Just a follow-up

The PT100 is in service and working well. The person organising
this job/trial asked for more temperature sensors for some general
comparitive measurements around the test area. Not wanting to
spend spend spend on PT100s, I made this inexpensive circuit up
to use LM335s

http://home.clear.net.nz/pages/joecolquitt/0-10mA_remote_lm335.gif

Range of interest for us is 5-30C. Voltage at PIC pin is within 0.5C
of expected, and within spec for the LM335

Any suggestions for improvement/cheapening or how you did it welcome

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist