by Chip-Circuit » Fri Mar 10, 2006 12:05 am
I have an array of 24 sensors. each is run on 18ga, twisted shielded, with the longest line being 24 feet.
This is for a 24 point data logger.
We used the LM34 after much discussion. We calibrate them by putting them inside of a box and letting them all stabilize, then add any correction factors.
then heat the box with a lightbulb and let is stabilize again.
Seems to work well enough.
We do use 12 bit ADC's as the BS2 is the microcontroller used.
Dave