COARSE PARTICLE EXPOSURE MONITOR

摘要

A filter apparatus that includes a housing having at least one opening by which a fluid is Introduced thereto, a first plate inside the housing and having a plurality of inlets offset from a central axis of the housing and angularly separated from each other. The inlets are configured to pass the fluid thereto. The filter apparatus includes a second plate inside the housing and disposed downstream from the first plate. The second plate has angularly extending outlets disposed at a radial distance from the central axis which is beyond the plurality of inlets such that the fluid is diverted radially outward in passing from the first plate through the second plate. The filter apparatus includes a first filter provided on the second plate underneath the plurality of inlets and configured to trap particles in the fluid which are not diverted to the angularly extending outlets, and includes an exit.