Fredrick Paget on wed 24 apr 02
Definitly the probe should be protected in a salt or soda kiln. The vapor
will attack the probe insulators and probably the wire too.
I used my good pyrometer in the community college soda kiln with a
porcelain tube I made by means of an extruder and bisqued.
I made several at one time and sure enough they are expendable. Somebody
else took down the bricked up door and the tube was broken. I think it got
stuck in the bricks since we put it through a space between door bricks and
then sealed it with wadding. (The probe was previously removed before the
breakage).
I see no reason why you couldn't permantly mount a tube in the side wall of
the kiln. Omega sells alumina tubes and they should stand up to salt or
soda. They run around 30 dollars US as I recall.
You could even use a porcelain one if you coat it with soda kiln wash
containing about 50 -50 aluminum hydroxide - EPK.
Fred
,,,,,,,,, digital pyrometer.,,,,,
>
>must the probes be mounted inside the kiln, or can they be temporarily
>inserted in spyholes or salt ports?
>
>will the probes need protection in a soda or salt kiln ? axner sells a
>'protection tube', a sheath to cover a probe. will this suffice?
>
>thanks, brian
>
From Fred Paget, Marin County, California, USA
Brian Molanphy on wed 24 apr 02
greetings,
i would like to buy a digital pyrometer. i'm watching ebay; if anyone has
other leads, do tell.
must the probes be mounted inside the kiln, or can they be temporarily
inserted in spyholes or salt ports?
will the probes need protection in a soda or salt kiln ? axner sells a
'protection tube', a sheath to cover a probe. will this suffice?
thanks, brian
Craig Edwards on wed 24 apr 02
>
>Hello Brian;
Yes, the probe will need protection, and the sheath will provide it.
I've regularly build them into doors temporarily-- the sheath will crack if
you take it out when the kiln is hot! so don't put the probe into or take
out of a hot kiln-- the voice of experience is talking here-- the sheath
will break and you will feel stupid, in that order.
I don't have any magic connections on cheap buys--but there was a thread
awhile back you might look at.
Hope this helps.
Craig Edwards
New London MN
>
>i would like to buy a digital pyrometer. i'm watching ebay; if anyone has
>other leads, do tell.
>
>must the probes be mounted inside the kiln, or can they be temporarily
>inserted in spyholes or salt ports?
>
>will the probes need protection in a soda or salt kiln ? axner sells a
>'protection tube', a sheath to cover a probe. will this suffice?
>
>thanks, brian
>
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Hank Murrow on wed 24 apr 02
>Brian wrote;
>
>i would like to buy a digital pyrometer. i'm watching ebay; if anyone has
>other leads, do tell.
>
>must the probes be mounted inside the kiln, or can they be temporarily
>inserted in spyholes or salt ports?
>
>will the probes need protection in a soda or salt kiln ? axner sells a
>'protection tube', a sheath to cover a probe. will this suffice?
>
Dear Brian;
If you are mounting an OxyProbe with atmosphere sensor, you
can add a half-inch alumina protection tube, siting the end of the
probe about 3/8" -1/2" inside the open tube. If you are only mounting
a pyrometer (temp only) you can mount it inside a closed tube.
Regards, Hank
Cheryl Hoffman on wed 24 apr 02
In a message dated 04/24/02 6:00:11 PM Eastern Daylight Time,
craigledwards@HOTMAIL.COM writes:
> Craig Edwards
> New London MN
> >
> >i would like to buy a digital pyrometer. i'm watching ebay; if anyone has
> >other leads, do tell.
> >
> >must the probes be mounted inside the kiln, or can they be temporarily
> >inserted in spyholes or salt ports?
>
Uncanny timing of your question...I'm sitting here with my brand new Fluke
52
- II digital, which I managed to ruin in a few short minutes! Duh...you
might be a newbie potter if you just stick the probe in the peep
hole..."Directions...we don't need no stinkin' directions"...said my hubby,
who by the way, has 25 years experience working next to a glass furnace. I
sure will listen with interest to any advise on this topic. And as far as
the directions...post-goof I did try to read the direction booklet...Rocket
Science...not in my life time could I decipher what it's talking about!
Feeling very stupid, Cher Hoffman
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