what is the name of good accurate cheap temp sensors that measure voltage drop
for the gas stove heat range.. maybe 100-300 degrees... and a good source for them mail order....its for measuring pipe temp on the vent pipe...

 

That's a harsh environment. You are probably going to be stuck with using a thermocouple. You can get on the Omega Engineering website and see how to do it.

If you just want to check the stovepipe temp now and then, the Fluke 62 here - http://www.transcat.com/Catalog/Pro...TRAPCD=WBGTE&gclid=CJbZw9iEqpcCFQrFGgodGiIeiw - will do very well. There is some cost to it, but it's already built.

 

Hello,

There are also PT100 sensors that can have the temperature range you need.
Here is an overview of RTD sensors :
http://www.educypedia.be/electronics/sensorstemprtd.htm

Greetings,
Bertus