Effect of soil moisture on metal detecting

Effect of soil moisture on metal detecting In the category treasure hunting more articles and learn more information about Effect of soil moisture on metal detecting Reviews Price Specifications Features Image manuals videos Accessories All this in metal detectors for gold.

Building on experience, each searcher is faced with all new subtleties that do not lie on the surface. This subtlety is moist soil, which plays both positive and negative role. Testing shows that in different conditions or moisture can help find the desired object or significantly hinder the search operation.

Initial testing of the metal detector is held in the air, because of what became known as the air tests. They show the real characteristics of metal detectors without the influence of any underground factors. In fact, characteristics of the devices vary in one direction or another. In the first place, the maximum search depth influences “halo” object. Under the halo should be understood peculiar spot of oxidation products form around a long time lying in the ground of the subject. In this case, humidity plays into the hands of the search engines. It actively dissolves metals around them so there is an increase of conductivity of the soil. Metal perceive “halo” as large objects, despite the fact that the actual geometrical dimensions of the object is much less. Oxides have a reddish-brown color and are well distinguished in the soil. This suggests that the objects captured under the ground recently, quite difficult to find. You can verify this yourself, burying a few coins on your own site. Watering the soil brine will cause the rapid formation of an electrical contact area, but will not lead to the formation of the halo.

The size of the halo is directly depends on the type of metal. So, from the iron formed sufficiently large halos, ranging in size depending on the length of the object in the ground. Second place by the halo takes copper. It reacts with water and mineral compounds to form various oxides. Much smaller halos formed around the silver coins as silver reluctant to come into contact with oxidants. Gold does not dissolve even in acid, so does not form an absolutely no halo.

Knowing the oxidizing properties of metals, it is possible to use them for their own purposes. It should be remembered that the moisture is best facilitates the identification of ferrous metals (iron). Hope to increase the visibility of gold and silver coins are not worth it. To discriminator detector reliably identifiable silver coins in the cluster iron trash, you need to wait for the soil dries. In contrast, if the task is to detect old relics of iron, you should wait for rain. Rainwater affects iron, increasing the electrical conductivity, thereby making it possible to deepen significantly searches.

The most disgusting conditions for results – wet mineralized soil. Even the most expensive and advanced models of metal detectors start to give false signals about finding metal in the ground. In this case, the real metal and he can not respond. To carry out search operations in saline soils need to wait for them to maximize drying. A similar situation is observed on the beaches, where it is desirable to use metal detectors to the regime of compensation salt content. Each search engine has to conduct preliminary research in this area, to get acquainted with the types of soil, to play with the modes of the detector. Conduct searches in wet soil can only be achieved if it is known beforehand that the finds are rare and scattered over a large area. The ideal place is the beach, located on the shores of freshwater lakes.
Remember that these rules only apply to amateur instruments with discriminator. Metal working on pulse induction technology, looking for metal everywhere, not recognizing them by type.