How Airport Metal Detectors Work

BrandonAllred By BrandonAllred, 28th Jun 2013 | Follow this author | RSS Feed | Short URL http://nut.bz/n5yp5us2/
Posted in Wikinut>Travel>Tips>Flights & Flying

Most people ask: how can metal detectors help in preventing tragedies such as the September 11, 2001 attacks? How do metal detectors work and how do they detect items that can be used for committing criminal activities? In order to answer these questions, we need to first find out how metal detectors work.

Metal Detectors increase safety and security

Metal detectors are one of the tools employed by several airports all around the world in order to further increase their security as well as ensure the safety of their passengers and staff. These metal detectors are very useful, as they can detect even the most concealed item from a target’s body, leading to criminals and terrorists to think twice about doing their nefarious deeds. And with advanced metal detectors coming in the market such as the Garrett PD6500i walk-through metal detector, security and safety of the passengers have improved tenfold.

However, most people ask, how can metal detectors help in preventing tragedies such as the September 11, 2001 attacks? How do metal detectors work and how do they detect items that can be used for committing criminal activities? In order to answer these questions, we need to first find out how metal detectors work.

Metal Detectors – How Do They Work?

Almost all metal detectors, including the Garrett PD6500i metal detector, are based on pulse induction (PI). The one side of the arch produces several electrical pulses, whereas the other side of the arch receives the pulses. This process only lasts for several microseconds.
Should the pulse encounter any interference on its way to the other side, the magnetic field it generates collapses suddenly and generates an electric spike, resulting to the alarm sounding off. Interference is produced whenever it passes through a metallic object from the target’s body. This is how metal detectors detect metallic objects from a target’s body.
Old metal detectors usually have only one-way detection, which is quite effective still. However, in order to better the security inside the airports, most airports use advanced detectors as they employ “multi-zone” technology, which means that it produces multiple pulses. This means that these metal detectors do not only check from left to right (or vice versa), but simultaneously produces pulses from left to right, right to left, head to foot, and even foot to head. This technology ensures that no metallic object will be left undetected.

Passing the Metal Detector Test

All you need to do in order to pass the metal detector test is to remove all the metallic objects in your possession. Here are some of the most common metallic items you have in your body that you need to be removed:
• Mobile devices – most mobile devices are made from metallic objects, thus leading to the metal detector detecting this.

• Watches – same as mobile devices, these are made from metallic materials and should be removed before passing through the metal detector.

• Belt – The belt is usually made of metal. While some advanced metal detectors do not detect this anymore as they perceive it as not threatening, it is advised that you hand it over to the security personnel in order for you to finish the test faster.

• Other metallic items – Items such as keys, USB devices, and others can also sound the alarm of metal detectors. It’s best that if you keep these things in your luggage and have it verified by the X-ray machine instead.

If you don’t want to trouble yourself, make sure that you remove all the metallic items in your possession or just keep it in your luggage. Passing the metal detector test is required because this can halt criminals and terrorists from committing criminal activities.

Tags

Airport Travel, Metal Detectors, Security

Meet the author

author avatar BrandonAllred
I love sports, family and life all together. My mainly focus on articles and content related to security.

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Comments

author avatar cnwriter..carolina
4th Jul 2013 (#)

good advice for travelers...thank you...

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author avatar Rose*
18th Dec 2013 (#)

It's sad we have to do all this just to stay safe. Oh well

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