Method and apparatus for indicating the size distribution of particles in a flowing medium
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United States of America Patent
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Mar 2, 1982
Grant Date -
N/A
app pub date -
Jun 11, 1979
filing date -
Jun 15, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus for determining the particle size distribution with respect to selected fraction classes in the direction of flow of a medium are provided in accordance with the teachings of the present invention. A plurality of measuring configurations are employed to pass light through the medium to be measured and to detect the light transmitted therethrough. Each measuring configuration exhibits different resolution with respect to one another and particle size distribution for selected fraction classes is determined as a function of measuring signals derived by each of the plurality of measuring configurations from the transmitted light detected during a run of the medium and sensitivity coefficients of the measuring signals. The sensitivity coefficients employed are dependent upon the associated measuring configuration and fraction class. Thus rather than counting particles per se a measure of the concentration in each fraction class is obtained.
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