G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/35 (2006.01) G01N 21/39 (2006.01)
Patent
CA 2540395
A technique is disclosed for the detection of water vapor in a natural gas background. The system includes a light source (519) emitting light approximately within wavelength ranges such as 920- 960 nm, 1.877 - 1.901, or 2.711 - 2.786 . The light source emits light through a sample of natural gas that is detected by a detector (523). In one embodiment, the light source is a tunable diode laser and the moisture level is determined by harmonic spectroscopy. In other embodiments, a VCSEL, a color center laser, or a quantum cascade laser is utilized.
L'invention concerne une technique de détection de la vapeur d'eau dans un fond de gaz naturel. Ce système comporte une source de lumière émettant de la lumière approximativement dans des plages de longueurs d'onde comprises entre 920-960 nm, 1,877 1,901 µm ou 2,711-2,786 µm. La source de lumière émet de la lumière à travers un échantillon de gaz naturel détecté par un détecteur. Dans un mode de réalisation, la source de lumière est une diode laser accordable et le niveau d'humidité est déterminé par spectroscopie harmonique. Dans d'autres modes de réalisation, un VCSEL, un laser à centre coloré, ou un laser à cascade quantique est utilisé.
Smart & Biggar
Spectrasensors Inc.
LandOfFree
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