>If I understand your question, you wish to use a thermocouple to measure
>a temperature from 0 ~ 70'C, using a preamplifier designed for 0 ~ 900'C.
>I would dissuade you from attempting this.

No, I am wanting to use the entire 0-900oC range to measure temp on a jet
engine.
I need to be able to use this info as part of a loop-back control system -
this is why i need to get this into a pic with usable figures.

Aaron