Metal buried underground and detected through thick soil layers is inevitably influenced by geological structures. The strata contain various minerals, which can also generate signals for metal detection. The signals of these minerals can mask the signals of metals and create illusions. People who have used old metal detectors have this experience. As the probe approaches a pile of soil, stones, or bricks, it will emit an alarm sound. This phenomenon is called 'mineralization reaction'. For this reason, old metal detectors can only detect metals in shallow soil and are powerless against metal targets buried deep underground. The underground metal detector is equipped with an advanced ground balance system, which can eliminate the interference of 'mineralization reactions' and greatly improve the detection depth and effectiveness of the instrument.

Most underground metal detectors in China can detect up to 2 meters, but the effectiveness of the detection depends on the specific situation of the area you want to detect. As for the current detectors, they are mainly domestically produced and imported. However, compared to domestic ones, imported ones generally have better performance. Most domestic detectors are exaggerated and modeled after imported ones.

Underground metal detectors use sound alarms and instrument displays, and the detection depth is closely related to the area, shape, and weight of the metal being detected. Generally speaking, the larger the area and the more quantity, the greater the corresponding detection depth; On the contrary, the smaller the area and quantity, the smaller the corresponding depth.

The direction of movement of the price gauge pointer of the visual underground metal detector is distinguished between the positions of metal and non-ferrous metals (gold and silver) in the underground. You can clearly see that its control panel displays the positions of black metals and non-ferrous metals (gold and silver). Level meter and pointer: Swing display detects whether metal is detected and the type of metal. Sound indication: A fixed frequency sound indication will be emitted for the detected metal. Waterproof detection panel: Even in the rain, the detection panel can be used for detection. Adjustable detection rod: You can adjust the detection rod to the appropriate length.