In a message dated 1/9/2002 3:04:47 PM Eastern Standard Time, Donovan.Parks@NRC.CA writes: << ello, I am using a Global Water WE700 termperature sensor and it is of TYPE precision RTD -> what does this mean? what does RTD stand for? Thanks, Donovan >> Resistance Temperature Detector. As I recall, they arre more accurate than thermocouples. Max -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.