The principle of the metal detector is as follows: Usually the metal detector is composed of two parts, namely the detection coil and the automatic rejection installation, in which the detection coil is the central part. When the coil is energized, a magnetic field will be generated, and metal entering the magnetic field will cause the magnetic field to change, which can be used to determine the presence of metal impurities. Some products contain water, salt and other components, which can also interfere with similar metals in the magnetic field. This phenomenon is called product effect. This type of problem can be dealt with through the product effect compensation function. After detecting the metal, the sensor activates the signal and drives the automatic removal installation, such as the flap, push rod, etc., to remove impurities.
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