Patent · US Expired

Method for measuring the concentration of a dissolved gas in a fluid

US6192737A · kind A · utility

16Cited by

5References

8Claims

0Family size

Assignees

Rosemount Analytical Inc. · US
GKSS-Forschungszentrum Geesthacht GmbH · DE

Inventors

Klaus Ohlrogge · Geesthacht, DE
Carsten Hasler · Hamburg, DE
Jan Wind · Barsbüttel, DE
Dieter Cegla · Seevetal, DE
Franz Josef Steffens · Bayrischzell, DE

Key dates

Filing date	Nov 20, 1998
Grant date	Feb 27, 2001
Priority date	—
Expiry date	Nov 20, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/14
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention pertains to a method for measuring the concentration of dissolved gases in a liquid [(39)], especially of CO.sub.2 in beverages, in which the liquid [(39)] is passed across the retentate side [(140)] of a membrane [(14)] that is at least partially permeable to the dissolved gas, and [in which] the volumetric flow of the permeated gas on permeate side [(16)] of the membrane [(14)] is determined, the temperature of the liquid [(39)] is measured, and the concentration of the dissolved gas in the liquid [(39)] is calculated from these values. In this, the thickness of the membrane [(14)] can be pre-selected as a function of the flow rate of the liquid [(39)] flowing along the retentate side [(140)].

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