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Several factors affecting ND-600B double probe needle detector

Views:0     Author:Site Editor     Publish Time: 2019-08-20      Origin:Site

Several factors affecting ND-600B double probe needle detector


First, the transmission frequency of the conversion coil frequency conversion coil and the size of the metal sheet will directly affect the detection results. 

Second, the phase angle of the conversion coil causes the phase relationship of various metals. Each different metal can generate different detection signals. Therefore, the detection signal can be regarded as a vector, the phase angle represents the metal, and the vector length represents the size of the metal piece.


Third, the product effect If a product can conduct electricity, the product usually has a certain amount of water, it can be said that it has a product effect. From the technical point of view of metal detection, this conductive product is no different from metal. The sensitivity of the metal detector varies depending on the magnetic field distribution, and the sensitivity of the metal detector changes. The closer to the center line, the lower the sensitivity. The sensitivity at the centerline is the lowest, so the test sample should pass through the centerline during the test.

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