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The role and characteristics of magnetic metal detectors in food and pharmaceutical plants
Apr 19, 2018

The role and characteristics of magnetic metal detectors in food and pharmaceutical plants


With the continuous improvement of the material and cultural living standards, the safety of food and medicine has attracted people's attention. The safety of such products is mainly reflected in many factors that affect the quality of products and endanger people's health during the production process of foods and drugs, such as drug residues, microorganisms, toxins, metals, heavy metals, preservatives, and solid insoluble. Therefore, strict control over the entire process from the collection of raw materials to the flow of products into the market is needed so as not to cause irreparable losses. In the production process, the harm caused by metal impurities is serious and it is also an important factor that affects the quality of the product. The wide application of magnetic metal detectors not only helps food and pharmaceutical companies solve this problem effectively, but also becomes an indispensable and important step in process control.


Metal detector main features:

Sensitivity debugging quantification;

High sensitivity design can detect large metals; sound and light alarm.

Detection range: iron, aluminum, stainless steel, alloys and other metals.

Control output: Relay contacts are normally open and normally closed.

Timing function: delayed release after relay pull-in, delay time 1-10 seconds.


GJT-B metal detector uses a differential transformer type sensor that can be assembled. In the circuit design, a new metal detection technology - digital phase-shifting and related detection technology is used. It has stable and reliable performance, high detection sensitivity, and strong material suppression characteristics. The excellent anti-jamming capability detects various metal substances mixed in the raw materials. It is the sensing signal generated when the metal enters the electromagnetic field of the sensor. After the signal amplification processing circuit is used to drive the actuator, the harmful metal can be detected.