Patent · US Active

Method for measuring a conductivity of a medium

US11879861B2 · kind B2 · utility

0Cited by

7References

10Claims

0Family size

Assignee

Endress+Hauser Conducta GmbH+Co. KG · DE

Inventors

Stefan Paul · Pinzberg, DE
Andre Thieme · Borna, DE

Key dates

Filing date	Mar 28, 2022
Grant date	Jan 23, 2024
Priority date	—
Expiry date	Apr 15, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/07
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for measuring an electrical conductivity of a medium with a conductive conductivity sensor with four electrodes includes measuring a first impedance dependent on a first total impedance of the first voltage electrode and a medium layer adjacent to the first voltage electrode, measuring a second impedance dependent on a second total impedance of the second voltage electrode and a medium layer adjacent to the second voltage electrode, and making a conductivity measurement using an alternating electrical signal introduced into the medium via the first current electrode and measuring a potential difference between the first voltage electrode and the second voltage electrode. Based on the measured potential difference, the first impedance, and the second impedance a corrected potential difference is determined. Based on the corrected potential difference, a measured conductivity is determined.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.