FIELD: testing equipment. SUBSTANCE: method of automatic monitoring of total content of dust in exhaust gases includes registration of intensity Ip of infrared radiation passed through monitored volume within range of wave lengths 7.6-8.4 μ, registration of intensity If of infrared radiation scattered forward in same range of wave lengths. Content of dust is assessed by value of ratio of intensities Ip/If. EFFECT: enhanced authenticity of method. 6 dwg
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