For the simplest implementation, I agree.  Since you only need to go up to 240
F (About 115 C) and most standard thermistors go up to 150 C (302 F) you should
be ok.  The problem will be on mounting it so the vibration doesn't shake it to
death.  A good thermal conducting silicon based product should help vibration
while still allowing the heat to get to the sensor.

FIFTY CENTS?!?!?!  Where do you buy at? In quantities of 1, I can only find
them for about $2.00 each.

An alternative (and more costly / complicated / accurate?) way would be to use
thermocouples

Bob Blick wrote:

> Thermistors. Standard 10kohm@25C ones go for about $0.50 and can be read
> any number of ways, depending on how accurate you want to get. Simplest
> implementation would just use a capacitor(say 1uF) and a small resistor(say
> 220 ohms) off of any pic pin. Use the thermistor as a pullup to charge the
> cap. The pic pin hooks to the cap through the resistor. Drive the pic pin
> low for a while, then TRIS it to an input and time how long it takes to
> become "1".
>
> This method ignores most electrical demons, and can be done in the
> background in a timer-based interrupt. And it's cheap.
>
> -bob
>
> At 09:10 AM 4/24/98 -0700, you wrote:
> >Thank you for reading
> >I need a recomendation for temp sensors. I want to attach sensors to
> >automobile parts (carb, intake manifold, trans., differential...). Temps
> >will not exceed 240 F. Also, how to avoid induction in wiring from high
> >energy ignition.
> >Thank you
> >John
> >
>
> http://www.bobblick.com/