里德传感器
Reed induction; Magnetic spring sensor,
magnetic induction sensor
The main material of magnetic induction sensor comes from reed tube. Reed tube is a special magnetically sensitive switch. It is usually composed of two or three reed contacts made of both magnetic and conductive materials, which are encapsulated in a glass tube filled with inert gas (such as nitrogen, helium, etc.) or vacuum, and the reed ends of the parallel package within the glass tube overlap, leaving a certain gap or contact with each other to form the normally open or normally closed contact of the switch.