Patent · US Expired

Method for the selective detection of gasses and gas sensor for carrying out this method

US6353225B1 · kind B1 · utility

23Cited by

15References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Rainer Strzoda · Hersbruck, DE
Erhard Magori · Straubing, DE
Maximilian Fleischer · Ehrenkirchen, DE
Hans Meixner · Haar, DE

Key dates

Filing date	Apr 23, 1998
Grant date	Mar 5, 2002
Priority date	—
Expiry date	Apr 23, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/39
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method an apparatus uses the narrow-band measurement of the absorption of given spectral lines of a gas using laser light sources, so that the spectrally resolved measurement of individual absorption lines, and thus the selection of an individual gas component, is possible. A laser diode which is operated at a higher temperature is correspondingly varied over a certain temperature region, wherein the selected spectral line is crossed. On the basis of absorption measurements, the method and sensor deliver the gas concentration, with a high selectivity.

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