Apparatus and method for measuring electrical properties of matter
US9835573B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 12, 2014 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Aug 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a method and an apparatus for measuring electrical conductivity of liquids. In one aspect, the apparatus includes a waveform generator module configured to generate a first waveform signal and to supply the first waveform signal to a sensor; a phase adjustment module configured to receive the first waveform signal from the waveform generator module and to generate a phase-shifted signal from the first waveform signal, said phase-shifted signal having a phase that is adjusted based upon expected or measured properties of the liquid and further adjusted to eliminate phase error induced inaccuracies in the measurement; and a signal combination module configured to receive a return signal from the sensor and the phase-shifted signal from the phase adjustment module and to sum the return signal and the phase-shifted signal to produce an adjusted return signal containing information associated with the electrical property of the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.