The use and structure principle of metal detector
use
It is mainly used for detection of metal foreign objects in small food, chemical products, clothing, shoemaking, marine aquatic products, fishery, dried and fresh aquatic products, pasta, frozen food, dried and fresh fruits and vegetables, sugar, tea, pharmaceuticals, etc., and to detect inclusions in raw materials or products. Or leaked iron, lead and other metal impurities.
Structural principle
Usually the metal detector is composed of two parts, namely the metal detector and the automatic rejection device, among which the detector is the core part. There are three sets of coils distributed inside the detector, that is, the central transmitting coil and two equivalent receiving coils. The oscillator connected to the middle transmitting coil generates a high-frequency variable magnetic field. In the idle state, the induced voltage of the receiving coils on both sides Before the magnetic field is disturbed, they cancel each other out and reach a balanced state. Once metal impurities enter the magnetic field area and the magnetic field is disturbed, this balance will be broken, and the induced voltages of the two receiving coils cannot be offset, and the induced voltages that have not been offset will be amplified and processed by the control system, and an alarm signal will be generated (metal impurities detected ). The system can use the alarm signal to drive the automatic rejecting device, etc., so as to exclude metal impurities from the production line.
Overview of Handheld Soil Heavy Metal Detector
The heavy metal detector can detect the heavy metal content in the soil, effectively prevent and control heavy metal pollution in the soil, and maintain our food safety to a certain extent. With the development, the soil heavy metal detector has been continuously upgraded. The handheld soil heavy metal detector better reflects the convenient application. What are the advantages of the handheld soil heavy metal detector? The hand-held soil heavy metal detector has been upgraded with higher detection accuracy, better detection limit and radiation safety guarantee, ultra-low temperature working state of -35°C, intelligent detection of irregular or very small samples, and the instrument comes with high-definition resolution display The screen and instrument application fully embody the characteristics of intelligence and humanization.
The use of the handheld soil heavy metal detector allows us to better apply the heavy metal detector. The irregular small sample detector that was inconvenient to detect before the soil heavy metal detector can be detected by the handheld soil heavy metal detector. The instrument is small, convenient and easy to carry. It is helpful for outdoor operation detection of soil.
