FLOW CONTROL DEVICE FOR THE ANALYTICAL CIRCUIT AND ITS USAGE IN CHROMATOGRAPHY Russian patent published in 2007 - IPC G01N30/32 

FIELD: chemical industry; petrochemical industry; flow control devices used in the circuits of analysis.

SUBSTANCE: the invention presents the flow control device for the analytic circuit, which contains: the throttling gear (R) for the fluid medium with the length and the diameter corresponding to the field of application of the analytic circuit; the controller (2) of the direct pressures installed above the streamwise with respect to the throttling gear (R); the controller (4) of the reverse pressures installed below the streamwise with respect to the throttling gear (R). Usage of the indicated flow control device in the throttling circuit, in the separation control circuit and in the multicolumn analytic diagram decreases the analytical error.

EFFECT: the invention decreases the analytical error.

10 cl, 4 dwg