Patent · US Active

Device and method for determining carbon dioxide content of air

US9523665B2 · kind B2 · utility

16Cited by

4References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Maximillian Fleischer · Grevesmühlen, DE
Roland Pohle · Füssen, DE
Stefan Stegmeier · Munich, DE
Oliver von Sicard · Munich, DE

Key dates

Filing date	May 29, 2012
Grant date	Dec 20, 2016
Priority date	—
Expiry date	Nov 28, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/4143
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas sensor, for example for use in air conditioning systems, has a gas-sensitive layer that includes a material that is sensitive to carbon dioxide. The material has a cross-sensitivity to air humidity. This is compensated for by measurement at two different temperatures. The measured gas values are calculated together, with the assumption that the sensitivity of the gas sensor to carbon dioxide exhibits a different curve with the temperature of the gas sensor than the sensitivity to water.

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