Cold metal detector is mainly used in metallurgical industry production line site, through the position of the workpiece movement in place detection, the output of a switching control signal (contact or level signal), to participate in automatic control. Cold metal detector according to the light source can be divided into: visible red light cold metal detector and infrared light cold metal detector two types. Cold metal detectors can be divided into: specular reflection type, convection type, diffuse reflection type according to the detection form.
