Eriez E-Z Tec high-frequency DSP (digital signal processing) metal detectors with standard conveyor systems protect against ferrous and nonferrous metal contamination. The conveyor systems include a continuously welded, series 304 stainless steel frame; washdown drive; variable speed control; food-grade polypropylene (plastic chain) belt; belt-stop reject with a beacon and horn combination; and reject reset button; the electronics are housed within a NEMA 4X enclosure. The systems are available with 12-, 18- and 24-in. belt widths and include menu-driven control functions with a back-lit touch screen interface. They have variable belt speeds of 14 to 120 fpm and motors ranging from .75 to 1.5hp.