Tcs do generate a miliamp current that a meter would pick up and convert into a temp measurement. Do a search on Immersion Thermocouples, a lot of different kinds out there… 🙂
http://www.omega.com/ppt/pptsc.asp?ref=HSTC http://www.te-direct.com/products/immersion-temperature-sensors/thermocouples/
Just some TC info…
http://www.omega.com/temperature/Z/pdf/z204-206.pdf
http://www.omega.com/thermocouples.html
http://www.omega.com/techref/colorcodes.html
http://www.omega.com/temperature/Z/pdf/z052.pdf
😀