........opened
>it
>>this morning to find some runny glazes..most successful.........but no
>>reds!!!!! Everyone is so very disappointed when this happens....I need some
>>professional advice.........please......and thank you. I do enjoy this list
>>very much!
>>
J. D. Walker on fri 26 jun 98
leslie,
The co2 analyzer can be purchased through Axner (www.axner.com). It is a
monitoring device which allows you to regulate the atmosphere in your kiln
forconsiustent firing results. an Oxyprobe will do the same thing, but cost
twice as much. both will as well help cut fuel costs by being more
effiecent with your fuel usage.
If you have more questions, or would like a copy of one of my firing
schudels please e-mail me direct.
jeff, jdpotter@iland.net http://www.iland.net/~jdpotter
where its really hot in missouri.
-----Original Message-----
From: Leslie McPherson
To: Multiple recipients of list CLAYART
Date: Thursday, June 25, 1998 9:14 AM
Subject: CO2 analyzer
----------------------------Original message----------------------------
Jeff...could you go into detail a little more about the CO2 analyzer? What
it is exactly, where to get it?
Leslie
>----------------------------Original message----------------------------
>Emily,
>
>I use an highly recommend a CO2 analyzer. Then reduce lightly from 1500 to
>cone 10, never heavy. I have a 16 cuft up draft and get copper reds from
>bottom to top every firing.
>
>Jeff Walker
>Burning up in missouri
>jdpotter@iland.net
>
>-----Original Message-----
>From: Emily Muench
>To: Multiple recipients of list CLAYART
>Date: Tuesday, June 23, 1998 7:29 AM
>Subject: Re: Reduction firing
>
>
>>----------------------------Original message----------------------------
>>I'm having a problem firing the reduction kiln at a studio
>situation........we
>>are trying for some consistantancy and are not able to reach
>success.....one
>>firing we'll have copper reds in many areas of the kiln....the very next
>>firing, the copper reds are clear and runny, crackled also????? I would be
>so
>>very pleased if a reduction potter would post a firing schedule on this
>list,
>>we were told our kiln is in reduction the entire firing. We have some
black
>>smoke at the peeps from the time cone 7 is down in the front of the
>>kiln......we have one peep on each of the sides towards the back of the
>>kiln.....we then watch the cones in that area....when 9 is bending, we
>close
>>the damper and primary air on each of two burners, reduce for 15 minutes,
>>black smoke is pouring out of every crevise and peeps.......then we open
>the
>>damper and primary airs for a few moments to clean the kiln atmosphere and
>>turn off the gas. We close the ports, close the damper and of course the
>>peeps have been plugged, allow the kiln to cool for a week.........opened
>it
>>this morning to find some runny glazes..most successful.........but no
>>reds!!!!! Everyone is so very disappointed when this happens....I need
some
>>professional advice.........please......and thank you. I do enjoy this
list
>>very much!
>>
Donn Buchfinck on thu 29 oct 98
where does someone goto to buy a Co2 analyzer
how much does it cost??
the actual thing and the long silica tubes
thanks
Donn Buchfinck
Rafael Molina-Rodriguez (Rafael Molina-Rodriguez) on fri 30 oct 98
------------------
Donn:
IMHO, from my experience I would discourage you from buying a Co2 analyzer. =
My
recommendation is to purchase an Oxyprobe. I know the probe is more =
expensive,
but I believe it is a better instrument for determining the atmosphere in =
the
chamber during firing.
Rafael
=3E=3E=3E Donn Buchfinck =3CNudefigure=40aol.com=3E 10/29/98 07:55am =
=3E=3E=3E
----------------------------Original message----------------------------
where does someone goto to buy a Co2 analyzer
how much does it cost??
the actual thing and the long silica tubes
thanks
Donn Buchfinck
Kenneth D. Westfall on sun 1 nov 98
Donn,
As to where to buy a CO2 analyzer....you can get a couple different brands
from WW Grainger (check out www.grainger.com) I think the Bacharach brand
is the best out there....it is very reliable and has withstood the stand of
time. You can also buy an O2 analyzer....be sure of what you want to
sample....carbon MONOXIDE or carbon DIOXIDE, or OXYGEN before making your
purchase. Also, you can usually buy these type test instruments from
heating supply houses such as PAMECO, which has branches throughout the
USA. Also, consider the temperature range you fire at; you may need an
industrial sampling assembly to withstand the air temperature of the
sample....the sales agent should be able to help you there, but know the
temp not the cone.
As for the silica tubes....well that may be a bit more difficult...maybe
Axner or Bailey can help. The last one I got, I traded pots for the tube
with a sales rep for a company who made the tubes....we are using mullite
right now, but have used hi-alumina and quartz tubes before. I think the
mullite has held up the best, but needs to be permanently installed in kiln
wall so that it is not subjected to high thermal shock. The mullite and
hi-alumina won't take the thermal shock the way the quartz did. An OXYGEN
analyzer is probably the best way to define reduction and you get a
pyrometer all in one. That unit though, is not made by Bacharach, but I
can't recall the brand. I think Axner has one advertised and Ceramics
Monthly had an advertisement for another brand. The pros for Bacharach is
long-proven accuracy and durability. The con for Bacharach is the use of a
sodium hydroxide compound (chemical) which is somewhat hazardous as a
corrosive and there is a extra charge for shipment of the chemical, which
does need to be replaced after several samplings. Even so, a bottle of the
chemical lasts for a long time...a couple years. The pros to the digital
meters are... no chemicals, instantaneous readout, usual includes pyrometer
too. The cons to the digital....higher cost, a sensor replacement is often
required after a given period of time, more 'hi-tech' if you have a
aversion to technical stuff. Well, hope this helps. I could probably
locate the name of someone who might help find the hi-temp tube if you have
no luck at that.
Sincerely,
At 08:55 AM 10/29/98 EST, you wrote:
>----------------------------Original message----------------------------
>where does someone goto to buy a Co2 analyzer
>how much does it cost??
>
>the actual thing and the long silica tubes
>
>thanks
>
>Donn Buchfinck
>
Tracey L. Westfall
Pine Hill Pottery
RD#2 Box 6AA
Harrisville, WV 26362
pinehill@ruralnet.org
Kathi LeSueur on mon 2 nov 98
In a message dated 11/1/98 4:27:14 PM, you wrote:
>As for the silica tubes....well that may be a bit more difficult...maybe
>Axner or Bailey can help. The last one I got, I traded pots for the tube
>with a sales rep for a company who made the tubes...
Superior Glass Blowing in Ann Arbor, MI has quartz tubes available at a very
reasonable price. I bought 6 for about $15 several years ago. Their number is
734/482-8744.
Kathi LeSueur
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