Several questions to pay attention to when purchasing security doors
1, sensitivity. A pin can be detected in the middle of the door. Because the principle of the security door is that when the metal object passes through the magnetic field generated by the columns on both sides of the door, it will cause magnetic field induction and alarm, which will inevitably lead to the phenomenon that the sensitivity will decrease from the two sides of the door panel to the middle area, that is, both sides close to the door board. The sensitivity is higher than in the middle. Many security door manufacturers now claim to be able to detect a pin-sized metal, but in fact many manufacturers can barely measure it when they are close to the two door panels, and there is no response at all in the middle. In the case of excluding belt buckles, it is necessary to be able to detect small pieces of ferrous metal. In the case of excluding belt buckles, keys, mobile phones, and coins, it is necessary to detect controlled tools and firearms.
2, shock resistance: the door can not continuously ring when shaking. The stability and anti-interference ability of a security door directly affect the normal use of security doors. Some companies and users did not notice the relevant aspects or were deliberately avoided by the manufacturers when they purchased the security inspection door, resulting in poor stability of the purchased security door. If there is any sign of trouble, the company will continue to report false positives and seriously affect normal use. Based on the principle of the magnetic field induction of the security door, when the magnetic field of the security door generates vibration, it is easy to cause false alarms. A security door that passes the quality check, even if no one passes, even if the magnetic field oscillates (such as strong wind or flapping the door and causing the door to shake), false alarms should not occur. When the magnetic field oscillates, it is precisely when someone passes, and it is also necessary to guarantee a rapid return to normal, and it cannot always be a false alarm.
3, stability: carrying a pin in the middle of the door should go once once, can not miss reports and reports. Poor quality security gates will alarm when approaching their sensitivity limits, and sometimes do not alarm, and put things in the three areas, showing the alarm in five locations.
4, detection effectiveness. Security doors have automatic statistics "pass number" and "alarm times" function. If the number of people shown does not match the number actually passed, it may result in a missed report, which means that there are loopholes in the security screening. A good security gate should be able to walk one hundred times and detect one hundred times.
5, qualification and certification. Security door production must have a production license issued by the Ministry of Health, must have a quality safety inspection certificate issued by the department, and the export must pass CE certification. Many do not have the relevant qualifications and certifications. The majority of users must understand clearly before buying.
General knowledge about the use of security doors
First, installation precautions
1. Except for full-rain protection type security doors, other types of security doors should not be exposed to rain, and they must be covered under the open air.
2. There must be no large metal objects within 1m around the security door, such as large iron gates, elevators, and large iron posts.
3, security door installation must be fixed and secure, to avoid the body shaking caused by strong winds or collisions.
4, away from objects that generate magnetic fields, such as distribution boxes, electrical equipment.
Second, security doors pass regulations
1. The queues pass in order, cannot be crowded, and cannot be deliberately slowed down.
2. When there is no alarm, the second person can pass the first person out of the door; when the alarm occurs, the alarm sound must be stopped before it can pass.
3, can not hit the door when passing.
4. When passing through, the outside of the door cannot pass through people carrying metal objects.
Three, maintenance
1, the door surface stains can be wiped with a damp cloth.
2, oil traces and more difficult to clean the stains can be used day water, alcohol, wipe water wipe.
3, need to shut down more than 2 hours a day, to prevent overheating long-term components and reduce performance.
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