Operating Principle

The cyclone operates as a pre-cut device, which removes all particles larger than the cyclone cut-size. The cyclone operates by drawing a sample flow through the device. The sample enters a conical cyclone chamber tangentially, where it forms a vortex. The formed vortex causes particles with sufficient inertia to impact onto the chamber walls, from where they drop into the collection cup. The cyclone cut-size is affected by a number of parameters, e.g. sample flow rate, temperature, pressure and humidity. These effects can be easily taken into account by using the provided excel-sheet, which calculates the cut-size in all conditions according to EPA standard 201A.