DEVICE FOR MEASURING CONCENTRATION OF DUST IN GAS Russian patent published in 2006 - IPC G01N15/06 G01N21/94 

FIELD: analyzing or investigating materials.

SUBSTANCE: device comprises illuminator made of light source and collimator optically connected with light catcher through the windows of the aspiration channel, lens for receiving diffuse light from the gas to be analyzed that are optically connected with the first photodetector, light guide with a built-in controller of the radiation flux connected with the second photodetector that is connected with the first photodetector, system for processing signals from the photodetectors, and device for displaying information. The light catcher is provided with the spherical counter-mirror mounted coaxially to the illuminator. The focal length of the counter-mirror is half of the distance between it and exit of the collimator. The mirror surface of the receiving lens mounted coaxially to the illuminator is made of a collar on the surface of round barrel cut by two planes perpendicular to the axis of the barrel and shifted with respect to the middle cross-section of the barrel.

EFFECT: expanded functional capabilities.

1 dwg