G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 30/32 (2006.01)
Patent
CA 2572733
Disclosed are systems and methods that include a sampling device (20), a chromatographic column (24), and a transfer line (28) through which a fluid containing analyzes to be measured are communicated from the sampling device to the column. The pressure at which the fluid containing the analyzes is applied at the inlet of the transfer line is adjusted as the temperature of the column increases in accordance with certain relationships in order to maintain a substantially constant flow rate or velocity for the fluid exiting the column. In this way, the system compensates for changes in the viscosity of the fluid flowing through the column that result from changes in the column temperature.
Cette invention a pour objet des systèmes et des procédés incluant un dispositif d~échantillonnage (20), une colonne chromatographique (24), et une chaîne de transmission (28) par laquelle un liquide contenant des analyses à évaluer est communiqué depuis le dispositif d~échantillonnage vers la colonne. La pression d~application du liquide contenant les analyses, à l~entrée de la chaîne de transmission, est ajustée à mesure que la température de la colonne augmente en fonction d~un certain nombre de relations, afin de maintenir un taux ou une vitesse de circulation du fluide à la sortie de la colonne pratiquement constants. De cette manière, ce système compense les changements de viscosité du fluide en circulation dans la colonne, résultant des changements de température subis par la colonne.
Edwards Richard G.
Tipler Andrew
Hicks & Associates
Perkinelmer Las Inc.
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