Aperture metal detection is a highly effective means of protecting almost any type of machinery that may be damaged by metal parts or pieces. An aperture style system provides superior metal detection for both ferrous and non-ferrous metal, and will detect metal either on or above the conveyor belt.

This graph represents the test results on a aperture style metal detector mounted on an EMI conveyor. The graph indicates the detection capabilities of the detector based on the size of the metal part and the height of the aperture opening. The test was performed with ferrous, non-ferrous and stainless steel to represent the wide range of metals that can be detected.

The new EMI Aperture style metal detector is specifically designed for use with EMI conveyors. The closed loop system wraps completely around the conveyor belt, and is built into a specially constructed, non-metalic, reinforced conveyor section. Control features include self-monitoring electronics, noise suppression and temperature compensation. All basic adjustments are made at the front panel.

When metal is detected, the unit will stop the conveyor and signal an operator to remove the metal and reset the system. If automatic quality control is desired, the system can be combined with a parts diverter or reject chute to remove the suspect material.

Aperture style metal detection units are available in a number of sizes, depending upon the height of the aperture opening and the type of metal being detected.