Patent · US Active

Method for operating a solid electrolyte sensor element containing a pump cell

US10036721B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Goetz Reinhardt · Eppelheim, DE
Hartwig Lehle · Stuttgart, DE
Bernhard Ledermann · Weil der Stadt, DE

Key dates

Filing date	Sep 20, 2013
Grant date	Jul 31, 2018
Priority date	—
Expiry date	Nov 15, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/407
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method is described for operating a sensor element for detecting at least one concentration of a gas in a measuring gas chamber. The sensor element includes at least one pump cell having at least two pump electrodes connected to each other by at least one solid electrolyte. At least one measuring variable is detected in the method, and at least one compensating variable is determined. The compensating variable is at least partially dependent on capacitive effects on at least one junction between at least one of pump electrodes and the solid electrolyte. At least one corrected measuring variable is determined from the measuring variable and the compensating variable. The concentration of the gas in the measuring gas chamber is determined from the corrected measuring variable.

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