Metal Detectors Overview
Metal detectors are devices used to identify metal objects, helpful for locating buried items or detecting metal inclusions. They typically consist of a portable probe that emits signals; when metal is detected, the device signals the user through indicators like sounds or needle movements. There are also "walk-through" detectors used in security settings, such as airports and courthouses.
Detection Capabilities
Metal detectors can identify metals like iron, nickel, and cobalt, while active models can also detect copper and aluminum. However, they cannot locate non-metal objects like diamonds or pearls. Detection effectiveness varies, with most models reaching depths of four to eight inches, while specialized detectors can reach up to 20 meters.
Interference Factors
Certain materials, especially iron and conductive minerals, can obstruct signals, making detection challenging.
Buying Considerations
When purchasing a metal detector, important features to consider include detection mode, sensitivity, coil size, and target identification. The value of metal detecting as a hobby varies based on individual motivations, whether for treasure hunting or socializing.