Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2007-05-04
2010-11-02
Geisel, Kara E (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
Reexamination Certificate
active
07826054
ABSTRACT:
An instrumentation system utilizes a single light source collimated through windows through a gas line in communication with a fuel cell. As each beam passes through each window, the gas stream will attenuate each beam. A diffraction grating disperses each attenuated beam and transmits particular wavelength bands through a focusing system to a detector. The measured concentration in the gas stream may then be utilized by a controller to determine the amount of power produced by the cell, determine potential leaks, or determine incomplete reaction.
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European Search Report mailed Nov. 27, 2008.
Partial European Search Report, mailed Aug. 29, 2008.
Carroll Joseph P.
Zillmer Andrew J.
Carlson & Gaskey & Olds PC
Geisel Kara E
Pratt & Whitney Rocketdyne Inc.
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