Method for monitoring concentration of water borne substance in an aqueous medium

US8932873B2 · kind B2 · utility

Assignee

• Endress+Hauser Conducta Gesellschaft fuer Mess- und Regeltechnik mbH + Co. KG · DE

Inventors

• Ulrich Kathe · Leonberg, DE
• Thomas Schipolowski · Stuttgart, DE
• Oliver Bettmann · Gerolzhofen, DE
• Björn Emling · Reinheim, DE

Key dates

• Filing date: Nov 30, 2007
• Grant date: Jan 13, 2015
• Expiry date: Aug 15, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/235
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for monitoring the concentration of water borne substances in an aqueous medium, by introducing a defined amount of the aqueous medium into a gas circulatory system of an analytical apparatus which extends through a high temperature reaction chamber and a measuring chamber. The introducing of the aqueous medium occurs upstream of the high temperature reaction chamber or into it. The aqueous medium is evaporated in the high temperature reaction chamber, the water borne substance with at least one reaction partner in the high temperature reaction chamber reacts to a gaseous reaction product, and a current value of a measured variable is registered, which is a function of the concentration of the chemical species of the reaction product in the gas circulatory system. The concentration of the chemical species of the reaction product in the gas circulatory system depends, on the one hand, on a time-dependent state of the gas circulatory system and, on the other hand, on the concentration of the substance in the aqueous medium; ascertaining the concentration of the substance in the aqueous medium by applying the current value of the measured variable, wherein, in the ascertainin…