Optics: measuring and testing – Standard
Patent
1996-12-20
1998-06-09
Pham, Hoa Q.
Optics: measuring and testing
Standard
356435, 356437, 250343, G01J 102, G01N 2100
Patent
active
057643547
ABSTRACT:
In a two-beam gas analyzer, a measurement beam passes through a measurement cuvette filled with a measurement gas, and a comparison beam passes through a comparison cuvette filled with a comparison gas. Using a detector arrangement, a difference signal is generated from the beams exiting from the two cuvettes resulting in a measurement value which corresponds to the measurement gas concentration when weighted with a weighting factor. To allow recalibration after a calibration of the two-beam gas analyzer with calibration gas and adjustment of the weighting factor to a value which results in the appropriate calibration value as the measurement value, without having to fill the measurement cuvette with a calibration gas, an additional factor is determined when the measurement cuvette is not filled or is filled with inert gas. Thus, the difference signal corresponds to the calibration value when weighted with the weighting factor and the additional factor. During subsequent calibration processes, a zero point deviation of the difference signal is determined when the measurement cuvette is not filled or is filled with inert gas, and the weighting factor is corrected when the comparison beam is also interrupted in such a way that the difference signal corresponds to the calibration value when weighted with the corrected weighting factor and the additional factor.
REFERENCES:
patent: 3072787 (1963-01-01), Moyat
patent: 3560736 (1971-02-01), Billetdeaux
patent: 4101221 (1978-07-01), Schunck et al.
patent: 4682031 (1987-07-01), Fabinski et al.
patent: 4694174 (1987-09-01), Erath
patent: 4794255 (1988-12-01), Miyatake et al.
patent: 5468962 (1995-11-01), Ohishi et al.
Staab, J., Industrielle Gasanalyse (Industrial gas analysis), Oct. 1993, Technisches Messen 60 (1993) 11, pp. 444-449.
Staab, J., Industrielle Gasanalyse (Industrial gas analysis), Jul. 8, 1993 Technisches Messen 60 (1993) 10, pp. 398-401.
Staab, J., Industrielle Gasanalyse (Industrial gas analysis), Jul. 8, 1991, Technisches Messen 58 (1991) 11, pp. 452-457.
Staab, J., Industrielle Gasanalyse (Industrial gas analysis), Nov. 1991, Technisches Messen 58 (1991) 12, PP. 490-494.
Aidam Eckhard
Weinel Johann
Pham Hoa Q.
Siemens Aktiengesellschaft
LandOfFree
Two-beam gas analyzer and method for calibrating a two-beam gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-beam gas analyzer and method for calibrating a two-beam gas , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-beam gas analyzer and method for calibrating a two-beam gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2207084