Optical rock dust meter field evaluation.
Greninger-N; Perlee-HE; Sapko-MJ
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9385, 1991 Jan; :1-11
The U.S. Bureau of Mines has developed a portable meter for measuring the component concentrations in binary dust mixtures whose constituents have different optical reflectivities. The meter has been successfully tested with coal dust-rock dust mixtures taken from coal mines in Europe and the United States and fluorinated- carbon mixtures that change from carbon black to pure white during fluorination. Additional study has also substantiated the theoretical expressions used in the design of the meter.
Optical-measurement; Reflectance; Safety-engineering; Dust-explosions; Optical-equipment; Mathematical-models; Optical-measuring-instruments; Limestone; Coal-dust; Reflectometers; Coal-mining
IH; Report of Investigations
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9385