Analyzing gases by testing the optical characteristics of exhaus

Details Analyzing gases by testing the optical characteristics of exhaus Analyzing gases by testing the optical characteristics of exhaus

1975-08-27

1976-06-15

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356208, G01N 2126

Patent

active

039639398

ABSTRACT:
To test optical transmissivity of exhaust gases from internal combustion engines without requiring cleaning of confining walls of pipes or tubes, a film of liquid is caused to adhere to the inner surface of a transparent tube or pipe section by rotating the tube or pipe section so that the film will remain at the inner wall due to centrifugal force; light is transmitted transversely of the pipe section and through the exhaust gas. The liquid is preferably continually renewed by applying fresh liquid to the inside of the rotating pipe section, excess liquid being removed from an overflow ridge.

REFERENCES:
patent: 3207026 (1965-09-01), Churchill et al.
patent: 3268734 (1966-08-01), Bjorn
patent: 3700330 (1972-10-01), Davis
patent: 3790289 (1974-02-01), Schmidt et al.
patent: 3826918 (1974-07-01), Van der Koogh et al.

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