Nonintrusive airborne iron based particle detector

摘要

The present invention is an apparatus for detecting iron based particulate matter in air/gas streams. The sensor 10 includes a flow through sensor body 11 having an interior surface. A high power magnet 12 for use in attracting airborne iron particulate matter is formed as part 13 of the interior surface of the sensor body. A high contrast photoelectric sensor 14 coupled to a fiber optic bundle 15 is used for detecting changes in the contrast of the magnetic surface.