Patent · US Active

Measurement device and method for analyzing a sample gas by infrared absorption spectroscopy

US9541497B2 · kind B2 · utility

6Cited by

12References

16Claims

0Family size

Assignee

HUMEDICS GMBH · DE

Inventors

Karsten Heyne · Isny im Allgäu, DE
Tom Rubin · Berlin, DE

Key dates

Filing date	Dec 21, 2010
Grant date	Jan 10, 2017
Priority date	—
Expiry date	Apr 2, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01N2800/085
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A measurement device and a method for analyzing a sample gas by infrared absorption spectroscopy are described. The measurement device comprises a narrowband laser having a line width of less than 0.2 cm−1 and being smaller than a width of an infrared absorption line to be measured of a sample gas. The measurement device is suited and can be arranged to measure the respiratory gas of a human or animal as sample gas, wherein the respiratory gas exchanges in the measurement chamber only by the respiration of the human or animal, and the respiratory resistance of the measurement device is less than 60 mbar.

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