What Does Each Function In A Metal Detector Mean?

The purpose of this article is to define all those words that are used when using a metal detector and that you may not yet fully understand.

It is imperative that you know all these terms and master them before purchasing a metal detector, and even before going on a treasure hunt.

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Coinshooting in a metal detector

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Many search engines will use the discrimination of a metal detector and Destination Identification functions to filter the trash from valuable metals such as gold, to concentrate on collecting coins, which will then be cleaned, preserved, sold or used to buy a drink after a long day of searching for coins.


Detection depth in a metal detector

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You may think that the depth of detection would be the most important factor to consider when choosing a metal detector, but it is not. The truth is that it is always an estimate and there is no good evidence for manufacturers to run it.

A number of factors contribute to the depth range of the detector, from the size and shape of its coil to the composition of the terrain being scanned.

You can perform an air test with a metal detector by passing coins in front of it at various distances, something enthusiasts do all the time, but it's not a true reflection of real-world use.

A device can detect coins under 11 inches of soil in one region, and not find the same coin under only 7 inches of soil in another soil.


Frequency in a metal detector

The operating frequency of a metal detector reflects the number of times per second your coil or plate extracts something in a search field. It is measured in kilohertz (kHz), with 1kHz equal to 1,000 magnetic field transmissions per second.

It's not something you really need to worry about, apart from knowing that, in general, low-frequency detectors are better at discriminating between trash and treasure, while higher-frequency metal detectors are better at prospecting for gold.


Target ID in a metal detector

The best friend of beginners and amateur veterans, is the identification of the target, is a function that shows the best prediction of your detector for what is under the ground on your screen.

In some detectors, the ID is a simple number that reflects the conductivity of an object on a scale of 1 to 99.

With practice, you can learn that foil and gold appear in one range of numbers, zinc cents appear in another range, and so on. Other detectors offer target graph ID, which essentially translates these ranges into graph icons.

This saves you the hassle of having to learn the conductivity ranges of common finds like nails and coins.


Sensitivity in a metal detector

Sensitivity is a simple adjustment or knob on most detectors that allows you to raise or lower the degree to which it reacts to objects in its magnetic field.

At their highest sensitivity settings, most detectors will erratically splatter all mineralization in the soil, regardless of their earth balance setting.

For detectors with fixed soil balance, sensitivity is the only control you have over how the device reacts to mineralization.

For detectors with automatic or manual ground balance, on the other hand, sensitivity adjustments can give you that extra margin of control when you start picking up odd signals, which is why  If you go on a hike, you should bring your gold and silver detector.


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