Method and apparatus for degassing a liquid and analytical device having the apparatus
US9435729B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Oct 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for degassing a liquid by means of a piston pump unit having a receiving chamber serving for accommodating the liquid to be degassed and connected with at least one supply line and at least one drain line, and a piston seated in the receiving chamber for performing stroke movements. The piston provides a liquid sealing of the receiving chamber on one end. The following steps are included: drawing liquid via the supply line into the receiving chamber by performing a first stroke movement of the piston in the case of blocked drain line and open supply line; producing a negative pressure in the receiving chamber by continuing the first stroke movement of the piston in the case of blocked supply line and blocked drain line; and opening the drain line and removing a gas phase present in the receiving chamber from the receiving chamber via the drain line by performing a second stroke movement of the piston directed counter to the first stroke movement in the case of an opened drain line and blocked supply line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.