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All About Security Metal Detectors
Author: Sophie H. Hanson

Security metal detectors are devices that allow people to screen any metallic object in security zones. Most of these detectors work with very low frequency technology, but the most advanced ones use low radiation x-rays to accomplish their purpose. Security metal detectors are most used in places like airport security checkpoints, government buildings security, and courthouse security. Other places where they are used are public schools and special events like football games.

There are two types of security metal detectors: hand held metal detectors and walk through metal detectors. The first ones are used by security and law enforcement officers, these devices allow them to detect pistols and knives, and it is possible to use a reduction switch to lower sensitivity interference.

A special variation of them are tactical handheld metal detectors which are more advanced and don''t require to be adjusted, they are able to detect stainless steel ferrous and non-ferrous weapons. Portable hand metal security detectors can detect weapons or any kind of metal piece a person may be carrying, and they can check objects for magnetic or non magnetic fields, they are very reliable and their batteries last for a long time.

Walk through security metal detectors can use two kinds of technology. Those with digital technology allow to have a better target detection coverage, and are very useful in airport security. Those which are based on a micro processor can avoid any electrical interference with x-ray devices.

Walkthrough metal detectors can also be divided in multizone and single zone walk through security metal detectors. The first ones are used in high security levels and include a sensitive device that allows them to detect regular weapons like pistols and knives. They can be assembled and transported without any difficulty.

The second ones are used in cruise chips and public places, and metal detectors in public schools are also very common, and they have medium sensitivity and other features like water proof electronics so they can be protected against humidity.

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