Inspection Systems

X-ray inspection systems work by producing beams of high frequency electromagnetic radiation (x-rays) in a generator. These beams are then directed at a desired target, which will absorb some of the rays while allowing others to pass through. On the opposite side of the target from the generator sits a detector which then reads the EM waves that make it through the target.

The higher the density/larger the size of the product, the less radiation will pass through. The result is an image produced by the detector which details the high and low density areas throughout the target. This is the same principle seen when making shadow puppets on a wall. Some light is blocked by the puppet, and the resulting shadow gives detail on the shape of the puppet. With x-rays, that detail is also internal.

The main difference between metal detectors and x-ray inspection systems is in the methodology of how each machine inspects for foreign materials. Metal detection relies on conductivity to locate stainless, ferrous and non-ferrous metals in product, while x-ray uses density differences between the product and foreign bodies to perform inspection. X-ray technology allows for a far greater range of foreign materials to be detected, including metal, glass, stone, bone, rubber, gasket (both metal detectable and non-metal detectable), plastic, and various other mid and high-density items. As a general rule of thumb, x-ray inspection systems are able to detect contaminants at a much smaller size than metal detectors.

Some products are limited by their composition and packaging with which inspection systems can be used. Products with metallic packaging, such as those with metallized foil, cannot be accurately inspected with a metal detector, and require the use of an x-ray system. The best way to determine which option is best for your application is to receive a consultation or free, no-obligation validation testing. We can test your exact product on a variety of different systems using certified test cards, or foreign material samples you provide, to offer you a formal report on the capabilities and expected performance of each type of technology. At TDI Packsys, we believe validation testing on your specific products is an integral step in choosing the right system for your needs.

No PPE is required to be worn while operating x-ray inspection systems from TDI Packsys. The use of lead lining and protective curtains in the x-ray mitigates radiation from the generator, allowing only a fraction of the radiation used in inspection to exit the system. The FDA regulates these systems, and has set a standard of 5 μSv/hour as the safe level of radiation. X-ray systems from TDI Packsys emit doses of less than 1 μSv an hour, well below the FDA allowable limit. Every day, we are exposed to background radiation naturally produced by the sun and various environmental factors. Each year, the average person is exposed to 2,400 μSv of this background radiation, a higher dose than you would get standing next to an active x-ray inspection system for more than 3 months straight.