Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1996-05-07
1997-01-21
Gonzalez, Frank
Optics: measuring and testing
By particle light scattering
With photocell detection
356440, 68 1227, G01N 2100
Patent
active
055964087
ABSTRACT:
A turbidity sensor is provided in which a light source, a first photosensitive device and a second photosensitive device are arranged in a manner that permits easy removal and replacement of a cover which is used to protect the components. The cover is attachable to a support structure. The light source, which can be a light emitting diode, is attached to the support structure. The first and second photosensitive devices are also attached to the support structure. Light scattered by particulates in a fluid are directed toward the support structure and received by the second photosensitive device. Light which passes through a detection zone and is not scattered by the particular matter in the monitored fluid passes to a first photosensitive device. Many different types and shapes of covers can be used in conjunction with a single style support structure. This flexibility simplifies the manufacture of the turbidity sensors and reduces the costs that would otherwise be incurred if individual support structures were necessary for each different style of cover.
REFERENCES:
patent: 5291626 (1994-03-01), Molnar et al.
patent: 5446531 (1995-08-01), Boyer et al.
patent: 5485013 (1996-01-01), Cummins
Cummins Brad L.
Erickson Timothy K.
O'Brien Gary R.
Sheriff Alan V.
Sies Duane J.
Gonzalez Frank
Honeywell Inc.
Lanyi William D.
Merlino Amanda
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