Patent · US Active

Gas sensor

US7636153B2 · kind B2 · utility

2Cited by

4References

22Claims

0Family size

Assignee

IR Microsystems SA · CH

Inventors

Bert Willing · Blonay, CH
Markus Kohli · Grandson, CH
Andreas Seifert · Aalen, DE

Key dates

Filing date	Aug 17, 2007
Grant date	Dec 22, 2009
Priority date	—
Expiry date	Feb 26, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/399
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A combined gas sensor device allowing the measuring of the concentration of a gas by tunable diode laser spectrometry as well as by resonant photo-acoustics within one housing. A laser beam used for laser spectrometry is sent across the openings of a measuring cell usually used for resonant photo-acoustic determination. Thus, both measuring principles use the same gas sensing module with a minimum of space consumption, so that the device can be produced with minimum dimensions. Further, a common opto-electronics and electronics platform can be used which reduces the overall costs of such a combined gas sensor.

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