Measuring small quantities of fluid

Details Measuring small quantities of fluid Measuring small quantities of fluid

G - Physics

01

N

G01N 1/14 (2006.01)

Patent

CA 2609278

The invention relates to a method and an apparatus for handling small quantities of fluids useful, for example, in measuring the gas and/or liquid sorption and desorption properties of substances such as hydrogen sorption by solid or liquid hydrogen storage materials. In one embodiment, low-volume rotary valves(310 B) are used to dose samples in a sample holder (15). In another embodiment, a rotary valve(310 B) is used as a dosing/bypass valve to both condition and measure samples. The invention also relates to an actuator for a rotary valve that has a manual override feature.

L'invention concerne un procédé et un dispositif de manipulation de petites quantités de fluides servant par exemple à la mesure des propriétés de sorption et de désorption de gaz et/ou de liquides de substances, par exemple des propriétés de sorption d'hydrogène de substances de stockage d'hydrogène solide ou liquide. Dans un mode de réalisation, des vannes rotatives de faible volume sont employées pour doser des échantillons dans un porte-échantillon. Dans un autre mode de réalisation, une vanne rotative est employée en tant que vanne de dosage/dérivation pour le conditionnement et la mesure d'échantillons. L'invention concerne également un actionneur destiné à une vanne rotative présentant une commande manuelle prioritaire.

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