Metal detectors provide the community with an essential tool to screen individuals that may be carrying weapons or contraband that contain metallic components. Available in walk-through and handheld models, metal detectors are commonly used at checkpoints in airports, schools, courthouses, prisons, and military installations.
Walk through metal detectors can be designed for either indoor or outdoor use. Outdoor models are weatherproof and are often used at temporary venues, such as concerts or sporting events. Indoor models are typically installed at a fixed location. They can, however, be moved if needed.
Metal detector uses electromagnetic field passive or actively detects the existence of metal objects. Passive detection measurement measures the changes in the earth magnetic field caused by objects. In active detection, the metal detector is in
The arch of the walking model or in the space near the handheld model to determine the metal amount in the object.
Metals such as iron, nickel and cobalt are detected by passive and active metal detectors. Other metals, such as copper, brass and aluminum, are detected only by active means.
The exercise metal detector is classified as a single area or multiple regions. Multi -area
Technology is replacing single -zone technology that has been used for more than 30 years. In the multi -area metal detector, the arches are divided into horizontal areas. The sensitivity of each area can be adjusted to improve the ability of metal detectors to distinguish the ability of weapons and metal items that do not constitute dangerous weapons and metal items, such as keys and coins. The horizontal area can be further divided into vertical departments. This can identify the general position of weapons or other prohibited products.
There are several design trends walking in metal detectors. One is to integrate the components composed of a metal detector as a security system. This integration allows operators to remotely monitor the metal detector and lock the access door when triggering alarm. Another design trend is to contain digital camera functions, which capture personal images through metal detectors. This function can be determined by assistance to escape
Some factors that need to be considered when purchasing or implementing metal detectors include power requirements, sensitivity settings and daily testing. Standard 110 volts or 220 volt sockets provide power for indoor and outdoor pedestrian metal detectors. If the standard socket cannot be used at the checkpoint position, it usually contains the rechargeable battery pack. The battery pack usually provides power supply for up to three days of continuous operation. Handheld metal detectors can provide up to 80 hours of continuous operation, and can provide motivation through 9 volts (V) batteries or rechargeable batteries.
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