G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/14 (2006.01) G01N 27/447 (2006.01)
Patent
CA 2205570
A present invention and method provides a pressure injection apparatus (20) that injects a quantitatively defined volume of liquid sample (21) from a container (22) into a capillary device (23). A servo pressure primary regulator (26) is included which precisely regulates the fluid from a supply pressure (PS) to a substantially constant regulated pressure (PR) in communication with the liquid sample (21) for a predetermined period of time. A feedback mechanism cooperates with a valving assembly (31) to continuously monitor and adjust the regulated pressure (PR) to be substantially constant and precise for delivery to the container (21).
La présente invention et le procédé associé ont trait à un appareil d'injection sous pression (20) injectant un volume défini d'un échantillon liquide (21) provenant d'un réservoir (22) dans un dispositif capillaire (23). Un manostat primaire de pression (26) maintient la pression (P¿S?) du fluide provenant du réservoir à un niveau régulé (P¿R?) constant en communication avec l'échantillon de liquide (21) pendant une durée prédéterminée. Un mécanisme de rétroaction coopérant avec un ensemble (31) de soupapes suit et maintient en permanence la pression régulée (P¿R?) d'alimentation du réservoir (21) à un niveau sensiblement constant et précis.
Recknor Michael William
Wolze David A.
Dionex Corporation
Smart & Biggar
LandOfFree
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