FAY & RALPH LOEWENTHAL on wed 28 aug 96
Original question: Tom Gray - why does a digitial pyrometer register
inaccurately at higher temps?
Tom here in South Africa we can get our pyrometers calibrated
according to the tempratures we work at. The other possibility is that you are
using a "K" type thermocouple which are fairly
accurate at below 1200 C (cone 6 - we use metric here) and tend to go out at
higher tempratures. You could change to an "R" type (platinum rhodium), which
are more accurate at the higher tempratures. That is if your pyrometer allows
it, they
usually do.They are quite a bit more expensive, but if you use
one in a ceramic sheath then it lasts for years. Good luck from
the friendliest city, Port Elizabeth,
Ralph Loewenthal
centa uhalde on tue 31 mar 98
Hi folks,
It has been advised that I purchase a digital pyrometer instead of
calibrating the pyrometer that came with my used Cress Firemate electric
kiln. Any recommendations, considerations would be appreciated. Also, same
question on studio extruders. Thanks.
Centa
Santa Rosa, CA
The Kiln Guy on wed 1 apr 98
Hello everyone,
We supply Eurotherm digital controls for use as a digital pyrometer. This
is
considered an industrial control. They are extremely reliable & alot more
accurate than the typical pyrometer. The control can also be used to fire
the kiln - it has one ramp & can either soak or shut off the kiln at the
desired temperature (obviously, doing some wiring would be involved to use
it in this manner - not so if used solely as a pyrometer).
They are priced @ $225.00 US.
About the pugmill - the new Shimpo w/ attachable vacuum is quite nice & has
an attractive price.
Chris @ Euclid's Kilns and Elements
1-800-296-5456
Web Site: http://www.euclids.com
E-Mail: mail@euclids.com
kinoko@junction.net on wed 1 apr 98
At 07:54 3/31/98 EST, you wrote:
>----------------------------Original message----------------------------
>Hi folks,
>It has been advised that I purchase a digital pyrometer instead of
>calibrating the pyrometer that came with my used Cress Firemate electric
>kiln. Any recommendations, considerations would be appreciated. Also, same
>question on studio extruders. Thanks.
>
>Centa
>Santa Rosa, CA
>Centa,Digital pyrometers arelovely and cost from $300.00+, like the
FLUKE,all the way up to $3000.00 +...and they are lovely. For those of us
using eyeballs,cones and an old TC pyrometer,digitals are lovely toys.
Looking over our extensive collection of books with pictures going as far
back as pots appear to go,I can find nothing which beats any of the old
pots made with eyeballs,cones and experience and ofen resulting in the
great surprise. However, perhaps Crane toilet fixtures could help you with
an old digital py... with their enormous volume,they need such frills. At
the same time they have a few old,droopy-drawered kiln persons
around....just in case. Don & Isao.
DONPREY on wed 1 apr 98
Centra,
I believe that Fluke (that's the name of the company) makes a digital unit.
They have a good reputation for electronic equipment and I would feel
comfortable with that choice myself.
Don Prey in Oregon
Alexander Solla on thu 2 apr 98
Chris-
Saw the post on the dig. pyrometer. Wondering what type of thermocouple it
is using? Anyone out there with type N??
Alex Solla
in Utah where daffodills keep trying to bloom despite chilly nights
slpbm@cc.usu.edu
Eric and Karina Yoder on sat 4 apr 98
I just finished firing my wood kiln with my new fluke pyrometer. I had my
best firing yet and I atribute it to the pyrometer. It changed my stoking
scedual which brought out brighter colors in the clay and glazes. I got my
pyrometer from Axner but just saw it for almost $50 cheaper from grainger.
Eric
centa uhalde on sat 4 apr 98
Subject: Re: digital pyrometer
----------------------------Original message----------------------------
Chris-
Saw the post on the dig. pyrometer. Wondering what type of thermocouple it
is using? Anyone out there with type N??
I was wondering, what does one look for in purchasing a digital pyrometer?
Like in thermocouplers, for instance.
From the electronically dullwitted,
Centa
DWoodin521 on sun 5 apr 98
Type K is normally what you want. Omega also sells pyrometers. Look at
www.Omega.com
Stephen Mills on mon 6 apr 98
Type K thermocouples are only accurate up to 1200oC. For temperatures
higher, i.e. cone 6 upwards you need type R which uses a
Platinum/Rhodium element. Which ever you use make sure the Meter is
calibrated for the thermocouple type you have, or your readings will be
inaccurate.
Steve
Bath
UK
In message , DWoodin521 writes
>----------------------------Original message----------------------------
>Type K is normally what you want. Omega also sells pyrometers. Look at
>www.Omega.com
>
--
Steve Mills
Bath
UK
home e-mail: stevemills@mudslinger.demon.co.uk
work e-mail: stevemills@bathpotters.demon.co.uk
own website: http://www.mudslinger.demon.co.uk
BPS website: http://www.bathpotters.demon.co.uk
DWoodin521 on tue 7 apr 98
Type K is rated to 2300 deg F or 1260 deg C by the manufacturere if the wire
is protected.
David
Sandra K. Tesar on wed 8 apr 98
Edmonds Scientific catalogue has digital pyrometers...with type k
available I believe
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Dr. Don Morris on wed 8 apr 98
The other day, I found out that the old 1970-something briefcase sized
voltmeter I got at some electronics show for $25 has an input for type K
thermocouples. It is an old Fluke 8400A, with this odd sort of neon gas
(judging by the color) display with little wires inside bent into the shape
of numbers that glow. I have yet to get a thermocouple probe and play with
it though. It took me long enough to figure out how to test a battery with
it... five inputs on the front and needed to ask the guy I bought it from
where to plug everything in.
I am also researching how to build a (relatively?) low cost digital
pyrometer. This kind of research seems to be why the gods invented
patience, cold pizza, and Radio Shack.
Tom Morris
Welcoming back the almighty summer humidity!
Stuart Ridgway on thu 9 apr 98
I have a program that converts a ChromelP-Alumel thermocouple millivolt
reading to Centigrade and Fahrenheit Temperatures. The source code is 1.3k
and the executable DOS file is a little less than 4k. E-mail me if you wish
this program.
The source language is Pascal.
Stuart Ridgway
>----------------------------Original message----------------------------
>The other day, I found out that the old 1970-something briefcase sized
>voltmeter I got at some electronics show for $25 has an input for type K
>thermocouples. It is an old Fluke 8400A, with this odd sort of neon gas
>(judging by the color) display with little wires inside bent into the shape
>of numbers that glow. I have yet to get a thermocouple probe and play with
>it though. It took me long enough to figure out how to test a battery with
>it... five inputs on the front and needed to ask the guy I bought it from
>where to plug everything in.
>
>I am also researching how to build a (relatively?) low cost digital
>pyrometer. This kind of research seems to be why the gods invented
>patience, cold pizza, and Radio Shack.
>
>
>Tom Morris
>Welcoming back the almighty summer humidity!
>
David Coggins on fri 18 jun 99
Stuart,
Check our web page for information and prices on a DIGITEMP digital
pyrometer we manufacture.
A DIGITEMP meter plus type N thermocouple, sheath and lead will cost AU$260
plus freight - with the exchange rate that makes it about US$170 plus
freight. This is good for 1300 degrees C, runs off batteries or external
power, and is mounted in a powder coated aluminium box (not plastic!!) It
is accurate to within +/- 2%from 800 degreesC to 1300 degreesC. We have
sold hundreds with no problems.
Regards
David & Elaine Coggins
dercoggins@one.net.au
http://web.one.net.au/~dercoggins
Stuart Altmann on thu 24 jun 99
Would the company/couple in (?) Australia that makes their own digital
pyrometer, with a powder-coated aluminum case and type N thermocouple
please contact me again, personally? I lost your message from my computer
before I could respond. Thanks!
Stuart Altmann
email: salt@princeton.edu office 'phone: 609/258-4520
Bruce on Earthlink on fri 27 jun 03
looking for a low cost Pyrometer Digital . Any suggestions. Thanks
Bruce Michaels
Leonard Smith on sat 28 jun 03
For many years now I have used Digital Multi-meters and a set of
conversion tables as the gauge to a variety of thermocouples including
Types K N and R. Here in Australia such Meters can be had for US$15.
For a few dollars more there are many that have Type K readout as
standard, requiring no conversion at all. I have three of these and a
specialist Digital gauge that has two type K inputs and measures both
temps, gives max and min temps, automatically measures the differential
between them and percolates a great cup of coffee all for US$50.
I buy my thermocouple direct from a manufacturer who will make them to
order which comes in hand replacing them in small top loaders.
On Saturday, June 28, 2003, at 04:12 AM, Bruce on Earthlink wrote:
> looking for a low cost Pyrometer Digital . Any suggestions. Thanks
>
> Bruce Michaels
>
> _______________________________________________________________________
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Leonard Smith
leonardsmith@optusnet.com.au
Reg Brown on sat 28 jun 03
Bruce, check INTERNET site www.Ebay.com, I just bought one new for about 75%
off retail price. They also have used ones for much much lower. You can find
them under either "fluke" or "digital thermometer" or "pyrometer". Good luck!
Regards, Reg Brown
James Bowen on sun 29 jun 03
We prefer the Omega Digital thermometer to the Fluke. E-bay
is a good source. Be patient and a good buy will come your
way. I like the ones that handle two type K thermocouples.
We have paid $20-$50 delivered price.
"The measure of your quality as a public person, as a
citizen, is the gap between what you do and what you say"
--Ramsey Clark
David Coggins on sun 29 jun 03
CLAYART Digest - 27 Jun 2003 to 28 Jun 2003 (#2003-180)Bruce,
I make a small Digital Pyrometer, the DIGITEMP, which sells for approx
US$170, plus post from Australia.
Includes 10" type N or K thermocouple, protective sheath - direct reading in
degrees C.
Check my site at www.users.bigpond.com/dcoggins/digitempinformation.html for
more info.
Regards
Dave
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