Patent · US Expired

Nondispersion, two beam, infrared gas analyzer

US3970387A · kind A · utility

8Cited by

0References

4Claims

0Family size

Assignee

Hartmann & Braun Aktiengesellschaft · DE

Inventors

Reimar Faulhaber
Margareta Ascherfeld · Oberursel, DE
Walter Fabinski · Kriftel, DE

Key dates

Filing date	Feb 5, 1975
Grant date	Jul 20, 1976
Priority date	—
Expiry date	Feb 5, 1995

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/37
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The two beam analyzer has chambers traversed by infrared beams and passed through by test gas; the intensity of each beam is detected by a detector having chambers which are filled with gas of the same type as the gas to be detected (as a trace) in the test gas. Additionally, one beam path includes a selectivity cuvette or cell, filled exclusively with that type of gas, but at a rather low pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.