After the inspected goods have been exposed to X ray irradiation, the larger
the density of matter and the atomic number are, the greater the X-ray
absorption rate will be. And the protein, carbohydrate, fat, water and bones
(calcium), glass (silica), metal, and the composition contained in the food, is
also different to X-ray absorption ratio. The X-ray security detector is
implemented according to the principle mentioned above.
When products is sent to the X-ray irradiation area, detection device
will automatically determine X-ray transmission ratio. Due to foreign bodies in
food ingredients can absorb more X ray energy than food composition, therefore,
when the products containing foreign body exposed to the X ray radiation, the
energy will be absorbed a lot. The X-ray
machine will measure the beam intensity of content, so as to detect if the
objects is different from the product itself in the material composition of
foreign body.
Designed for highway, railway, customs, airports, ports and
public safety testing, it is widely used to detect the human body and whether
the luggage contains knives and guns.
It can be classified as
follow:
A, portable X-ray security detector
Main
features:
1. mainly adopts high performance vacuum ceramic image
intensifier, aesthetically pleasing and has a large clairvoyant object
radius.
2. It doesn't need a dark room to form the clear picture. Low
leakage radiation dose, without any protection.
B, the conveyor x-ray
inspection detector
This type of product has a large appearance and a
conveyor belt. Usually, it is mainly used for on-line detection of the foreign
body in the industrial products, such as metal, stone, mud, plastic, glass,
etc.
This type of products is also the mainstream of domestic products.
The efficiency is higher, and it is more powerful. If it has detected the
content of products that are foreign bodies, the machine will automatically
reject it, which greatly improved the work efficiency.
This type of X-ray
security detector is not expensive as it used to be. Price varies according
to the design, material, functions, after-sales service etc.
Main
features:
1. sound and light alarm: It will send out the sound signals and
alarm lamp when it is similar to the conditions.
2. the network
interface: It can connect multiple terminals at the same time when checking
luggage.
3. safer ray: Its ray emission is controlled automatically to
avoid the mistake.
4. only one key to turn off: Rotating the key, and the
equipment will shut down automatically and safely, which means that it does not
need complex multistep operation. It is more convenient and concise.
5.
eagle eye: The current amplification area can be easily seen. - See more at: http://www.eastimagesecurity.com/IndustryNews/How-to-Classify-the-X-Ray-Security-Detector.shtml
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