New PM10 inlet design and evaluation

A new PM10 inlet for a beta-gauge sampler was designed based on the particle cup impactor concept. The performance of the inlet was evaluated at near-zero wind velocity in the test chamber and at the wind velocities of 2 and 8 km/hr in the wind tunnel. The performance indicated that particles with aerodynamic diameters of 10 mm or larger were collected in the particle cup and the inlet proved to meet the basic requirement of PM10 sampling