Patent · US Active

Method and device for measuring NOx concentration using measurements of NOx and a second gas component

US8852950B2 · kind B2 · utility

4Cited by

57References

21Claims

0Family size

Assignee

Testo AG · DE

Inventors

Knut Hoyer · Villingen-Schwenningen, DE
Andreas Kaufmann · Hohenahr, DE
Reinhold Munch · Glückstadt, DE
Thomas Springmann · Kirchzarten, DE

Key dates

Filing date	Sep 3, 2008
Grant date	Oct 7, 2014
Priority date	—
Expiry date	Feb 23, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/207497
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining an NOx concentration in a measurement gas is provided, where a measurement value for the NOx concentration is determined from the sensor signal of a gas sensor and a measurement value for the concentration of a second component in the measurement gas is determined. A corrected value for the NOx in the measurement gas is determined from the measurement values, and the measurement value and the corrected measurement value for the NOx concentration are displayed and/or output.

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