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Total Exhaust Flow Smoke Meter for continuous measurement of smoke intensity in the exhaust of diesel engines

Equipment

The total exhaust flow smoke meter is used for continuous measurement of smoke intensity in the exhaust of diesel engines. The image describes the functioning of the meter as the following: The instrument functions on the principle of light obstruction. A source of light is provided and a light beam crosses the exhaust flow of the engine. Depending on the concentration of smoke in the exhaust, a certain amount of light is absorbed. The light that passes through falls on a photo sensitive element. After amplification this is displayed on an indicating equipment. Hence, a continuous evaluation of the smoke density in the exhaust is possible with this type of instrument. 

Collection:
Central Photographic Section Collection
Photograph ID:
001/0040/IMG_1183_1
Album ID:
Date:
January 1976

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