What Can Be Detect By A Conveyor Metal Detector

All metals are either ferrous, nonferrous or stainless steel. The  ease of detection will depend on their magnetic permeability and  electrical conductivity. Table 1 shows metal types and their ease  of detection. The size, shape and orientation (with respect to the  detector coils) of the metal particle also is important. Since size,  shape and orientation of metal contaminants is not possible to  control, it is best to operate a metal detector at the highest possible  sensitivity setting

Please noted  that metal detectors cannot find bones, plastic, glass and other dense non-metallic contaminants.