How Do Metal Detectors Work?

A metal detector is an electronic instrument that is used to detect hidden objects, particularly metals. It is considered one of the most amazing and useful devices today as it can accurately detect the presence of most types of metals. There are different types and models of metal detectors, but the most common ones are the handheld and walk through models. These are commonly found in schools, office buildings, prisons, and airports.

Metal detectors have a wide range of uses – from leisure to safety. With the help of a metal detector, security personnel can instantly detect if a person is carrying undesirable objects, such as knives and weapons. Even if the object is kept securely inside your bag, metal detectors can discover them. And with the help of a metal detector, adventurers can have an opportunity to find valuable treasures buried underground, such as coins and jewelries.

metal detector

How metal detectors work is quite simple – they use the principle of electromagnetism. Of course, different models work in different ways, but here’s the science behind how one of its simpler kinds work. A metal detector contains a coil of wire inside its loop, known as transmitter coil. When electricity flows through the coil, it produces a magnetic field whose polarity points into the ground. Each time the current’s flow changes, the field’s polarity changes, too. This changing magnetic field affects the atoms inside any metallic object, creating another magnetic field.

This second magnetic field is what the metal detector picks up. The detector has a second coil of wire inside its loop, called as receiver coil. When the magnetic field produced by the metal flows through the receiver coil, it amplifies the frequency and sends it to the control box (the part of the detector that contains controls, speakers, and battery), alerting the person holding it that he has found something. The closer you move your detector to the piece of metal, the stronger the magnetic field is picked up by the receiver coil.

Operating a metal detector is not that complicated compared to other modern devices. In fact, it is not necessary to understand the scientific principles on how to use this instrument (although it is better if you know it). Once you turn the unit on, you simply sweep it over the area you wish to search; and when you pass it over a target object, the signal lights up or creates a sound, informing you that you have found something. Even modern metal detectors work on the same principle; there are just more advanced features added to make them more functional and make the user’s experience even better. Today, newer models contain displays that show the type of metal detected, as well as how deep in the ground the metal is located.

In case you need a metal detector, and still unsure how this device works or don’t know how to use it effectively, you may want to check out this site In this site, you’ll discover the best metal detector in the market as experts share their metal detecting tips.

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