Optics: measuring and testing – Inspection of flaws or impurities – Bore inspection
Patent
1975-05-30
1977-07-05
Bauer, Edward S.
Optics: measuring and testing
Inspection of flaws or impurities
Bore inspection
250343, 356 51, 356189, G01N 2126
Patent
active
040336999
ABSTRACT:
An apparatus for monitoring the concentration of a vapor, such as heavy water, having at least one narrow bandwidth in its absorption spectrum, in a sample gas such as air. The air is drawn into a chamber in which the vapor content is measured by means of its radiation absorption spectrum. High sensitivity is obtained by modulating the wavelength at a relatively high frequency without changing its optical path, while high stability against zero drift is obtained by the low frequency interchange of the sample gas to be monitored and of a reference sample. The variable HDO background due to natural humidity is automatically corrected.
REFERENCES:
patent: 3784307 (1974-01-01), Jackson et al.
patent: 3860818 (1975-01-01), Stalder et al.
patent: 3861809 (1975-01-01), Hall, Jr.
patent: 3932040 (1976-01-01), Warncke
Wood, The Review of Scientific Instruments, vol. 29, No. 1, Jan. 1958, pp. 36-41.
Bayly John G.
Booth Ronald J.
Atomic Energy of Canada Limited
Bauer Edward S.
Evans F. L.
Rymek Edward
LandOfFree
Vapor concentration monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vapor concentration monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vapor concentration monitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-574296