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>We found that you can buy wire-wound ceramic resistors on hollow cores
>which work very well as tube heaters. They are extremely cheap (a few
>bucks a shot) and easily go up to 600 oC.
>
>We used 100 watt, 25 ohm resistors. They eventually burn out because the
>glassy insulation melts and they short. Wrapping them in asbestos tape
>or cement lengthens the life somewhat.
>
>They cost about $10 each.
>
> Henry
>-----------------------------------------------------------------------------
>Prof. Henry Schwarcz Tel: (905)525 9140 x24186
>University Professor
>Dept. of Geology Fax: (905)522 3141
>McMaster University
>Hamilton, Ontario, L8S 4M1 email: [log in to unmask]
>Canada
>-----------------------------------------------------------------------------
Henry,
That sounds like a good idea - where do you get these?
Hal
Dr. Haraldur R. Karlsson
Associate Professor
Department of Geosciences
and Department of Chemistry and Biochemistry (Joint)
Mailing Address:
Department of Geosciences
Box 1053,Texas Tech University
Lubbock, TX 79409
USA
Phones - (806)-742-3130 Office
(806)-742-3112 Stable Isotope Laboratory
Fax - (806)-742-0100
world-wide-web: http://www.ttu.edu/~geosc/
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