Detecting metal is a hobby loved by many all over the globe. What was once considered to be a great pastime has now become exceedingly popular as an extracurricular. There have been times when people set out to find something unique and came across a one of a kind item like the famous Golden Chalice from the great sunken Spanish ship Santa Margarita. Metal detecting finds greatly depend on the type of equipment you use for them. There are 3 main types of metal detectors that you can get. In this article, we will talk about each one of them in detail.
So, without further ado, let’s begin!
3 Major Types of Metal Detectors to Help With Metal Detecting Finds:
Visiting a metal detector store can not only guide you through each of the types we are about to showcase, but can also provide you a first hand experience with them. Knowing how to operate each of them is crucial and that is exactly the kind of thing you can learn there. Here are three types of metal detectors:
Very Low Frequency (VLF):
VLF metal detectors are used to locate underground metals. They work on frequencies that range from 20 kHz to 50 kHz. The main components of these machines are 2 coils, one of which transmits a magnetic field to communicate with the buried objects while the other detects any disturbances in the ground created by conductive material.
VLF units can be differentiated based upon what frequency they operate on: high (25-80kHz), mid (50-60kHz) or low (<30 kHz). When using VLF for detecting objects, as long as your detector has been set up properly, you should be able to get accurate readings. However, if you have never done this before, it is always best to start by sweeping the coil in a clockwise motion around your body. It helps with calibration and maintains a parallel relationship between the coil and ground surface.
Pulse Induction (PI) Detectors:
PI detectors are used to locate ferrous (iron-based) metals. They work by generating a pulse of current that creates a magnetic field around the coil. This magnetism is then interrupted when it encounters a piece of metal, which in turn causes the detector to produce an audio signal. The strength of this signal depends on how close the object is to the coil and also its size.
Ferrous metals like iron can be found anywhere from just below the surface all the way down to several feet below ground level. That’s why PI detectors are often used by treasure hunters who are looking for coins, jewelry, and other relics buried deep underground.
Multi-Frequency Detectors:
Multi-frequency detectors can do the job of both VLF and PI detectors. They work by transmitting a signal at multiple frequencies (usually around 15) which allows it to detect objects made from different types of metal. This is why they are often used for archaeological digs where there might be a variety of objects buried underground that need to be identified.
The ability to change and set the frequency yourself allows you to use your detector in a variety of areas like cities, beaches and around lakes. The best way to determine what type of detector you should buy is by thinking about what you plan on detecting. A reliable metal detector retailer like Teknetics Direct can make the buying experience much easier and satisfying for you. Different detectors are better at finding different types of metal. If you’re just starting out, it is always best to go with a VLF detector because they are easy to use and can find most metals.
Those are the 3 main types of metal detectors you can get your hands on. Every person has a different use case and now you have all the information you need to start your journey of detecting metals. So, get out there and bring home some of the best metal detecting finds!
For further information, visit the FAQs section below.
Frequently Asked Questions:
What is the difference between a VLF and PI detector?
A VLF detector works by generating a magnetic field around the coil to detect metals, while a PI detector creates a pulse of current to find ferrous metals.
What type of metal detectors are best for beginners?
For beginners, it is always best to go with a VLF detector because they are easy to use and can find most types of metals. They are also less expensive as compared to PI or multi-frequency detectors.
What is ground balancing?
Ground balancing helps your metal detector find the most accurate readings by eliminating any unwanted signals from nearby metallic objects or the ground itself. It is usually done by walking at a steady pace in one direction and then the other while keeping your detector coil parallel to the ground.
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