食品在原料和加工过程中，会混入一些异物，这些物质会对消费者的身体造成伤害甚至危及生命。检测食品异物的主要手段有x射线探测、金属探测、视觉检验、电子扫描等方法。金属探测是最为常见的方法之一。使用金属探测器最终是为了提高产品质量，维护企业形象及保护消费者利益。
Food in the raw materials and processing process, will be mixed with some foreign substances, these substances will cause harm to consumers'bodies and even endanger their lives. The main methods of detecting food foreign bodies include X-ray detection, metal detection, visual inspection, electronic scanning and so on. Metal detection is one of the most common methods. The ultimate purpose of using metal detectors is to improve product quality, maintain corporate image and protect consumer interests.
金属探测器作为控制金属异物的典型仪器，是食品包装以及物料传输线上的一种金属检测装置，它能够有效地识别出食品和物料中混入的金属危害物质，并通过适当方式将金属物质剔除掉。
As a typical instrument to control metal foreign bodies, metal detector is a kind of metal detection device in food packaging and material transmission line. It can effectively identify metal hazardous substances mixed in food and materials, and remove metal substances by appropriate means.