The Sartorius Observer metal detector is equipped with specially developed sensors that operate on the basis of magnetic field measuring.
The products to be tested, such as baby food in jars with aluminium lids, are first pre-magnetised by the device on the infeed side of the belt during monitoring. Then the detector's magnetic field sensor measures the remanent magnetism of any metal particles present.
The sensor detects AISI 304 particles even if shearing or deformation has altered their crystal structure.
The detector works even at high conveyor belt speeds.
It can monitor composite packages of chips or ready-to-eat meals, aluminium lids on yoghurt and blister packages of tablets. Because aluminium does not have any magnetic properties, it is practically 'transparent' for the machine.
The latest machine, the Sartorius Observer 300 now covers a wider detection range, enabling contaminants to be detected in bulk materials as well as packaged goods.
In addition, it can be integrated into the quality assurance system ProControl for Windows to ensure 100% traceable recording of metal contaminants to comply with regulations and directives.
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