Pay attention to the following points when purchasing security doors 【Official website：https://secuzoan.com/uploads/allimg/20230608/1-23060QH0524X.jpg】
The price of security doors on the market now ranges from a few thousand to tens of thousands. Faced with security doors with different prices, people often choose blindly. The following will explain how to buy security doors and when to buy security doors. A few things to note.
1. Detection ability
When the human body passes through the security gate, whether it can 100% detect dangerous metal objects hidden in the body, and display the location of dangerous metal objects with high brightness in multiple sections. The detection capability of the security gate involves the detection uniformity of sensitivity.
1. Sensitivity: The sensitivity of security gates is divided into levels A, B, and C. The highest level is A, which is generally used in high-demand industries such as prisons and chip detection. Civil aviation requirements are generally level B, but the detection uniformity is extremely high.
2. Detection uniformity: This is very important for security inspection doors. Generally, the bottom detection ability of security inspection doors is weak. Even if the local sensitivity is improved, it is often difficult to meet the highest level requirements. The general testing method is to ensure that all locations test the same metal. Whether the objects all alarm or not alarm at all, each location is tested 10 times. Only a higher-level security door can achieve uniform detection in each area.
Since the principle of the security door is that when a metal object passes through the magnetic field generated by the pillars on both sides of the door, it will cause magnetic field induction and alarm. This will inevitably lead to the phenomenon that the sensitivity will decrease along with the two sides of the door panel toward the middle area, that is, the two sides are close to the door panel. High sensitivity will be higher than in the middle. Nowadays, many manufacturers of security inspection machines also produce security doors and claim to be able to detect metal the size of a paper clip. However, in fact, many manufacturers can barely detect it only when they are very close to the door panels on both sides. In the middle, there is no response at all. Small pieces of metal can be detected when conveyor belt buckles are removed, and controlled knives and firearms can be detected when conveyor belt buckles, keys, mobile phones, and coins are removed.
There is a certain correlation between detection uniformity and stability, and no false alarms or false alarms are allowed. Poor-quality security doors will alarm when they are close to their sensitivity limit, and sometimes they will not alarm.
2. Stability and self-diagnosis function
It has a power-on self-diagnosis function, which can self-discover the faults of each system and display them on the control panel. It can also detect that when the surrounding magnetic field affects the work, it will automatically alarm and indicate that it has stopped working.
3. Anti-interference ability
Whether it is free from interference from security inspection equipment such as security X-ray machines or other electromagnetic signals, and can be emitted by multiple detection doors at close range (less than 15CM) without interfering with each other.
4. Earthquake resistance
The door body cannot make continuous sounds when shaking. The stability and anti-interference ability of a security door directly affect the normal use of the security door. Some companies and users do not pay attention to relevant aspects when purchasing security doors or are confused by some manufacturers. Deliberate avoidance leads to the principle of magnetic field induction in the purchased security door. When the security door vibrates in a magnetic field or an environmental magnetic field, it is easy to cause false alarms. A security door with good quality will vibrate even if no one passes through it. (For example, strong wind blows and the door panel shakes due to flapping) There should not be false alarms, but it should show that the current magnetic field is abnormal, and someone happens to be passing by when the magnetic field is oscillating. It is also necessary to ensure that the message speed returns to normal, and that false alarms cannot continue.
5. Detection effectiveness
Generally, security gates have the function of automatically counting the number of people passing through and the number of alarms. If the displayed number of people does not match the actual number of people passing through, it may result in false negatives, which means there are loopholes in the security check. A good security gate should be able to be tested a hundred times a hundred times.
6. Parameterized management
For different security inspection levels or different use occasions, the security inspection levels issued by international authoritative organizations should be built-in, allowing users to provide multiple sets of parameters according to different security inspection levels, so that they can be directly selected when using. Currently, most security inspection doors can provide this Quickly select parameters or change parameters remotely, or develop a fully personalized parameter storage plan. Some security gates support smart card authorization operations.
7. Qualification and security inspection certification
The production of security doors must pass a quality and security inspection certificate with testing qualifications (all test items including environmental adaptability are tested in accordance with the testing performance requirements and testing methods of GB15210-2003), and exports must pass CE certification. The electromagnetic field is harmless to pregnant women, life support systems and multimedia disks.
【Official website：https://secuzoan.com/uploads/allimg/20230608/1-23060QH0524X.jpg】
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