The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
Jan. 28, 2011
Alexei Saveliev, Cary, NC (US);
Vilas Vyankatrao Jangale, Raleigh, NC (US);
Sergeui Zelepouga, Hoffman Estates, IL (US);
John Pratapas, Naperville, IL (US);
Alexei Saveliev, Cary, NC (US);
Vilas Vyankatrao Jangale, Raleigh, NC (US);
Sergeui Zelepouga, Hoffman Estates, IL (US);
John Pratapas, Naperville, IL (US);
Gas Technology Institute, Des Plaines, IL (US);
North Carolina State University, Raleigh, NC (US);
Abstract
A method and apparatus for absorbance correction in a spectroscopic heating value sensor in which a reference light intensity measurement is made on a non-absorbing reference fluid, a light intensity measurement is made on a sample fluid, and a measured light absorbance of the sample fluid is determined. A corrective light intensity measurement at a non-absorbing wavelength of the sample fluid is made on the sample fluid from which an absorbance correction factor is determined. The absorbance correction factor is then applied to the measured light absorbance of the sample fluid to arrive at a true or accurate absorbance for the sample fluid.