Patent ID: 11860069
Assignee: MARATHON PETROLEUM COMPANY LP
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for determining and using standardized analyzer spectral responses to enhance a process for calibration of a plurality of spectroscopic analyzers such that for a given material each of the plurality of spectroscopic analyzers outputs a plurality of signals indicative of a plurality of material properties of the material, the plurality of material properties of the material output by each of the plurality of spectroscopic analyzers being substantially consistent with one another, the method comprising:
transferring one or more spectral models to each of the plurality of spectroscopic analyzers, each of the one or more spectral models being indicative of relationships between a spectrum or spectra and one or more of the plurality of material properties of one or more materials;
analyzing, via the first spectroscopic analyzer when in a first state during a first-state time period, a selected one or more first-state portfolio samples, thereby to output a standardized analyzer spectra portfolio for the selected one or more first-state portfolio samples, the standardized analyzer spectra portfolio comprising a first-state portfolio sample spectrum for each of the first-state portfolio samples;
analyzing, via each of a remainder of the plurality of spectroscopic analyzers when in a second state during a second-state time period, a selected one or more second-state portfolio samples, thereby to output second-state portfolio sample spectra for the selected one or more second-state portfolio samples, each of the second-state portfolio sample spectra being associated with a corresponding second-state portfolio sample, the selected one or more first-state portfolio samples including a greater number of samples than a number of samples included in the second-state portfolio samples, and the second-state time period being less than the first-state time period;
comparing one or more of the second-state portfolio sample spectra for the selected plurality of portfolio samples to the first-state sample spectra of a selected plurality of corresponding first-state multi-component samples;
determining, based at least in part on the comparing, for the one or more of the selected plurality of portfolio samples of the second-state portfolio sample spectra, a variance at one or more of a plurality of wavelengths or over a range of wavelengths between the second-state portfolio sample spectra output by each of the remainder of the plurality of spectroscopic analyzers when in the second state and the first-state sample spectra corresponding to the selected one or more first-state multi-component material samples output by the first spectroscopic analyzer in the first state;
analyzing, via one or more of the remainder of the plurality of spectroscopic analyzers when in the second state, a material received from a material source, thereby to output a material spectrum; and
transforming, based at least in part on the standardized analyzer spectra portfolio, the material spectrum, thereby to output a corrected material spectrum for the material when in the second state, the corrected material spectrum including one or more of an absorption-corrected spectrum, a transmittance-corrected spectrum, a transflectance-corrected spectrum, a reflectance-corrected spectrum, or an intensity-corrected spectrum and defining a standardized spectrum.