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getting a thermocouple into a saggar (and keeping it alive)

updated wed 21 apr 04

 

Dave Finkelnburg on mon 19 apr 04


Tim,
You may want to consider a long thermocouple, and set up your saggar so
the thermocouple extends from the outside of the kiln into the saggar. As
I'm sure you know, temperature measurement takes place at the junction of
the thermocouple, the point where the two wires are welded together, at the
tip. With this arrangement you can use standard thermocouple wire on the
outside of the kiln.. And unless your Raku kiln is pretty large, you really
won't need a thermocouple that is all that long. An 18-inch or 1/2-meter
long thermocouple should be plenty.
Good firing!
Dave Finkelnburg

----- Original Message -----
From: "Tim McCracken"
Sent: Monday, April 19, 2004 5:41 PM
> I am going to be doing some saggar firing in a Raku kiln and would like
> to get a thermocouple into the saggar, as opposed to in the kiln but
> outside of the saggar. Has anyone done this? Specifically, I am looking
> for a thermocouple and thermocouple wire that will survive the full kiln
> temperature on the way into the saggar.

Tim McCracken on mon 19 apr 04


I have trolled the Archives for info on saggars and pyrometry, and not
found quite what I am looking for.

I am going to be doing some saggar firing in a Raku kiln and would like
to get a thermocouple into the saggar, as opposed to in the kiln but
outside of the saggar. Has anyone done this? Specifically, I am looking
for a thermocouple and thermocouple wire that will survive the full kiln
temperature on the way into the saggar. The generic wire typically used
to attack to probes that poke through kiln walls are not rated for
temperatures that high.

Omega has some OMEGACLAD XL stuff that seems like it might fit the bill
- anyone with experience?

Thanks,
Tim

Tim McCracken
timsmccracken@yahoo.com