Apparatus and method for measuring smoke opacity of a plume of s

Details Apparatus and method for measuring smoke opacity of a plume of s Apparatus and method for measuring smoke opacity of a plume of s

1992-11-09

1994-11-08

Rosenberger, Richard A.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356437, G01N 1506

Patent

active

053631986

ABSTRACT:
A two dimensional light beam array from which a plume of smoke, such as from a diesel engine, passes. Beams of light are projected across the array by light sources for detection by light detectors in order to measure the transmittance or opacity of the beam of smoke between any given source and detector. By projecting beams of light in two dimensions across the array, the diameter and length of intersection of the light beam which projects through the diameter may be determined. To determine this length enables a calculation of a smoke density value for that plume of smoke. Also, by projecting beams of light in two dimensions across the array the position of the smoke plume within the array may be determined.

REFERENCES:
patent: 4448534 (1984-05-01), Wertz et al.
patent: 4719360 (1988-01-01), Kontani et al.

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