公开(公告)号：US12055506B2

公开(公告)日：2024-08-06

申请号：US17632043

申请日：2020-05-28

Applicant: Foss Analytical A/S

Inventor： Per Waaben Hansen ,  Mads Lykke Andersen

IPC: G01N27/06 ,  G01N21/3577 ,  G01N33/04

CPC classification number: G01N27/06 ,  G01N21/3577 ,  G01N33/04

Abstract: A method of standardizing an output of an electrical property sensor includes calculating a reference magnitude (Condr) of an electrical property of an electrically conductive liquid, based on obtaining, by a spectrometer, spectral data resulting from an interaction of light with the electrically conductive liquid, and applying, in a data processor, a mathematical model to the spectral data to calculate the reference magnitude (Condr) of the electrical property, wherein the mathematical model links the spectral data to magnitudes of the electrical property; comparing, in the data processor, a measured magnitude (Condm) of the electrical property of the electrically conductive liquid with a reference magnitude (Condr) of the electrical property, wherein the measured magnitude (Condm) of the electrical property is obtained with the electrical property sensor; determining, in the data processor, a standardization factor (F) dependent on a ratio of the reference magnitude (Condr) and the measured magnitude (Condm).

公开(公告)号：US11965823B2

公开(公告)日：2024-04-23

申请号：US17629532

申请日：2020-05-29

Applicant: Foss Analytical A/S

Inventor： Per Waaben Hansen ,  Jeppe Sandvik Clausen

IPC: G01N21/27 ,  G01N21/3577 ,  G01N21/35 ,  G01N33/04

CPC classification number: G01N21/274 ,  G01N21/3577 ,  G01N2021/3595 ,  G01N33/04 ,  G01N2201/1214 ,  G01N2201/129

Abstract: A method of correcting for an amplitude change in a spectrometric instrument output includes: exposing a sample in a sample holder to electromagnetic radiation at a plurality of wavenumbers; detecting electromagnetic absorption intensities in the sample at the plurality of wavenumbers; providing to a computer device the detected electromagnetic absorption intensities indexed against wavenumber as spectral data; applying in the computer device a mathematical transform (Icorr) to the spectral data to correct for an amplitude change in the spectrometric instrument's output and calculated by determining a difference (Δ(SBZ)/) between first derivatives of a logarithmic transformation of spectral data (SBZ) from the zero material sample at two different wavenumber ranges (log10(SBZ(x1))/ and log10(SBZ(x2))/); and calculating the mathematical transform (Icorr) as a function inversely dependent on the determined difference (Δ(SBZ)/).