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What is the main function of metal detectors?


Release time:

2021-07-08

The treasure detector is a metal detection device, which is composed of a metal detector and an automatic rejection device, and the detector is the core component. The system can use the alarm signal to drive the automatic rejection device, etc., to exclude metal impurities on the production line.

treasure detectorIt is a metal detection device, consisting of a metal detector and an automatic rejection device, in which the detector is the core component. The system can use the alarm signal to drive the automatic rejection device, etc., to exclude metal impurities on the production line.

Three sets of coils are distributed inside the treasure detector, namely the central transmitting coil and two equivalent receiving coils. The oscillator connected to the middle transmitting coil generates a high-frequency variable magnetic field, and the induced voltage of the receiving coils on both sides is in an idle state. Before the magnetic field is disturbed, they cancel each other out and reach an equilibrium state.

treasure detectorThe main functions:

1, equipped with ground balance circuit, can affect the "mineralization reaction", greatly improve the detection depth and accuracy;

2, with the function of distinguishing between ferrous and non-ferrous metals;

3, the use of intelligent operating system;

4. The metal detector adopts high-strength ABC material package, which is light in weight and long in life;

5. The metal detector can recognize the metal sound through the earphone.

6, metal buried in the ground, through the thick soil layer is detected, inevitably affected by the geological structure. There are many minerals in the formation, and they also cause metal detection to produce signals. The signals of minerals can mask the signals of metals, creating artifacts. People who have used old treasure detectors have had this experience. When the probe is close to a mound, stone or brick, it will sound an alarm. This phenomenon is called "mineralization reaction". For this reason, the old-fashioned treasure detectors can only detect metals in shallow soil and are powerless against metal targets buried deep underground.

7. Detection range: about 1.5 meters.treasure detectorThe performance and reliability depend on the stability of the electromagnetic emission frequency, and the working frequency of 80~800kHz is generally used. The lower the working frequency, the better the detection performance of iron; the higher the working frequency, the better the detection performance of high carbon steel. The sensitivity of the detector decreases as the detection range increases, and the magnitude of the induced signal depends on the size and conductivity of the metal particles.

 

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