The frame-metal detector is very common today - at train stations, in shops and clubs. Such devices work by creating an electromagnetic field, when in the event of the appearance of metal objects, it is distorted. Stationary models, which are also called arched ones, are considered more perfect and reliable in operation.
What's the point
The metal detector is placed in the passage area or immediately after the door, or in a special fenced area. Power is supplied by alternating current. The features of the installation of these devices include a flat surface that does not emit vibrations, and remoteness from any metal products. In general, the main way to protect crowded spaces is precisely the metal detector frame. The instructions for each model prescribe attention to a number of little things regarding setup and proper installation. All stationary models have a common principle of operation, and the differences are expressed only in technical characteristics:
- scale step size when setting sensitivity;
- possibility of using several detectors at once in one network;
- outdoor capability;
- design.
Design features
Metal detector is a device that detects and classifies metal. The wire lies inside the transmitting frame, and electric current moves through it - it creates an electromagnetic field. If there is some metal object near the frame, the magnetic field will begin to change, as a result of which an electric current will be produced. They will create a magnetic field that will move in the opposite direction to the main field of the transmitter, and the metal will be detected. The outer frame-metal detector 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 the detected objects.
How it works
How do frame metal detectors work? In fact, the principle is simple: a radio signal is sent from one wall of the frame to another, which then returns. But radio waves can't travel through metal, so when hitting metal objects, the reflected signal will return much faster. When the reflection time of the sent signal is reduced, the device immediately fires.
In this scenario, the frames will react to any metal products - from rivets on clothes to zippers on a bag. Adjustment of the frame-metal detector allows you to reduce the sensitivity of the device, which at the same time does not affect its effectiveness. It turns out,that any large metal objects that pass 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 he alth. 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 metal objects are introduced into it. When passing through the frame, we are penetrated by an electromagnetic field, but it is of low intensity. It turns out that the frame-metal detector cannot harm.
GARRETT Magnascanner CS-5000
This is the simplest yet most effective metal detector made in the USA. The upper part of the arch is supplemented with a control unit. You can set the frame to respond to any mass of metal - from a few grams to a kilogram or more. Stationary frame metal detectors GARRETT Magnascanner CS-5000 have a number of features:
- 20 built-in programs for various installation environments - school or airport;
- you can change passwords that will control device settings;
- each frame comes with a range of accessories;
- each frame program set to 200 sensitivity levels;
- status constantly displayed;
- the ability to customize the frame so that false positives are filtered;
- frames of this brand can be put side by side, and they will work effectively
Frame-The GARRETT Magnascanner CS-5000 metal detector 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 indication unit, located on top, is protected from external influences. Many buyers choose the products of this proven brand, noting the modernity of design, the practicality of the coating and impact resistance among the advantages. When metal enters the field of view of the frame, this is signaled by a light and sound signal.
Search-VP
The Poisk-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 be operated outdoors under the influence of external natural factors. The distinctive features of this frame 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 the metal detector frames is possible in any premises and even on the street.
- Degree of sensitivity adjustable.
- Low power consumption.
Web-R
The arched metal detector is microprocessor controlled and widely used when it is necessary to detect metal objects when screening people.
The model has a modern design and the ability to operate in any temperature conditions. Installation of metal detector frames is carried outsimple, besides, the equipment has a number of additional features:
- you can set up the frames and control them with the remote control;
- has a built-in self-diagnosis system;
- during installation, the control unit is located in the frame or is taken out of their limits;
- possibility to synchronize multiple detectors that can work simultaneously.
Web-SM1
These metal detector frames are portable, and portability is the main advantage that many users note. The design itself is collapsible and consists of 7 elements. Thanks to the circuit controlled by the microprocessor, a uniform and high-quality response to metal objects located in the area of the device is ensured. The advantage of the model is the possibility of battery operation. In addition, due to its low weight, you can transport the device even in the trunk of a car. The throughput capacity of the metal detector frame 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 identify 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 frame. Signal processing is carried out using a perspective block, thanks to which the device works reliably and stably in anyconditions.
C1 Cordon
This frame detects metal objects easily, and information about the detected objects is displayed on the front panel thanks to the 6-zone indicator. The peculiarity of the model is the ability to adjust the sensitivity in a wide range.
These systems are specially designed to equip stations, train stations, stadiums, banks, schools, hospitals and any establishments where there are a lot of people. The distinctive features of this frame include:
- maximum security;
- compliance with technical regulations and standards;
- good throughput;
- work in six detection zones;
- presence of LED indication on the front panel;
- strong intrusion protection with 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 these frames are ideal for installation where there is high traffic - in hotels, museums, concert halls. The second advantage, according to buyers, 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, requiring no preliminary and periodic calibration.
Conclusions
Modern technologies open up bigopportunities to ensure good throughput of people in various establishments and at the same time prevent the occurrence of emergencies. The most important thing is that all metal detector frames are safe for people, which is also confirmed by quality certificates. Ease of installation ensures security in any crowded area by detecting illegally smuggled metal objects in a timely manner.
