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US 9,310,346 B1Granted
Methods for rapid gas sampling with high horizontal spatial resolution in a manner suitable for subsequent constituent gas analysis
AssigneePicarro, Inc.
InventorsChris W. Rella, Pieter P. Tans
Life of this patent
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Abstract
A gas sample storage chamber is used to continuously acquire a gas sample. After the sample has been acquired, the stored gas in the chamber can be analyzed. This analysis can provide a time history of the gas sample, since mixing and diffusion of the gas sample in the chamber can be made sufficiently negligible. The gas flow rate for analysis differs significantly from the acquisition flow rate.
Claims14
A method of gas analysis, the method comprising:
- providing a mobile platform;
- providing a gas sample storage chamber disposed on the mobile platform and configured to have an acquisition mode where sample gas is acquired from at least two distinct locations as the mobile platform moves by continuously admitting ambient gas to the gas sample storage chamber at an acquisition flow rate;
- performing analysis of the sample gas by flowing the sample gas from the gas sample storage chamber to a gas analysis instrument in an analysis mode and at an analysis flow rate, wherein the acquisition flow rate and the analysis flow rate differ by 40% or more of the acquisition flow rate;
- wherein switching from the acquisition mode to the analysis mode is based on a trigger.
1 more element
Dependencies are inferred from the claim text.