![]() The size of an object: The larger the metallic object, the easier and deeper it can be detected. This causes the soil to become more conductive, which in turn makes the metallic object appear larger than it actually is and easier to detect. As these chemicals eat away at the metal, oxidation (rust) takes place, which is absorbed into the surrounding soil. A modern zinc penny is attacked by these soil chemicals quite easily, whereas the action on copper and silver is much less, and corrosive action on gold is hardly noticeable, if at all. ![]() The length of time an object is buried: Various chemicals in the soil have a corrosive action on metal. In this case, you may need to decrease sensitivity and/or increase discrimination on models like the Fisher 1266-X, which has extraordinary sensitivity.Ģ. Soil mineralization may vary greatly, and you may have to re-ground balance your detector to adjust for soil mineralization unless, of course, your detector has automatic ground balancing. Conductive properties of the soil: Heavily mineralized soil will tend to reduce the penetration power of your detector. The following variables, in addition to your own detector’s capabilities, all have an effect on the answer.ġ. Unfortunately, it has no absolute answers. ![]() A: This is the question most frequently asked. ![]()
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