Donovan Parks wrote... >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? RTD =3D Resistance Temperature Detector. Most RTDs are platinum wirewound or thin-film resistors with a +0.385%/C temperature characteristic. Common values are 100 ohms and 1000 ohms at zero C. Dave -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.