Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrophotometer
Patent
1991-01-22
1992-07-21
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrophotometer
356325, 356436, 356440, G01J 342, G01N 2105
Patent
active
051317460
ABSTRACT:
An on-line, fiber-optic based apparatus for monitoring the concentration of a chemical substance at a plurality of locations in a chemical processing system comprises a plurality of probes, each of which is at a different location in the system, a light source, optic fibers for carrying light to and from the probes, a multiplexer for switching light from the source from one probe to the next in series, a diode array spectrophotometer for producing a spectrum from the light received from the probes, and a computer programmed to analyze the spectra so produced. The probes allow the light to pass through the chemical substance so that a portion of the light is absorbed before being returned to the multiplexer. A standard and a reference cell are included for data validation and error checking.
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O'Rourke Patrick E.
Prather William S.
Van Hare David R.
Constant Richard E.
Dixon Harold M.
McGraw Vincent P.
Moser William R.
The United States of America as represented by the United States
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