Method of determining dew point and a suitable device

Details Method of determining dew point and a suitable device Method of determining dew point and a suitable device

G - Physics

01

N

G01N 25/66 (2006.01) G01N 21/59 (2006.01) G01N 25/68 (2006.01)

Patent

CA 2231526

The proposed method of determining dew point involves directing the gas under investigation onto a cooled section of an optically transparent body through which a luminous flux is allowed to pass and recording fluctuations in the intensity of the luminous flux, the flow-rate of the gas thus directed onto the cooled section being reduced down to zero while its molecular diffusion is preserved. To limit the flow-rate of the gas impinging on the cooled section (1) and reduce contamination of the optically transparent element, the dew point gauge is provided with a sampling tube (10).

Cette invention concerne un procédé de mesure du point de rosée, lequel procédé consiste à introduire un gaz à étudier dans la section refroidie d'un corps optique transparent à travers lequel on émet un flux lumineux, puis à enregistrer les modifications de l'intensité du flux lumineux. La vitesse d'introduction du gaz à étudier dans la section refroidie du corps optique transparent est réduite à zéro tout en conservant la même diffusion moléculaire. Afin de réduire la vitesse d'introduction du gaz dans la section refroidie (1) et de réduire l'encrassement du corps optique transparent, l'unité de mesure du point de rosée est pourvue d'un tube d'échantillonnage (10).

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