The Working Principle of Gament Metal Detector - News


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The Working Principle of Gament Metal Detector

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The needle detector is a ferromagnetic metal detector, which is used in the textile industry. 

According to the shape difference,it can be broadly divided into three categories. Conveyor tape, platform tape and handheld tape. 

conveyor needle detectorhandheld needle detectorplatform needle detector

When a foreign body with iron properties, such as iron filings, enters the needle region, the magnetic field environment will change. And then cause the fluctuation of the instantaneous current of the magnetic field.The sensed abnormal current is transmitted to the control circuit board,and compare with the sensitivity.When the current value of this change reaches or exceeds the value of the detector sensitivity,The control circuit board will make alarm for the machine to stop, rewind belt and a series of instructions.And finally complete this series of actions.

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