Patent ID: 8735820
Filing Date: 2014-05-27
Classification: G01J,G01N

Abstract:
1. A method for deriving a refinery product property value, the method comprising: spectrographically analyzing a test product to obtain test product spectral data; searching a spectral data library comprising reference spectral data associated with at least one reference product; selecting reference spectral data from a reference product among said at least one reference product; wherein a part of the selected reference spectral data resembles a part of said test product spectral data; determining a property value of the test product using a spectrographic analyzer and calibration data; wherein said calibration data includes data from more than one reference product; determining a property value for said reference product using data stored in said spectral data library and said calibration data from more than one reference product; determining a difference between the spectrographically-determined property values of the test product and the property value for said reference product determined using the data stored in said spectral data library and said calibration data from said more than one reference product; and adding said difference to a non-spectrographically-determined property value of the reference product to derive a certified property value for the test product.