Optical absorption analyzer

Details Optical absorption analyzer Optical absorption analyzer

1982-04-23

1985-06-25

Evans, F. L.

Optics: measuring and testing

For light transmission or absorption

By comparison

250565, 356437, G01N 2161

Patent

active

045250693

ABSTRACT:
An optical absorption analyzer for determining the concentration of low concentration components of a sample gas. Inexpensive voltage to frequency converters, up/down counters, and integrators are used to obtain a high accuracy determination which is independent of fluctuations in the strength of the light source used in the analyzer.

REFERENCES:
patent: 4055768 (1977-10-01), Bromberg
patent: 4320970 (1982-03-01), Dowben et al.

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