Choosing baggage scanners, simple X ray baggage scanners are selected as per requirement. That is an ultimate epitome for selecting the right product for right application of any project. How to choose is a very technical subject matter expertise. Selection of a baggage scanner for a project is based on some factors that are directly depended on requirements to achieve the goals.
All selection is based on project & the decisive factors are
- Application type
- Tunnel size
- Power generator
- Image quality & type
Typical tunnel size for the X Ray bagagge scanners (Table:1)
|Width (mm) ± 20%
|Height (mm) ± 20%
So tunnel size is selected on basis of application for a particular project. On basis of the tunnel size, the weight of the target to be scanned luggage or baggage is easily calculated from maximum to minimum hence impacts the use of roller comes picture. In nutshell the size of tunnel decides all other factors.
The X Rays (Roentgen rays) generated must & should be safe for users as well as targets and allow detecting the choicest target in a very safe, precise & desired way. The energy radiated by the X ray tubes is from 80KV to 160KV. The generated energy must be safe for the products & detection targets but precautions are must and should for the operators and people around so the limit is associated with the leakage as well as usage. The exit curtains are made of the special polymer along the heavy metals to shield radiation quite well. The X ray leakage usually is maintained with limit of less than <0.5 μSv/h (at a distance of 50mm from an external housing meeting international and domestic health as well as safety standards.
The film safety is very important factor and must be in accordance with ASA/ISO1600 film safe standard. (ASA & ISO are same, ASA was changed to ISO to internationalise the standard). The standard ASA/ISO1600 states the determination of light absorption on moulded specimens produced using different periods of heating.
In general the major specification factors considered for the selection of baggage scanners are the tunnel size, maximum load, wire & spatial resolution, the X ray generator and X ray leakage, film safety to guarantee ASA/ISO1600 film.