Pump for liquid chromatograph, and liquid chromatograph
US9410543B2 · kind B2 · utility
3Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2011 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/326
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pump controller causes a first plunger pump and a second plunger pump connected in series or in parallel to perform intake and compression actions alternately at substantially constant cycles, sets a pressurizing chamber of one of the plunger pumps to a state of a higher pressure than the pressurizing chamber of the other plunger pump, and performs flow rate control by adjusting lift amounts of the first plunger and the second plunger. Thus, it is possible to provide a pump for liquid chromatograph, and a liquid chromatograph, which are capable of reducing pulsations even when an ejection flow rate is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.