The working principle of handheld metal detectors is mainly based on electromagnetic induction and eddy current effects. When the detector is powered on, it will generate a periodically changing magnetic field, which will generate a vortex electric field in space. When the detector approaches a metal object, eddy currents are generated inside the metal object, which in turn affect the original magnetic field, causing a change in frequency and triggering the detector's alarm mechanism. This device is easy to use, has no adjustable controller, responds quickly to detecting metal objects, and emits sound and LED lights simultaneously. It is mainly used for security checks in airports, courts, sports venues, entertainment venues, and other places. It can search for various hidden knives and hidden metal objects that pose a threat to personal safety, and can also be used for checking hand luggage, mail, and packages.
What are the main characteristics of handheld metal detectors?
★ Automatic battery level detection
★ Sound and light alarm display
★ Automatically readjust and self detect,
★ Ultra high sensitivity, capable of detecting very small metals such as pins and staples
In case of interference, it can be eliminated by adjusting the button.
★ Automatic startup detection, no need for adjustment, large scanning area, can quickly and accurately complete detection,
★ Adjustable sensitivity