METAL DETECTOR TYPE ERS Tray Metal Detectors: Optimal Protection for Your Machinery Our tray metal detectors type ERS, installed under the conveyor belt, detect any type of metal mixed with other products, protecting crushing machinery. They generate a constant electromagnetic field with advanced design and a microprocessor for high stability and sensitivity against vibrations and electrical interference. Robust, reliable, and easy to install, with no mechanical maintenance required. CE Certified. Optional: Atex Zone 22 (Ex-3D) and Atex Zone 21 (Ex-2D).