Hot and cold metal detector is mainly used in the metallurgical industry production line site, through the position of the workpiece movement in place check. Output a control switch signal (contact or level signal), so as to play the role of automatic control switch. Hot and cold metal detector according to the light source is divided into three types: 1, visible red and infrared laser hot and cold metal detector; 2, visible red light hot and cold metal detector; 3, infrared light hot and cold metal detector.
