Isotopic gas analyzer

US7063667B1 · kind B1 · utility

Assignee

• Oridion Breathid Ltd · IL

Inventors

• Ilan Ben-Oren · Jerusalem, IL
• Lewis Colman · Jerusalem, IL
• Ephraim Carlebach · Raanana, IL
• Boaz Giron · Jerusalem, IL
• Gershon Levitsky · Jerusalem, IL

Key dates

• Filing date: Sep 17, 1998
• Grant date: Jun 20, 2006
• Expiry date: Sep 17, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0631
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An NDIR spectrometer based on the use of wavelength specific lamp sources, whose emission spectrum consists of discrete, narrow lines characteristic of the isotope present in the lamp, and which it is desired to measure with the spectrometer. This allows very high intrinsic sensitivity, enabling the use of an extremely compact absorption cell with a very short path length. In addition, the source can be self-modulated, such that problems associated with external choppers are avoided. Furthermore, there is insignificant cross sensitivity between the isotopes themselves and between the isotopes and other ambient gases in the operating environment.