Optical gas densitometer

Details Optical gas densitometer Optical gas densitometer

1985-04-26

1987-03-17

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356439, 356440, G01N 2161

Patent

active

046510044

ABSTRACT:
An optical gas densitometer is provided comprising a conical filter portion having a front and rear end disposed to the inside of a cell portion and formed into a conical shape, which has a reflection mirror disposed to the inside of the front end thereof, windows disposed at the rear end thereof and in which the angle between an incident optical beam and an exiting optical beam is predetermined. Plate means at the front end of the filter and formed in a space between the inside of the cell portion and the outside of the conical filter portion, divides the space into a gas feed channel below the plate means and a gas exhaust channel above the plate means. An opening channel is disposed between the gas feed channel and the gas exhaust channel towards the rear end of the filter. A partition plate connected to the plate means at the front end of the filter, divides a gas sampling tube into first and second channels which correspond to the feed channel and exhausting channel, respectively.

REFERENCES:
patent: 3497303 (1970-02-01), Enemark et al.
patent: 3796887 (1974-03-01), Vincent et al.
patent: 4420687 (1983-12-01), Martinez et al.
patent: 4549080 (1985-10-01), Baskins et al.
patent: 4560873 (1985-12-01), McGowan et al.
G. Kivenson, "Some Considerations in the Design of Double-Beam Analyzers for Industrial Control" Journal of the Optical Society of America vol. 40, No. 2, (Feb. 1950), pp. 112-118.
"The Energy Expert", Lear Siegler Inc., Environmental Technology Division (Apr. 1982).
Model 3100M Microprocessor Based in situ CO Monitoring System, Dynatron Inc. (May 1982).
Stack Gas and Process Analyzer, Lear Siegler, Inc., Environmental Technology Division (Jan. 1981).

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