A metal detector frame is very common today - at train stations, shops and clubs. Such devices work by creating an electromagnetic field, when in the case of the appearance of metal objects it is distorted. Stationary models, which are also called arched, are considered more perfect and reliable in operation.
What is the essence
The metal detector is placed in the aisle area or immediately after the door, or in a special fenced area. Power is supplied by alternating current. The installation features of these devices include a flat surface that does not emit vibrations and distance from any metal products. In general, the main way to protect crowded spaces is precisely a metal detector frame. The instruction of each model prescribes attention to a number of trifles regarding configuration and proper installation. All stationary models have a general principle of operation, and differences are expressed only in technical characteristics:
- scale step size when setting sensitivity;
- the possibility of using several detectors on the same network;
- the possibility of operation in an external environment;
- design.
Design Features
A metal detector is a device that detects and classifies a metal. The wire lies inside the transmission frame, and electric current moves along it - it creates an electromagnetic field. If some metal object is near the frame, the magnetic field will begin to change, as a result of which an electric current will be produced. He will create a magnetic field that will move in the opposite direction to the main field of the transmitter, and metal will be detected. The external metal detector frame also has a coil that neutralizes the effect of the transmitting coil as much as possible - it is called a receiver. When choosing this equipment, it is important to consider the quality of discrimination, that is, the detector must recognize and classify detected objects.
How does it work
How do metal detector frames work? In fact, the principle is simple: a radio signal is sent from one wall of the frame to another, which is then returned. But radio waves cannot pass through the metal, so when they collide with metal products, the reflected signal will return much faster. When the reflection time of the sent signal decreases, the device immediately triggers.
In this situation, the frames will respond to any metal products - from rivets on clothes to zippers on a bag. Setting the metal detector frame allows you to reduce the sensitivity of the device, which at the same time does not affect its effectiveness. It turns out that all large metal objects that will sweep through the frame will be immediately detected.
Is there any harm
Today, it is increasingly being said that a metal detector frame is harmful to human health. Experts say that the degree of harmfulness depends only on the principle of operation of a particular device. Most frames record changes in the magnetic field if metallic objects are introduced into it. When passing through the framework, an electromagnetic field penetrates us, but it is of low intensity. It turns out that the metal detector frame cannot be harmful.
GARRETT Magnascanner CS-5000
This is the simplest but at the same time effective metal detector made in the USA. The upper part of the arch is supplemented by a control unit. You can configure the frame to respond to any mass of metal - from a few grams to a kilogram or more. The stationary frames of the GARRETT Magnascanner CS-5000 metal detectors have a number of features:
- built-in programs in the amount of 20 pieces for various installation conditions - at school or at the airport;
- You can change passwords that will control the device settings;
- each frame is complemented by a range of accessories;
- each frame program is set to 200 sensitivity levels;
- status is constantly displayed;
- the ability to adjust the frame so that false positives are filtered;
- the framework of this brand can be put side by side, and they will work effectively
The GARRETT Magnascanner CS-5000 metal detector frame is made in the form of an arch, the panels of which are located at a distance of 80 cm from each other. The control and display unit located on top is protected from external influences. Many buyers choose the products of this proven brand, among the advantages of noting the modern design, practicality of the coating and impact resistance. When metal enters the field of view of the frame, this is signaled by a light and sound signal.
Search-VP
The Search-VP stationary metal detector frame easily detects firearms and large metal objects that are often hidden under clothing. The peculiarity of the model is that it can also be operated in the open air under the influence of external natural factors. The distinctive features of this framework include the following:
- Low probability of false positives.
- Automatic adjustment after the frame has been turned on.
- The design is collapsible, so the installation of a metal detector framework is possible in any room and even on the street.
- The degree of sensitivity is adjustable.
- Low power consumption.
Web-R
The arched metal detector has microprocessor control and is widely used when it is necessary to detect metal objects when people are being searched.
The model has a modern design and the ability to operate in any temperature conditions. Installing metal detector frames is simple, and the equipment also has a number of additional features:
- you can configure the frames and manage them with the remote control;
- there is a built-in self-diagnosis system;
- during installation, the control unit is located in the frame or is taken out of their limits;
- the ability to synchronize multiple detectors that can work simultaneously.
Web-SM1
These metal detector frames are portable, and mobility is the main advantage that many users have noted. The design itself is collapsible and consists of 7 elements. Thanks to the circuit controlled by the microprocessor, a homogeneous and high-quality response to metal objects located in the range of the device is ensured. The advantage of the model is its ability to work on battery power. In addition, due to its light weight, it is possible to transport the device even in the trunk of a car. The throughput of the metal detector frames of this model is 40-60 people.
“Checkpoint RS-800”
The stationary arched metal detector of this brand allows you to check a person and determine any metal objects. The system operates in six zones and has adjustable sensitivity; it itself counts passengers and the number of alarms. The manufacturer guarantees absolute safety when a person passes through the framework. Signal processing is carried out using a promising unit, so that the device works reliably and stably in any conditions.
"Cordon C1"
This frame detects metal objects easily, and information about detected objects is displayed on the front panel thanks to a 6-zone indicator. A feature of the model is the ability to adjust sensitivity over a wide range.
These systems are designed specifically to equip stations, train stations, stadiums, banks, schools, hospitals and any institution with a lot of people. The distinctive features of this framework include:
- maximum level of security;
- compliance with technical regulations and standards;
- good bandwidth;
- work in six detection zones;
- presence on the front panel of LED indication;
- reliable protection against penetration thanks to a software password.
Ceia
High selectivity is the main feature that distinguishes this metal detector frame. The principle of operation of this equipment is the same as that of other analogues. Buyers say that this framework is ideal for installation where there is high traffic - in hotels, museums, concert halls. The second advantage, according to customers, is an aesthetic design that fits seamlessly into any interior. The system allows you to adjust the degree of sensitivity, and the installation is simple, not requiring preliminary and periodic calibration.
conclusions
Modern technologies offer great opportunities in order to ensure good bandwidth of people in various institutions and at the same time prevent emergencies. The most important thing is that all metal detector frames are safe for people, which is confirmed by quality certificates. The ease of installation allows you to ensure security in any public place, timely detecting illegally carried metal objects.