Patent · US Expired

Method and arrangement for detecting the oxygen content in a gas

US6200458A · kind A · utility

3Cited by

8References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter Brida · Lambach, DE
Theodor Graser · Stuttgart, DE
Gerhard Hoetzel · Stuttgart, DE

Key dates

Filing date	Dec 31, 1998
Grant date	Mar 13, 2001
Priority date	—
Expiry date	Dec 31, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/417
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention is directed to a method for detecting the oxygen content in a gas to be measured. At least one concentration cell operating in accordance with the Nernst principle is provided. The concentration cell includes a measuring electrode communicating with the gas and a solid electrolyte and a reference electrode connected to the measuring electrode through the solid electrolyte. A pump-current pulse is applied between the reference electrode and the measuring electrode and, directly after the end of each pump-current pulse, the current flow between the reference electrode and the measuring electrode is reversed in a pulse-like manner.

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