Patent · US Active

Augmented Raman analysis using absolute Raman

US11874230B2 · kind B2 · utility

0Cited by

4References

6Claims

0Family size

Assignee

Endress+Hauser Optical Analysis, Inc. · US

Inventors

Joseph B. Slater · Dexter, US
Marc Winter · Gelnhausen, DE
Oliver Link · Bad Salzuflen, DE

Key dates

Filing date	Jun 9, 2022
Grant date	Jan 16, 2024
Priority date	—
Expiry date	Jun 9, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/0027
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining an amount of a Raman-invisible gas in a multi-component gas stream includes performing a first and second absolute Raman analysis on the gas stream. A decrease in the absolute Raman bands from the first analysis to the second analysis is attributed to an increase of the Raman-invisible gas in the gas stream. The amount of the Raman-invisible gas is calculated from the difference between the first and second sets of Raman bands. The calculation of the Raman-invisible gas is verified via a measurement and a calculation of a secondary property of the gas stream such as the thermal conductivity of the gas stream or the density of the gas stream.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.