Patent · US Expired

Electrochemical sensor

US6270639A · kind A · utility

5Cited by

9References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin Lenfers · Aidlingen, DE
Olaf Jach · Eppelheim, DE
Harald Neumann · Lambach, DE
Walter Strassner · Schorndorf, DE
Johann Riegel · Bietigheim-Bissingen, DE
Lothar Diehl · Stuttgart, DE

Key dates

Filing date	Jan 29, 1999
Grant date	Aug 7, 2001
Priority date	—
Expiry date	Jan 29, 2019

Classification

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

Abstract

An electrochemical sensor determining a gas concentration of the measuring gas. The sensor has an electrochemical element including a first solid electrolyte body having an electrochemical pump cell and a first (external pump) and a second (internal pump) electrode and having a gas chamber which is connected to the measuring gas chamber via a gas supply opening and in which the second electrode is arranged. The electrochemical element also includes a second solid electrolyte body having an electrochemical sensor cell (e.g., a Nernst cell) and a third and fourth electrode, each electrode having a lead for the electrical contacting. The leads of the first and second electrodes are decoupled capacitively from the lead of at least the fourth electrode by a device.

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