Method of pump operation, use of the method in HPLC, pump, pump system, and HPLC system

US10767643B2 · kind B2 · utility

Assignee

• Dionex Softron GmbH · DE

Inventors

• Christoph Strobl · Munich, DE
• Michael HAECKEL · Germering, DE
• Stefan Seitz · Windach, DE

Key dates

• Filing date: Jul 5, 2018
• Grant date: Sep 8, 2020
• Expiry date: Mar 28, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2030/326
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to a method of operating a pump generating a flow of a fluid with a pressure, the method comprising operating the pump with a pump speed S satisfying the equation S=Ssimple(1+COR(t)); wherein S is the pump speed, Ssimple is the pump speed disregarding any compression and/or expansion of the fluid, t is a time, and COR(t) is a time dependent correction function; wherein the time dependent correction function COR(t) is a product of a corrective amplitude Acor and a time-dependent function f(t), i.e., COR(t)=Acor·ƒ(t); and wherein the corrective amplitude Acor is set based on a measure for the flow and a measure for the pressure. The present invention also relates to a corresponding use, a pump, a pump system and an HPLC system.