Patent ID: 7334453

Claim:
Device for collecting a sample of particulates from a flowing gas comprising: (a) a housing including an inlet member and an outlet member for the gas and defining a flow path for the gas from the inlet member to the outlet member, the inlet member and the outlet member being normally attached directly to each other but readily separable; and (b) a particle collecting assembly within the housing, the particle collecting assembly including: (1) a substantially planar particle impact disc; (2) a filter; (3) a support member for supporting the particle impact disc, so that the impact disc is situated substantially orthogonal to the flow path and the flow path is directed around the circumference of the impact disc; (4) a capsule bottom for supporting the filter so that the filter is directly vertically below the impact disc so that the flow path flows vertically downward from the impact disc to the filter, the capsule bottom directly engaging the support member so that the particle collection assembly can be replaced as a single piece when the inlet member and outlet member are separated, thereby replacing both the filter and the impact disc in one step so that the entire sampler can be reused in as short amount of time as possible; the particle collecting assembly can be disengaged so that the filter and impact disc can be removed and replaced.