Scientists and engineers conducted an attempt to use the latest knowledge that emerged through the study of electricity to develop a special machine that could look for metal. The use of such devices would help in the extraction of ore and give a huge advantage to any miner who would use it. The first such machines were crude , consumed a lot of battery power, and worked only to a very small degree. Modern development in the history of metal began in 1920, when Gerhard Fischer studied radio direction finding system . She had to change the technology in favor of more precise navigation .
Metal detectors operating principles history how choose
Through the development of the induction balance system , the search technology has improved many times over. In this system, two coils are used , and they are electrically balanced. After contact with the metal in close proximity to them, the coil became unbalanced.
Modern professional models of metal detectors , or as they are called , or just metal detectors treasure hunters are computerized , they are used in the research field of integrated circuits , so it allows the researcher to establish such important components of the search sensitivity, discrimination , speed way , the threshold amount , etc. . , and save these options in the device for future use . Compared with metal detectors , which have been on the market for only ten years ago , modern detectors are lighter, use the opportunity to search for a deeper , better distinguish objects and consume less energy.
Portable metal detectors are used by archaeologists and hunters for valuable objects to find various metal objects such as coins , weapons , jewelry , ammunition and other “treasures” of the metal, buried deep under the ground.
Today you can find all kinds of metal detectors of any class or kind . Their cost ranges from 7,000 to 300,000 rubles. We can say that there is a rule: the less will be your metal detector , the less you will be able to see the ground. It is best to look to the model of metal detectors , which professionals call the “golden mean” . Models of this category will cost you about 20 thousand rubles. From the price also depends on the definition of the type found by metal detector metal. Therefore cheap device is unlikely to find something useful for you . However, the choice of prices depends primarily on your goals .
When you choose a major computerized metal detector , is to understand what features you need in it , and which will be entirely superfluous. So you do not have to change it for a different model , and you will be able to take advantage of all the available functionality in it .
When choosing a metal detector important to understand that to a large extent you are looking for , rather than a metal detector and is competent and reasonable approach to determine in advance and search for what made it all the way when buying the machine . In such cases it is best to approach wisely choosing a location search. Search engines work is, above all , a set of actions in which the choice of the metal detector is only half of the required work .
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