System and method for spectral analysis
First Claim
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1. A system for calculating the percentages of individual gases in a mixture of gases and contaminants comprising:
- (1) a plurality of test areas or gas cells adapted to contain samples of said gas mixture;
(2) a plurality of infrared light sources adapted to project light through each of said cells;
(3) a plurality of light filters placed either before or after said cells, each filter adapted to provide a predetermined wavelength range of infrared light corresponding to one of the gaseous components in said gas mixture;
(4) a plurality of light detectors calibrated to sense the infrared absorbance of the impinging light and adapted to provide a signal corresponding to the percentage by volume of each of the individual gas components of said mixture.
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Abstract
A method and system for identifying and calculating the percentages of gases, such as the automotive and other commercial refrigerant gases, in a gas mixture using infrared spectroscopy is disclosed. The novel system is compact, relatively inexpensive and has greater accuracy than those systems of the prior art.
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3 Claims
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1. A system for calculating the percentages of individual gases in a mixture of gases and contaminants comprising:
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(1) a plurality of test areas or gas cells adapted to contain samples of said gas mixture;
(2) a plurality of infrared light sources adapted to project light through each of said cells;
(3) a plurality of light filters placed either before or after said cells, each filter adapted to provide a predetermined wavelength range of infrared light corresponding to one of the gaseous components in said gas mixture;
(4) a plurality of light detectors calibrated to sense the infrared absorbance of the impinging light and adapted to provide a signal corresponding to the percentage by volume of each of the individual gas components of said mixture. - View Dependent Claims (2)
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3. A system for identifying and analyzing the amounts of individual refrigerants in a mixture of refrigerant components and contaminants comprising:
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(1) a plurality of test areas or gas cells adapted to contain samples of said mixture;
(2) a plurality of infrared light sources adapted to project light through each of said cells;
(3) a plurality of light filters placed either before or after said cells containing said samples, each filter adapted to provide a predetermined wavelength range of infrared light corresponding to one of the refrigerant components in said mixture;
(4) a plurality of light detectors calibrated to sense the infrared absorbance of the impinging light and adapted to provide a signal corresponding to the percentage by volume of each of the individual refrigerant components of said mixture;
(5) means to measure pressure and temperature of samples being analyzed; and
(6) means for determining the presence and amount of a contaminant (such as air), which is not detected optically.
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Specification