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1. (WO2018162398) ATR SPECTROMETER AND METHOD FOR ANALYSING THE CHEMICAL COMPOSITION OF A SAMPLE

Pub. No.:    WO/2018/162398    International Application No.:    PCT/EP2018/055319
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Tue Mar 06 00:59:59 CET 2018
IPC: G01N 21/27
G01J 3/28
G01N 21/552
G01J 3/36
G01N 21/3563
G01N 21/3577
Applicants: PYREOS LTD.
Inventors: LAIRD, Ron
WALLACE, Andrew
MURRAY, Jeremy
VARGAS LLANAS, Hugo
Title: ATR SPECTROMETER AND METHOD FOR ANALYSING THE CHEMICAL COMPOSITION OF A SAMPLE
Abstract:
The invention relates to an ATR spectrometer for analysing the chemical composition of a sample, wherein the ATR spectrometer (1) comprises an ATR crystal (2), at least one infrared light source (5) being arranged on the entry surface (3), a line array (6) of infrared light detectors, at least one single infrared light detector (7), wherein the at least one infrared light source (5) is adapted to emit infrared light that enters the ATR crystal and is guided to the infrared light detectors under total internal reflection and under interaction with the sample being arranged immediately adjacent to the ATR crystal, a wavelength dispersive element (8) being arranged in the path of the infrared light so- that the line array is adapted to measure a spectrum of the infrared light, and a wavelength filter (9) being arranged in the path of the infrared light to the single infrared light detector, wherein at least one of the infrared light detectors is chosen to be a chosen infrared light detector for a signal correction, and the ATR spectrometer is adapted to use the electrical signal of the chosen infrared light detectors to correct the electrical signals of all the other infrared light detectors.