ABSORPTION MEASURER, SUCH AS A COLORIMETER IN PARTICULAR, FOR MEASURING ABSORPTION IN THE VISIBLE, INFRARED, OR MOREOVER ULTRAVIOLET SPECTRUM, FOR ANALYZING TRANSMITTING FLUID

摘要

The invention relates to an absorption measurer (1) for measuring absorption in the visible and/or infrared and/or ultraviolet spectrum for analyzing a transmitting fluid (2), including: a measuring cell (3) for the fluid, at least one electromagnetic radiation source (4) arranged to emit a radiation beam across the measuring cell, and a so-called transmission sensor (5) for measuring the intensity of the radiation transmitted by the fluid. According to the invention, the absorption measurer includes: at least two channels from the same number of electromagnetic radiation sources, a light integrator enabling the mixture of radiations from different channels, a source modulator using a synchronous detection and multiplexing technique, as well as a means for measuring the incident intensity and the diffuse intensity in addition to the transmitted intensity. The invention also relates to a method for spectrum measurement, particularly as used in the absorption measurer consistent with the invention.