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kiln cooling rate?

updated tue 10 jul 01

 

Fredrick Paget on sun 8 jul 01


John-
Yes the kiln Bartlow controller is type S and the Partlow was using a
type K.

I have a type R that I can use on the Partlow but I am too lazy to put
it on as I have to reprogram it and substitute an extension lead wire for
type R with a type R connector into the partlow terminal block. Right now
I have a type k extension wire and a type K Omega connector so it is easy
to unhook the K and carry the instrument around. I had the K on there
because we were using the instrument on the soda kiln at school ( It was
inside a porcelain disposable thermowell ) and I did not want to risk the
expensive type R.

Do you think the type S and R will track?

For those who are unclear as to what I am talking about here S and R
are two different kinds of platinum thermocouples and they are accurate to
a temperature beyond cone 12 while type k poops out at around cone 9.

I just got a CD from Orton that tells how to use a self supporting cone
to check the temperature to within 2 deg C in a kiln. I will try that to
calibrate the thermocouple pyrometers at the high end.

Fred


>Fred,
>
>Are the controller and the chart recorder on different types of
>thermocouples?
>
>John Baymore
>
>>The kiln controller and the Partlow did not track exactly. The kiln
>>controller was 14 degrees below the Partlow recorder at room temperature
>>and 47 degrees below the Partlow at the top end. At room temperature the
>>Partlow checks exactly with a precision Eastman Kodak 14 inch long mercury
>>photographic darkroom thermometer.
>>
>>

From Fred Paget, Marin County, California, USA

John Baymore on sun 8 jul 01



The kiln controller and the Partlow did not track exactly. The kiln
controller was 14 degrees below the Partlow recorder at room temperature
and 47 degrees below the Partlow at the top end. At room temperature the=

Partlow checks exactly with a precision Eastman Kodak 14 inch long mercur=
y
photographic darkroom thermometer. =



Fred,

Are the controller and the chart recorder on different types of
thermocouples?

Best,

..............................john

John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA

603-654-2752 (s)
800-900-1110 (s)

JohnBaymore.com

JBaymore@compuserve.com
John.Baymore@GSD-CO.com

"Earth, Water, and Fire Noborigama Woodfiring Workshop August 17-26,
2001"