Method for measuring temperature, molecular number density, and/or pressure of a gaseous compound from a thermal device, and a thermal system

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United States of America Patent

PATENT NO 9857345
SERIAL NO

14554902

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Abstract

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A method for measuring, from a thermal device, temperature, molecular number density, and/or pressure of a gaseous compound as function of distance, the gaseous compound absorbing at least some light. The method comprises generating, for a first wavelength band and a second wavelength band, a pulse sequence comprising a light pulse or light pulses, guiding the pulse sequence into the thermal device, and measuring, as function of time, the intensity of the scattered light at the first wavelength band and at the second wavelength band. The method further comprises determining information indicative of the differential absorption between the two wavelengths bands using measured intensities and determining the temperature, the molecular number density, and/or the pressure of the gaseous compound using the information indicative of the differential absorption between the two wavelengths bands. A thermal system arranged to carry out the method.

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Patent Owner(s)

Patent OwnerAddress
VALMET TECHNOLOGIES OYESPOO FINLAND ESPOO SOUTHERN FINLAND

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aalto, Antti Tampere, FI 6 49
Roppo, Juha Lempäälä, FI 4 18
Sarén, Matti Kajaani, FI 3 25
Toivonen, Juha Tampere, FI 6 36

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