1. Restrain the product effect. Foods with higher actual sensitivity and high salinity or moisture have high conductivity, which will produce interference signals in the process of passing through the metal detector. This phenomenon is called "product effect". Products with large product effect will have an adverse impact on the actual detection sensitivity. In addition, the product effect is not only affected by its composition, but also greatly different when the same product passes through the metal detector in different directions. Schematic diagram: the product direction difference metal detector can not only effectively detect metal foreign matters in non-conductive products, but also significantly improve the sensitivity when detecting foods with high product effect such as marinated duck neck and cheese.
2. Two way detection can improve the detection effect. The detection effect of the metal detector is also related to the magnetic field frequency of the metal detector. The low-frequency magnetic field and high-frequency magnetic field are respectively suitable for the detection of different products, as well as different metal foreign bodies such as iron, copper, stainless steel, etc. On the basis of effectively restraining the product effect, the metal detector can be equipped with dual detection, high and low frequency switching and other functions. For different products, it can replace different frequency detection to improve the detection effect.
3. More stable and longer service life. The high stability of the metal detector means that the metal detector has strong anti-interference ability, lower false alarm rate and stable and reliable indicators.
In order to adapt to multiple application scenarios, the equipment balance voltage of the metal detector is more stable, which not only has stronger anti-interference ability, but also effectively extends the service life of the equipment and reduces the operation cost. The metal detector can stably and reliably detect metal foreign matters in diversified products, provide better and more worry-free metal foreign matter detection schemes for food manufacturing enterprises, and escort food quality and safety.
Based on many years of industry practice experience, the test further optimizes the key configurations of the metal detector, such as the transmission demodulation circuit and coil system, effectively suppresses the product effect, reduces the product effect difference related to the change of product direction, improves the actual sensitivity when testing products, and reduces the difficulty of equipment commissioning and use.
