I am not sure, but I think thermistors don't survive >300º C.
There was a topic about this some time ago, and I remember they were talking about using thermocouples. Maybe someone has some more info on this, because it sure seems important cfeniak
Edit:
Ohh, I should've looked before writing, they have a new *industry first* thermistor capable of 500º!!!
[
www.b3innovations.com]
Edited 1 time(s). Last edit at 06/21/2014 06:59PM by Ohmarinus.
http://www.marinusdebeer.nl/