Patent · US Expired

Gas sensor consisting of surface wave components

US5817922A · kind A · utility

8Cited by

6References

4Claims

0Family size

Assignee

Forschungszentrum Karlsruhe GmbH · DE

Inventors

Michael Rapp · Seeheim-Jugenheim, DE
Achim Voigt · Blankenloch, DE

Key dates

Filing date	Nov 15, 1996
Grant date	Oct 6, 1998
Priority date	—
Expiry date	Nov 15, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/106
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a gas sensor comprising a housing and having driver and amplifier circuits the housing has a bottom part with at least four cavities arranged in radial symmetry around a central gas admission space from which gas admission passages of the same shape and size extend radially outwardly to the various cavities for supplying gas to be measured to surface wave components of which one is disposed in each of the cavities and the cavities have discharge passages extending outwardly and having all the same gas flow resistance for the discharge of the gases from the housing cavities.

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