| Wire-wound or thin-film RTD element Wire-wound RTDs, embedded in stator slots, are the most common method for measuring winding temperature in large motors. The wire-wound element extends through most of the body length and measures the average temperature of the winding. Thin-film RTDs are identical, except for the size of the sensing element. Because the thin-film element is small, approximately 0.08" x 0.09" (2.0 mm x 2.3 mm), it senses the temperature in only one small spot of the winding. Thin-film elements are best suited for shorter length stator sensors. Man IN* ll Thickness |