System and method for measuring water vapor in natural gas

Details System and method for measuring water vapor in natural gas System and method for measuring water vapor in natural gas

2007-11-27

2008-09-02

Porta, David P. (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

07420172

ABSTRACT:
The amount of water vapor in natural gas at different levels, including at levels below 10 ppmv, is measured by directing a light from a quantum cascade laser at a frequency in the 5.01 to 5.03 micron or the 5.07 to 50.9 micron wavelength range through natural gas containing water vapor. A detector is configured to detect the intensity of light transmitted through the natural gas from the laser; and an analyzer is coupled to the detector for determining the level of water vapor in the natural gas.

REFERENCES:
patent: 6657198 (2003-12-01), May
patent: 7132661 (2006-11-01), May
patent: 2006/0123884 (2006-06-01), Selker et al.
patent: 2007/0058686 (2007-03-01), Capasso et al.

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