Segmented field dielectrometer

US6486673B1 · kind B1 · utility

Assignee

• JENTEK Sensors, Inc. · US

Inventors

• Neil J. Goldfine · Newton, US
• Darrell E. Schlicker · Watertown, US
• Markus Zahn · Lexington, US
• Wayne D. Ryan · Pembroke, US
• Yanko K. Sheiretov · Waltham, US
• Andrew P. Washabaugh · Chula Vista, US

Key dates

• Filing date: Jan 20, 2000
• Grant date: Nov 26, 2002
• Expiry date: Jan 20, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V3/104
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A dielectrometer with a sensor face that carries an excitation electrode driven with a varying voltage. At least two sensing electrodes and a guard electrode are also carried by the sensor face. The sensing electrodes are adapted for single or multiple penetration depth measurements into a test material. The guard electrode surrounds the sensing electrodes and is at about the same voltage as the sensing electrodes.