Arrangement adapted for spectral analysis of high concentrations of gas

A device adapted for spectral analysis of high concentrations of gas, the device comprising:

• a light emitting means configured to generate electromagnetic radiation;
• a gas-adapted measuring cell defining an optical measuring distance;
• a detector configured to detect the electromagnetic radiation passing through the optical measuring distance from the light emitting means;
• and
• an analysis unit configured to perform the spectral analysis and being connected at least to the detector,
• wherein the detector is opto-electrically sensitive to the electromagnetic radiation, the electromagnetic radiation falling within a spectral area whose chosen wavelength components are passed through an optical filter to become objects of an analysis in the analysis unit performing the spectral analysis for determining the intensity of radiation of the wavelength components,
• wherein a length of the optical measuring distance between the light emitting means and the detector is less than 15 millimeters, and that a plate having an aperture is arranged between the light emitting means and the detector such that electromagnetic radiation from the light source directly impinges the detector.