Pogwiritsa ntchito mfundo yoyezera kutentha kwa mafunde amphamvu, chidziwitso cha kutentha mu zigawo za ma electromagnetic wave frequency signal. Sensor yotentha imayikidwa mwachindunji pamwamba pa zinthu zoyezera kutentha kwa chinthu, ili ndi udindo wolandira chizindikiro cha wailesi, ndikubwezera chizindikiro cha wailesi ndi chidziwitso cha kutentha kwa wosonkhanitsa, pamene chojambula cha kutentha chimagwira ntchito bwino, sichifuna mphamvu zakunja. kupereka monga batire, CT loop magetsi. Kutumiza kwamagetsi pakati pa sensor kutentha ndi chojambulira kutentha kumazindikirika ndi mafunde opanda zingwe amagetsi.