METHOD FOR CORRECTING A SIGNAL DELIVERED BY A MEASURING INSTRUMENT

A method for correcting a signal delivered by a slave measuring instrument with respect to a reference signal delivered by a master measuring instrument of the same type involved in the analyzing of the same product includes the provision of standardization signals delivered by both the slave instrument and the master instrument as they analyze calibration products, each calibration product having a particular known calibration characteristic. These standardization signals are subjected to series decomposition so that they are simplified prior to their being formed into a correction coefficient matrix useful in correcting a signal derived from a slave measuring instrument performing an actual analysis of the characteristic of a test product like the calibration products. When a test product undergoes analysis, it is analyzed by the slave measuring instrument to determine a signal which is then subject to a further series decomposition and correction with the aid of the stored correction matrix. Once corrected, the signal is subject to recomposing and a final determination of the characteristic of concern using a calibration model established relative to the master measuring instrument and the known characteristics of calibration products.