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DESIGN, DEVELOPMENT, AND DEMONSTRATION OF A FINE PARTICULATE MEASURING DEVICE
Citation:
Lilienfeld, P., D. Anderson, AND D. Cooper. DESIGN, DEVELOPMENT, AND DEMONSTRATION OF A FINE PARTICULATE MEASURING DEVICE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-77/077 (NTIS PB270084), 1977.
Description:
The report describes the design, development, and testing of a fine particulate source monitoring instrument for real-time measurement of mass concentration as a function of aerodynamic particle size. It includes a literature review and selection of the operating principle on which the instrument is based. The described device size-segregates particulates using inertial jet-to-plate impaction on a continuously moving substrate, and determines collected mass using beta radiation attenuation. The collection-detection system consists of a 7-impaction-stage cascaded configuration for direct insertion into a stack, with beta mass sensing at each collection stage. The program's initial objective--to develop an instrument that could be operated at up to 260C (500F)--could not be met: the beta detectors failed to operate satisfactorily when exposed to such temperatures. However, the instrument was completed and tested satisfactorily in a test tunnel at room temperature.