The product inspection system XRE detects all foreign objects which due to their density, chemical components or mechanical dimensions absorb X-rays at a higher or lower degree than the surrounding product. During production numerous detection tasks can be safely fulfilled such as the detection of metals, glass, ceramics, stones, raw bones, PVC, Teflon, rubber, glass fiber reinforced plastics etc. in packaged or unpackaged food (non-magnetic stainless steels and non-ferrous metals also in aluminum packaged food).