High frequency contactless heating with temperature and/or conductivity monitoring

US6859050B2 · kind B2 · utility

Assignee

• AGILENT TECHNOLOGIES, INC. · US

Inventors

• Tom A van de Goor · Foster City, US
• Klaus Witt · Keltern, DE
• Bohuslav Gas · Jílové u Prahy, CZ
• Jiri Zuska · Praha, CZ

Key dates

• Filing date: May 31, 2002
• Grant date: Feb 22, 2005
• Expiry date: May 31, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B6/60
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Devices and methods for contactless heating of a fluid in a chamber using a high frequency alternating potential are described. At least two electrodes are coupled to the chamber such that the alternating potential is coupled to the fluid inside the chamber and heats the fluid. A control loop derives a signal from the alternating potential and uses the signal to control the alternating potential. The devices and methods described determine temperature and/or conductivity of the fluid using the signal.