The underground metal detector is manufactured using advanced technology. It features wide detection, accurate positioning, high resolution, and easy operation. The metal detector is mainly used to detect and identify buried underground metal objects. In addition to its military applications, it is also widely used in security inspections, archeology, prospecting, and the search for scrap metal. Also known as "explorer" is a good helper for recycling. Overview The underground metal detector is manufactured using advanced technology. It features wide detection, accurate positioning, high resolution, and easy operation. The metal detector is mainly used to detect and identify buried underground metal objects. In addition to its military applications, it is also widely used in security inspections, archeology, prospecting, and searching for scrap metal. Also known as "explorer" is a good helper for recycling. Underground metal detectors use sound alarms and meter displays. The depth of detection is closely related to the area, shape, and weight of the metal being probed. Generally, the larger the area, the greater the number, and the corresponding depth of detection. On the contrary, the smaller the area and the smaller the number, the smaller the corresponding depth. The maximum depth of detection listed in the table below is based on the product's corporate standard. A 20 cm*20 cm*0.5 cm aluminum plate was embedded in dry soil and measured. Metals buried in the ground and detected through thick soil layers are bound to be affected by the geological structure. The ground contains a variety of minerals. They also make metal detection signals. The signals of these minerals will mask the metal signals and cause artifacts. People who used old metal detectors have this kind of experience. As the probe approaches the mound, stones and bricks, it will sound an alarm. This phenomenon is called "mineralization reaction." For this reason, old metal detectors can only detect metals in shallow soils, and they are powerless for deep underground metal targets. The underground metal detector is equipped with an advanced ground balance system that can eliminate the interference of "mineralization reaction" and greatly increase the depth and effectiveness of the instrument. History of development The emergence of an underground metal detector product has led to the development of an industry, and security inspection, an unfamiliar and familiar industry, has begun to enter the market. More than 40 years have passed, metal detectors have undergone several generations of detection technology changes. From the initial signal simulation technology to continuous wave technology until today's digital pulse technology, the simple principle of magnetic field cutting of metal detectors has been introduced into a variety of science and technology. Achievements. Whether it is sensitivity, resolution, detection accuracy or work performance has a qualitative leap. The application area has also extended to many industries with the improvement of product quality. The world's first underground metal detector was born in 1960, and the first underground metal detectors in the industrial era were also used mainly in industrial and mining industries. They are effective tools for checking the purity of minerals and improving their efficiency. With the development of society, criminal cases have risen. In 1970, underground metal detectors were introduced into a new field of application - security inspections, which are the prototypes of metal detectors we use today. Its appearance means that human awareness of security has entered a new era. In the 1970s, with the rapid development of the aviation industry, the occurrence of hijackings and dangerous incidents gradually increased the importance of aviation and airport security. Therefore, metal detector gates played an important role in the investigation of prohibited items in numerous airport airport facilities. Also in the 1970s, due to the emergence of metal detection gates in airport security inspections, metal detection gates were indispensable for security inspections in large-scale games (such as the Olympics) exhibitions and the security of important government departments. Since the 1980s, prison violence has been on a linear upward trend. How to effectively prevent and prevent violence as early as possible has become a top priority in prison management. While relying on police officers to strengthen management of prisoners, metal detection doors have become The security inspection facilities of the United States, Britain, Belgium, and other developed countries’ prison administration agencies formed an average metal detector door for security inspections for every 300 inmates; at the same time, the “treasure hunt†that has arisen in the West also made handhelds Portable underground metal detectors have come a long way. In the 1990s, the rapid heating of the electronics manufacturing industry became the darling of this era. In order to reduce product loss and end the embarrassing situation between employees and the company, large electronics companies successively adopted metal detection doors and hand-held metal detectors as management staff. Behavior, reducing the loss of product edge. So the metal detector has its new role - product security. After the 9.11 incident, counter-terrorism became an important issue for the international community. The bombings and terror campaigns have made terrorists the targets that countries’ security agencies have vowed to crack down on. At this time, the international community's awareness of "security precautions" has also been mentioned to a new height. Affected by the 9.11 incident, the deployment of security work strengthened by all walks of life was affected by this, and the application fields of metal detectors also successfully penetrated into other industries. With the vigorous development of the domestic security industry, in the field of security inspection, the development, production and promotion of underground metal detector products have made great progress in recent years. Since 2005, important examinations at all levels of provinces and cities, such as the National Postgraduate Entrance Examination, etc., have prevented the use of mobile phones and other tools for cheating. For the first time, these examination rooms have introduced a new type of instrument—a metal detector. This kind of instrument can discover the mobile phones, pagers and other items that candidates can carry with them. The candidates must first pass the “detection pass†before entering the examination room. Beach Racket,Racquet Beach Tennis,Wooden Beach Tennis Rackets,Professional Beach Tennis Rackets Ningbo Sno Stationery & Sports Articles Co., Ltd. , https://www.snotoy.com