Security Metal Detectors Benefits & Disadvantages in Nigeria
How do metal detectors save lives?
The typical walk through style metal detectors are in use all across the Nation, and play a big role in helping curb violence. Their use helps to deter people from bringing weapons, firearms, knives, and many other such items into courthouses, schools, airports and other places of business.
Can metal detectors be harmful?
In summary, because of its nonionizing properties, the magnetic field generated in a metal detector will not cause harm to persons, even with routine and/or repeated scanning.
What are the different types of metal detectors?
There are three main types of metal detectors: Very low frequency (VLF) detectors, pulse induction (PI) detectors, and specialty detectors.
security metal detectors are used to ensure the safety & security in the airport , the college , the office building or any other areas , There are different types and models of digital walk-through metal detectors , but the most commonly used detectors are the hand held models and walk through models.
Metal Detectors Benefits in Nigeria
The metal detector consists of the oscillator producing the alternating current which passes through a coil producing the alternating magnetic field , If the piece of electrically conductive metal is close to the coil , eddy currents will be induced in the metal and this produces the magnetic field of its own.
The metal detector uses the principles of the electromagnetic induction , the detection of the possible dangerous metallic object is notified with the alarm , It is more convenient and efficient in terms of functionality and application , So , the walk through and the handheld metal detector will give you the best security.
The hand-held detector is primarily used by security personnel to physically examine if the person is concealing a metallic object , The walk-through detector alerts the security personnel when the person passing through the arch is carrying metallic objects.
The hand held metal detectors are more affordable & they are still able to identify metallic objects that are considered to be dangerous , while walk though models are more convenient and more efficient .
With the help of the hand held detector , The security personnel can physically detect if the person is carrying the metallic object , while walk through metal detectors are much quicker and they alert the security personnel of dangerous objects such as the knives or the weapons .
The active detector is a device which generates the energy for illuminating the portal region of the detector , The generated energy for the walk-through metal detector is in the form of the magnetic field , The interaction of the generated magnetic field with some types of objects in the portal region of the detector and walk-through metal detectors have the ability to detect this interaction .
We can feel safety in the airport , the college , the office building or any other area where these detectors are being used , The people that are using them can control who enters a specific area and what he brings inside it .
Metal detectors can deter potential criminals because the criminal will think twice before walking through a security check point , They offer alarm indication , The signal warns of the detection metal object , The indication can be visual and/or auditory and the alarm indication is off until a metal object is detected .
The alarm indication is proportional to the size , proximity , orientation and material of an object , The device used to generate the alarm indication can be a light bulb , lamp , light emitting diode , etc , Generating device can be a horn , siren , buzzer or similar item for the auditory indication.
Metal Detectors disadvantages in Nigeria
The main drawback in using the metal detectors is the privacy concern , Many individual finds it uncomfortable to undergo thorough physical examination of their bodies for potential metallic objects.
The people are concern about the radiation which is emitted and released by the security metal detectors that might probably cause danger to their health and their person.
The metal detector creates the electromagnetic fields that can cause the electrical interference to the electronic devices , So , it may harm the pacemakers and it can be fatal for those people , So , it is advised that they avoid passing through them.
The metal detectors can give a false alarm if the people are wearing some kind of jewelry , watch , phone , loose change or similar , So , some people can feel embarrassed and it can cause panic for no reason , The false alarm caused by the detectors can be inconvenient both for the security personnel and the person to whom the alarm turned on.
Are metal detectors effective?
While metal detectors may provide a visible response to concerns about school safety, there is little evidence to support their effectiveness at preventing school shootings or successfully detecting weapons at schools. Metal detectors also are expensive to purchase, staff, and maintain.
Do metal detectors have radiation?
In airports, metal detectors and millimeter wave machines use low energy, non-ionizing radiation to send energy across scanned surfaces.
What can block metal detectors?
What Material Can Block Metal Detectors? The post office uses x-rays, which are blocked by aluminum foil. Metal detectors are not likely to detect aluminum foil, however. If you use X-rays, then you will see a big blank spot in the suitcase, and you will be forced to open it by the top security officials.
Can metal detector detect gold?
Will any metal detector find gold?
Yes. Most metal detectors are capable of fully finding gold but some will do a much better job than others. Since gold has rather low mode conductivity, metal detectors that use higher frequencies will spot gold better than low frequency detectors.
What’s better than a metal detector?
Magnetic locators are more functional, and they can cover a broader range from the tip of the device to the object you’re trying to locate. Cost— Magnetic locators are pricier than metal detectors. For the purposes of professional detection (especially for ferrous metals), you’ll need to use a magnetic locator.
How deep can metal detectors detect?
Most metal detectors can detect objects about 4-8ʺ (10 – 20 cm) deep. In ideal conditions, a mid-range metal detector can reach 12-18ʺ (30-45 cm) underground. Some specialized detectors can go as deep as 65′ (20 m).
Are metal detectors good for schools?
The most obvious benefit of metal detectors at school entrances is the immediate detection of weapons as students and visitors enter the building. In schools that currently use detectors, students and guests have been stopped with guns and knives.
Are walk through metal detectors safe?
Walk-Through Metal Detectors are Safe and Effective
Therefore, even repeated exposure to metal detectors has no associated radiation risk.” With this in mind, airport metal detectors provide a very effective and safe method of enforcing security in airports, schools, and businesses.