Differential dilution sampling probe

Details Differential dilution sampling probe Differential dilution sampling probe

1994-06-23

1995-12-12

Raevis, Robert

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

G01N 100

Patent

active

054739519

ABSTRACT:
A method and apparatus for sampling and dilution of a process gas stream. A probe is inserted into the stream, the probe being open at its front end, and a precisely regulated flow of a dilution gas is inputted at a mid-point of the probe. A precisely regulated, and greater flow of unfiltered gas is withdrawn from the rear end of the probe. The difference between the input flow and the withdrawn flow is process gas which is diluted by the dilution gas, and the ratio of process gas to withdrawn flow can be precisely regulated.

REFERENCES:
patent: 3407646 (1968-10-01), Traver
patent: 3892549 (1975-07-01), Lyshkow
patent: 3901672 (1975-08-01), Roberts
patent: 4856352 (1989-08-01), Daum et al.
patent: 4974453 (1990-12-01), Hohorst
patent: 5058440 (1991-10-01), Graze, Jr.
patent: 5109708 (1992-05-01), Lawless
patent: 5237881 (1993-08-01), Ross
patent: 5297432 (1994-03-01), Traina et al.

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