Infrared gas analyzer using count quadrature sampling

Details Infrared gas analyzer using count quadrature sampling Infrared gas analyzer using count quadrature sampling

1983-11-07

1986-04-29

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

250343, 250565, H03K 1300

Patent

active

045860262

ABSTRACT:
The percentage gas concentration within a sample as measured in a conventional optical bench is derived from the composite signal of the reference beam and sample beam transmitted through a sample cell in the optical bench. The primary source, which generates the reference beam and the secondary source which generates the sample beam are driven ninety degrees out of phase. The composite signal derived from the detector in the optical bench is digitized and then integrated according to the quadrature of the primary component of the composite signal derived from the reference beam, and is also integrated according to the quadrature of the secondary component of the composite signal derived from the sample beam. What is obtained is the integral of the absolute value of the secondary component and the integral of the absolute value of the primary component of the composite signal over one cycle of the reference beam and sample beam. The ratio of these component signals is computed to obtain a signal which is related to the percentage concentration of reference gas contained within the sample.

REFERENCES:
patent: 3745349 (1973-07-01), Liston
patent: 4027972 (1977-06-01), Davies
patent: 4061918 (1977-12-01), Preier et al.
patent: 4079256 (1978-03-01), Ford et al.
patent: 4390785 (1983-06-01), Faulhaber et al.
patent: 4420742 (1983-12-01), Tadauchi et al.
patent: 4441096 (1984-04-01), Evanchuk
patent: 4445111 (1984-04-01), Suift et al.
patent: 4496937 (1985-01-01), Kitagawa et al.

Affiliated with

Also associated with

Rating

Infrared gas analyzer using count quadrature sampling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared gas analyzer using count quadrature sampling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared gas analyzer using count quadrature sampling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-143460