Patent · US Expired

Flow gap gas distribution adapter for an electrochemical gas sensor

US6793786B2 · kind B2 · utility

0Cited by

13References

15Claims

0Family size

Assignee

Drägerwerk Aktiengesellschaft · DE

Inventors

Herbert Kiesele · Lübeck, DE
Uwe Kuhn · Riederich, DE
Rainer Kunz · Wulfen, DE
Frank Mett · Lübeck, DE

Key dates

Filing date	Mar 28, 2002
Grant date	Sep 21, 2004
Priority date	—
Expiry date	May 7, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/0009
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An adapter (1) and electrochemical gas sensor (2) is provided with an electrochemical gas sensor housing (14) accommodating an electrolyte (13), with at least one measuring electrode (12) arranged therein and with a membrane (11), which screens the measuring electrode (12) from a measured gas and is permeable to the measured gas.The measuring sensitivity of an electrochemical gas sensor is increased by the adapter (1) having a gas-impermeable surface (15) extending in parallel to and at a spaced location from the membrane (11). The adapter (1) and the membrane (11) form a flow gap (10) for the measured gas delivered by a pump. The adapter (1) may be plugged onto the electrochemical sensor (2) at its outer edge (1a). The measured gas enters through a central opening (17), expands in the flow gap (10) radially to the outside and leaves same via the ring-shaped gap (16).

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