Patent ID: 6341890
Filing Date: 2002-01-29
Classification: G01J

Abstract:
A sensor comprising:photodetector-forming means and a calculation means which determine at least one of either a temperature or a concentration as a function of simultaneous measurements of a radiation performed by the photodetector-forming means, wherein said photodetector-forming means are juxtaposed inside a case in which there are also disposed a fixed dispersion means for receiving the radiation and for dispersing the radiation as a function of wavelength over the photodetector-forming means, the case also having an optical head enabling the radiation emitted by one of either a gas or a gaseous free radical to be conveyed to the fixed dispersion means, a combination of the fixed dispersion means and of the photodetector-forming means making it possible to obtain wavelength resolution of less than 0.1%, and wherein the photodetector-forming means comprises at least three photodetectors.