Method and device for monitoring and controlling a process

US6874356B2 · kind B2 · utility

Assignee

• ABB AB · SE

Inventors

• Anna Kornfeldt · Västerås, SE
• Thomas Liljenberg · Hagfors, SE
• Stefan Backa · Visby, SE
• Claudio Pecorari · Arlöv, SE
• Eva Lundberg · Arlöv, SE

Key dates

• Filing date: Nov 10, 2003
• Grant date: Apr 5, 2005
• Expiry date: Nov 10, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/02818
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and device for monitoring and controlling a pharmaceutical, chemical or food process, in which the biological activity and/or the bio-mass of micro-organisms in the process is monitored, and in which the state of the process is detected by monitoring viscosity and/or aggregate size and/or content of a dispersion of proteins, crystalline particles or fat droplets that are processed, respectively. The micro-organisms and/or bio-molecules produced in the process, and the proteins, crystals particles or fat droplets being processed are monitored by means of acoustic spectroscopy.