Patent · US Expired

Device for monitoring the concentration of gaseous constituents in mixtures of gases

US5352353A · kind A · utility

7Cited by

1References

13Claims

0Family size

Assignees

Roth-Technik GmbH & Co. · DE
Forschung fur Automobil- und Umelttechnik · DE

Inventors

Ulrich Schonauer · Karlsruhe, DE
Edelbert Hafele · Karlsruhe, DE

Key dates

Filing date	Dec 23, 1993
Grant date	Oct 4, 1994
Priority date	—
Expiry date	Dec 23, 2013

Classification

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

Abstract

The invention concerns a device for continuously monitoring the level of at least one gaseous constituent in a mixture of gases. The drawbacks of the known devices are complexity, high power consumption, large size, and, due to their high mass, non-uniform distribution of temperature, entailing imprecise measurement, and inertia, especially at the commencement of operation. These drawbacks are eliminated with a base in the form of a water with at least two electrodes in the form of separated thin coatings and with a temperature sensor separated from the electrodes on one side and with a heater in the form of an electric-resistance heating coating on the other side.

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