What determines the frequency of a metal detector?
The frequency you choose will depend on the type of metal you are searching for. The best place to find ferrous metals and iron is at 10 kHz and higher. Gold can be found at 14 kHz and higher. At frequencies between 3 kHz and 7 kHz, silver, copper, and brass can be found.
What is the best frequency for metal detecting?
The best frequency for metal detecting is somewhere in the range of 5 kHz to 15 kHz. This range is where most general-purpose metal detectors are tuned too, and also the easiest to manage for beginners. Nevertheless, you can always get more specialized detectors once you have mastered the basics.
What causes metal detector interference?
The noise or voltage spike, can be caused by a variety of other equipment running on the same power source as the metal detector. The most common sources of these spikes are motors, heaters, sealers or any other high current load.
What is the science behind metal detectors?
How Do Metal Detectors Work? Metal detectors work by transmitting an electromagnetic field from the search coil into the ground. Any metal objects (targets) within the electromagnetic field will become energised and retransmit an electromagnetic field of their own.
Are multi frequency metal detectors better?
Multi-frequency metal detectors are very good for beach detecting and use in saltwater. They tend to be more stable when compared to most single frequency detectors.
What will throw off a metal detector?
Steel-toed boots are a common culprit and even the metal eyelets in shoelaces can set off your detector. Diggers and other metal objects. If you are swinging near digging tools, this can be a problem. Jewelry you are wearing (rings, watch) may cause a false signal.
Why does my metal detector keep going off?
The most common reasons your metal detector beeps too often are: Low batteries. Moisture in cable connections or control box. Bad coil.