How to choose a metal detector depending on the tasks?

On the topic of how to choose a metal detector, many articles have been written. But most of them are of an advertising nature, orienting the reader to buy a certain model. We will not touch specific brands, but we will just help you choose the metal detector, depending on the tasks you set.

Search under water

Here we mean not just the descent of the search coil into the water, but the immersion together with the instrument on the river or sea bottom. These metal detectors are completely protected from moisture: both headphones and body. In such models, headphones are an integral part of the device, since underwater metal detectors are not equipped with a display and provide only sound information. Due to the settings of the device you can search in different environments (bottom, salt and fresh water, coastal zone), taking into account not only the mineralization of water, but also various disturbances.

Deep sea searches

Before choosing a metal detector for deep-sea searches, you should evaluate your budget, because the cheapest models start at $ 1000. These devices are designed to search for large metal objects at a depth of 6 meters. And the larger the object, the more at depth it will find a metal detector. It should be noted that even though these devices have the same high sensitivity as other metal detectors (arched, ground, etc.), but they simply can not find one coin. Now if it's a treasure (a coinage), a pipeline or a hatch, then please. These devices have one more peculiar feature: they almost completely lack discrimination. That is, in order to identify the detected object, it must be extracted. And finally, a tip for those who want to save on buying a deep-sea metal detector. Some companies for conventional underwater metal detectors produce special deep-sea nozzles, increasing the depth by 1.5 meters and expanding the range of tasks and search technologies. Still, this method does not make a full-depth metal detector out of the device, but only extends its functionality. But you can consider this option with a limited budget.

Search for gold

Do not think about how to choose a metal detector for gold, because for this purpose there are special models that have very high sensitivity. Such devices are able to find even the smallest pieces of gold. The principle of operation of a metal detector of this type is very simple. Since gold has a specific electrical conductivity, the manufacturers initially set the frequency in the device to the maximum corresponding to this metal ability. Of course, such sensitivity gives excellent results when searching for other objects.

Close search

If there is a question: "How to choose a metal detector for very small distances?" - then you need a pinpointer (pin pointer). If you literally translate this word from English, you get a "point indicator". This device is designed to accurately determine (up to a millimeter) the location of the object at a depth of 5 cm. This model has no discrimination, and it can be used to search for small items (ornaments, buttons, coins, etc.) in the edges, dumps and In all those cases where it is impossible to find an object detected by a conventional device.