Patent · US Active

Method for ascertaining at least one malfunction of a conductive conductivity sensor

US9329226B2 · kind B2 · utility

2Cited by

8References

4Claims

0Family size

Assignee

Endress+Hauser Conducta Gesellschaft fuer Mess- und Regeltechnik mbH + Co. KG · DE

Inventors

Stefan Paul · Pinzberg, DE
Stephan Buschnakowski · Chemnitz, DE
Robert Tzschoppe · Großweitzschen, DE

Key dates

Filing date	Jul 12, 2013
Grant date	May 3, 2016
Priority date	—
Expiry date	Nov 19, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/2829
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and a sensor for ascertaining at least one malfunction of a conductive conductivity sensor having at least two electrodes applying a first electrical variable to the electrodes measuring at least a second electrical variable on the electrodes and deciding whether a malfunction is present based on measuring the second electrical variable. The second electrical variable is located in a first range when measuring the medium when no malfunction is present, and the second electrical variable is located in a second range in the case of a first malfunction, especially when the conductivity sensor is located at least partially outside of the medium, and the second electrical variable is located in a third range when a second malfunction is present, especially an electrode break or a break in a line to the electrodes.

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