>A THERMOPILE is a nice non-contact sensor, that can measure the temperature >away of it. >The MLX90247B (Digikey $13) in TO39 4 leads, generates 40uV/K and it >incorporates a 26 kohms PTC in the same die, so you can compensate ambient >temperature. Even that operating temperatures should be from -40 to >+1500C, this is the thermopile temperature, not the reading non contact >temperature, even that I could not find its reading temp range. Introduction http://www.melexis.com/site/pr/tech_90247_release.htm Intro data sheet / ordering info (pdf 11 pages) http://www.melexis.com/site/products/pdf/90247.pdf $US2 / 100k quantity RM -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu