Capacitive measuring method and apparatus for fill level detection and correspondingly equipped laboratory equipment
US8763454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2011 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to apparatuses (100) for the capacitive determination of the fill level in the individual containers (5.1, 5.2) of a group (10) of regularly disposed containers of the same dimensions, wherein the apparatus (100) comprises a transmitter electrode (201.1) and a receiver electrode (201.2, 201.3) as well as a circuit for carrying out a capacitive measurement. The measuring circuit comprises a transmitting circuit (57) and a receiving circuit (58) and the apparatus (100) comprises a horizontal base plate (200) having a plurality of electrodes (201.1, 201.2, 201.3) which protrude in one direction in relation to a horizontal plane defined by the base plate (200) and which are uniformly mutually spaced apart such that a plurality of working zones of the same dimensions are formed. A plurality of connections (202) are provided through which some of the electrodes (201.1) are connectable to the transmitting circuit (57) and controllable by said circuit and some of the electrodes (201.2, 201.3) are connectable to the receiving circuit (58) and can be read out by said circuit. In the area of each working zone in the horizontal plane at least respectively two electrodes (…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.