Spectrometric measurement method

A spectrometric measurement method of, in one measurement situation or in multiple different measurement situations within a predetermined application with at least one spectrometer of a predetermined type, determining measurement results of at least one measurand of a medium of an application specific type, wherein each measurement situation is predetermined by specifying at least one influencing factor affecting measured spectra determined by the spectrometer(s) in the respective measurement situation, the method comprising:

• performing reference measurements by, with the at least one spectrometer, determining reference spectra of reference samples of the medium and, for each reference sample, determining and/or providing a reference value of each measurand of the reference sample;
• based on universal training data, including the reference spectra and the corresponding reference values, determining a universal model for determining predictions of each measurand based on measured spectra of the medium determined by spectrometers in the predetermined application;
• and
• for each measurement situation:
• in the respective measurement situation with the at least one spectrometer, determining and providing measured spectra of the medium;
• for at least one supplementary spectrum or a limited number of supplementary spectra, wherein each supplementary spectrum is given by one of the measured spectra determined by the spectrometer(s) in the respective measurement situation, determining and/or providing a supplementary value of each measurand of the medium;
• based on the universal model and supplementary training data including at least one or each supplementary spectrum and the corresponding supplementary value(s), determining a dedicated model for determining measurement results of each measurand based on measured spectra of the medium determined and provided by the spectrometer(s) employed in the respective measurement situation;
• and
• based on measured spectra of the medium determined and provided by the spectrometer(s) employed in the respective measurement situation and the dedicated model, determining and providing measurement results of each measurand of the medium.