Smoke meter

Details Smoke meter Smoke meter

1992-07-01

1994-10-11

Williams, Hezron E.

Measuring and testing

Gas analysis

Solid content of gas

73 16, 356439, G01N 2159

Patent

active

053536290

ABSTRACT:
A smoke meter is particularly adapted to meter the smoke content of vehicle exhaust gases. The meter includes a measuring tube with a light at one end and a light detector at the other end, the amount of light detected corresponding to the smoke content. The optical surfaces are kept clean by inducing a flow of clean air across the surfaces using an air supply which also induces flow of gas into the measuring tube.

REFERENCES:
patent: 1967428 (1934-07-01), Quereau
patent: 1969626 (1934-08-01), Simon et al.
patent: 3826577 (1974-07-01), Irwin
patent: 4544273 (1985-10-01), Berndt

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