Hi all,

Our TCEA on our MAT253 stopped heating. We can sadly watch a reasonable, 
decreasing, temperature displayed on the controller. The thermocouple has 
a resistance, when unplugged, of 0.7 ohms. The heating element has a 
resistance, when unplugged, of 300 ohms. The manual seems to indicate 
that a new element will have a resistance of 5 ohms and an older one 9 
ohms.

1) Am I interpreting things correctly when I think the element is dead? If 
so, any chance I can order just the element? I see a smattering of old 
posts indicating folks have done this but no details are specified. Does 
Thermo sell just the heating element? If not, what alternative company have 
you had success with?

2) I see the part number for the entire oven assembly is EX1121200 and has 
a cost of $8212 with 35% back if exchanged. Does anyone know of any 
alternatives?

Thank you.

andy


Andrew Schauer
Earth and Space Sciences
University of Washington
Seattle, WA 98195

206.543.6327
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http://depts.washington.edu/isolab/

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