Analyzer, and method of detection liquid level in an analyzer
US9733115B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2015 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Aug 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention improves the technology for detecting the level of a reagent in a container using changes of the capacitance, for instance, of an aspiration tube for aspirating the reagent from the container. The present invention can eliminate noises to detection of the capacitance caused by metals surrounding the container and changes of the moving speed of aspiration tube. Changes of the capacitance are detected using an empty container and recorded. The recorded changes are subtracted from changes of the capacitance measured with a container containing a reagent to eliminate the noises to the detection of changes of the capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.