Photoacoustic gas sensor utilizing diffusion

Details Photoacoustic gas sensor utilizing diffusion Photoacoustic gas sensor utilizing diffusion

2006-09-12

2006-09-12

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

C356S437000, C073S024020

Reexamination Certificate

active

07106445

ABSTRACT:
The present invention relates to a photoacoustic gas sensor utilizing diffusion having a sensing volume and an acoustic pressure sensor volume containing an acoustic pressure sensor such that the fluid connection between the sensing volume and the acoustic pressure sensor volume restricts the flow of analyte gas therethrough but does not restrict the transmission of the photoacoustic signal therethrough.

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