Method of device for testing a capacitively operating measuring device, which is designed for the detection of phase boundaries, and correspondingly equipped laboratory apparatus
US9074919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2012 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Dec 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device has at least one channel for detecting the phase boundary between media in a liquid container and has a probe which can be fed in the direction of the phase boundary and a circuit which processes a signal of the probe to detect a capacitance change. The device includes a testing module which executes an infeed movement of the probe. The testing module performs an analysis of the signal of the channel, and makes a connection statement about the electrical connection between the probe and the measuring circuit. The testing of the electrical connections is performed in a dry manner, i.e., a phase boundary does not have to be searched for or penetrated for the testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.