Method for controlling a magnetic valve and method for dispensing or aspirating a volume of liquid as well as corresponding dispenser/pipetting apparatus
US11719355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2019 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Apr 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1888
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling a magnetic valve and particularly a method for dispensing and/or aspirating a volume of liquid as well as a corresponding dispenser/pipetting apparatus is disclosed. The method for controlling a magnetic valve has measuring a capacitance at the magnetic valve and determining a position of a plunger based on the measured capacitance. The method for dispensing or aspirating a volume of liquid has controlling a flow of a system fluid by a magnetic valve located between a pressure source and a dispenser/pipetting tip, dispensing or aspirating a volume of liquid through an exterior opening of the tip dependent on the flow of the system fluid, wherein controlling the flow and determining a flow time in dependence of the volume of liquid to be dispensed or aspirated, and controlling the magnetic valve is held open for the duration of the flow time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.