Patent · US Active

Method for monitoring a measuring device of automation technology

US10175089B2 · kind B2 · utility

1Cited by

5References

10Claims

0Family size

Assignee

Endress+Hauser Flowtec AG · CH

Inventors

Hanspeter Schmid · Küttigen, CH
Werner Tanner · Gelterkinden, CH
Dirk Sutterlin · Schopfheim, DE
Martin Koch · Neuenbürg, DE

Key dates

Filing date	Aug 12, 2014
Grant date	Jan 8, 2019
Priority date	—
Expiry date	Aug 12, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/64
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for monitoring a measuring device of automation technology, wherein the measuring device has a capacitive sensor the sensor has at least one capacitor, and the at least one capacitor is applied for determining or monitoring a process variable. A loss resistance of the at least one capacitor is measured by determining the charge state of the at least one capacitor at a first point in time and at a subsequent, second point in time, and, based on a change of the charge state between the first point in time and the second point in time, information is won concerning disturbance of the ability of the measuring device to function.

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