US 11,719,679 B2
Gas exchange transient buffering systems and methods
Mark A. Johnson, Lincoln, NE (US); Robert D. Eckles, Lincoln, NE (US); Douglas J. Lynch, Lincoln, NE (US); Johnathan I. E. McCoy, Lincoln, NE (US); and Jason Hupp, Lincoln, NE (US)
Assigned to LI-COR, INC., Lincoln, NE (US)
Filed by Li-Cor, Inc., Lincoln, NE (US)
Filed on Mar. 11, 2021, as Appl. No. 17/198,879.
Claims priority of provisional application 62/992,618, filed on Mar. 20, 2020.
Prior Publication US 2021/0293768 A1, Sep. 23, 2021
Int. Cl. G01N 33/00 (2006.01)
CPC G01N 33/0098 (2013.01) 22 Claims
OG exemplary drawing
 
1. A gas exchange analysis system, the system comprising:
a first water vapor sensor configured to receive a flow of a gas from a first gas flow line and configured to measure a first concentration of water vapor in the gas received from the first gas flow line;
a sample chamber configured to hold a sample capable of adding or removing water from the gas and configured to receive the gas exiting the first water vapor sensor or receive the flow of the gas from the first gas flow line;
a second water vapor sensor configured to measure a second concentration of water vapor in the gas exiting the sample chamber; and
a component in the first gas flow line before the first water vapor sensor and before the sample chamber, the component including an amount of a material, wherein the material absorbs water in the presence of a positive water concentration gradient and desorbs water in the presence of a negative water concentration gradient to thereby control a rate of fluctuations in water vapor content propagated in the flow of the gas to the first water vapor sensor and to the sample chamber from the component in the gas exchange system.