Sampling device for gas analyzers

Details Sampling device for gas analyzers Sampling device for gas analyzers

1996-12-20

2000-05-09

Larkin, Daniel S.

Measuring and testing

Sampler, sample handling, etc.

With heating or cooling

7386358, 7386343, 7386351, 7386381, 7386383, 7386481, G01N 124

Patent

active

06058789&

ABSTRACT:
A sampling device for a gas analyzer in which a constant-rate flow of diluted sample gas is sampled by a constant-volume sampling device. A gas inlet port of a sampling passage of the constant-volume sampling device is positioned in a throat portion of a main venturi tube, or slightly upstream or downstream of the throat portion. A cold trap is provided downstream of the sampling passage to collect and supply a portion of the sampled gas to be analyzed. A capillary is provided upstream of the cold trap so that a flow rate can be set by the differential upstream and downstream pressures. The velocity of the diluted sample gas in the throat portion of the main venturi tube is approximately Mach one, so that the sampling thereof is unaffected by pressure or flow-rate changes elsewhere in the system.

REFERENCES:
patent: 3593023 (1971-07-01), Dodson et al.
patent: 3699814 (1972-10-01), Kaufman
patent: 3784902 (1974-01-01), Huber
patent: 3822581 (1974-07-01), Hauck et al.
patent: 3996008 (1976-12-01), Fine et al.
patent: 4383839 (1983-05-01), Sisti et al.
patent: 4660408 (1987-04-01), Lewis
patent: 4766760 (1988-08-01), Poshemansky et al.
patent: 4863871 (1989-09-01), Munari et al.
patent: 5014541 (1991-05-01), Sides et al.
patent: 5184501 (1993-02-01), Lewis et al.
patent: 5337595 (1994-08-01), Lewis

Affiliated with

Also associated with

Rating

Sampling device for gas analyzers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sampling device for gas analyzers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sampling device for gas analyzers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1054079