WO2005031268A3 - Measuring device for detecting a threshold value - Google Patents

Measuring device for detecting a threshold value Download PDF

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Publication number
WO2005031268A3
WO2005031268A3 PCT/EP2004/010405 EP2004010405W WO2005031268A3 WO 2005031268 A3 WO2005031268 A3 WO 2005031268A3 EP 2004010405 W EP2004010405 W EP 2004010405W WO 2005031268 A3 WO2005031268 A3 WO 2005031268A3
Authority
WO
WIPO (PCT)
Prior art keywords
threshold value
measuring device
detecting
measuring
deterioration
Prior art date
Application number
PCT/EP2004/010405
Other languages
German (de)
French (fr)
Other versions
WO2005031268A2 (en
Inventor
Hartmut Flaemig
Michael Klotzbach
Original Assignee
Siemens Ag
Hartmut Flaemig
Michael Klotzbach
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag, Hartmut Flaemig, Michael Klotzbach filed Critical Siemens Ag
Publication of WO2005031268A2 publication Critical patent/WO2005031268A2/en
Publication of WO2005031268A3 publication Critical patent/WO2005031268A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/265—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors for discrete levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level

Abstract

The invention relates to a measuring device which is used to detect a threshold value and which monitors an analog measuring value to see if it exceeds the threshold value and if it is below the threshold value or another threshold value and which produces, a logical signal in accordance therewith which is used to indicate one of two possible states. The measuring device is configured in such a manner that it can automatically diagnose a possible defect in the measuring device caused by deterioration, i.e. through wear and tear. The measuring device detects the distance between the analog measuring values (S) and the nearest threshold value (S1, S2) in at least one of the two states and determines deterioration and the remainder of the service life of the measuring device.
PCT/EP2004/010405 2003-09-18 2004-09-16 Measuring device for detecting a threshold value WO2005031268A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10343224 2003-09-18
DE10343224.8 2003-09-18

Publications (2)

Publication Number Publication Date
WO2005031268A2 WO2005031268A2 (en) 2005-04-07
WO2005031268A3 true WO2005031268A3 (en) 2005-06-09

Family

ID=34384214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/010405 WO2005031268A2 (en) 2003-09-18 2004-09-16 Measuring device for detecting a threshold value

Country Status (1)

Country Link
WO (1) WO2005031268A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008018263U1 (en) 2008-07-29 2012-07-12 Di-Soric Gmbh & Co. Kg Measuring device with different operating conditions
DE102008035531B4 (en) * 2008-07-29 2012-06-28 Di-Soric Gmbh & Co. Kg Method for determining different operating states of an electronic measuring device
DE102019200359B4 (en) * 2019-01-14 2020-11-05 Vega Grieshaber Kg METHOD AND DEVICE FOR DETERMINING A THRESHOLD VALUE FOR A LIMIT LEVEL SENSOR
DE102021126826A1 (en) 2021-10-15 2023-04-20 Vega Grieshaber Kg Computer-implemented method for classifying a medium, data processing device and measuring device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156883A (en) * 1976-06-30 1979-05-29 Erwin Sick Gesellschaft Mit Beschrankter Haftung Optik-Elektronik Light barrier arrangement
EP0501194A1 (en) * 1991-02-26 1992-09-02 Siemens Aktiengesellschaft Method of predetermining the time of maintenance of alarm detectors
US5289011A (en) * 1992-11-30 1994-02-22 Xerox Corporation Sensor control system and method compensating for degradation of the sensor and indicating a necessity of service prior to sensor failure
DE4305195C1 (en) * 1993-02-19 1994-06-30 Schlueter Fotosensorik Gmbh & Light sensor for detecting and counting presence of objects
DE19536026A1 (en) * 1995-09-27 1996-05-23 Siemens Nixdorf Inf Syst Light barrier system with contamination detection
US5539670A (en) * 1986-03-13 1996-07-23 Drexelbrook Controls, Inc. Coating responsive material condition monitoring system
DE19525057C1 (en) * 1995-07-10 1997-02-13 Futronic Gmbh Light barrier device and method for processing a light sensor output signal
US5756876A (en) * 1995-09-28 1998-05-26 Endress + Hauser Gmbh + Co. Method of setting the switching point of a capacitive level limit switch
US6318172B1 (en) * 1997-01-28 2001-11-20 Abb Research Ltd. Capacitive level detector with optimized electrode geometry

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156883A (en) * 1976-06-30 1979-05-29 Erwin Sick Gesellschaft Mit Beschrankter Haftung Optik-Elektronik Light barrier arrangement
US5539670A (en) * 1986-03-13 1996-07-23 Drexelbrook Controls, Inc. Coating responsive material condition monitoring system
EP0501194A1 (en) * 1991-02-26 1992-09-02 Siemens Aktiengesellschaft Method of predetermining the time of maintenance of alarm detectors
US5289011A (en) * 1992-11-30 1994-02-22 Xerox Corporation Sensor control system and method compensating for degradation of the sensor and indicating a necessity of service prior to sensor failure
DE4305195C1 (en) * 1993-02-19 1994-06-30 Schlueter Fotosensorik Gmbh & Light sensor for detecting and counting presence of objects
DE19525057C1 (en) * 1995-07-10 1997-02-13 Futronic Gmbh Light barrier device and method for processing a light sensor output signal
DE19536026A1 (en) * 1995-09-27 1996-05-23 Siemens Nixdorf Inf Syst Light barrier system with contamination detection
US5756876A (en) * 1995-09-28 1998-05-26 Endress + Hauser Gmbh + Co. Method of setting the switching point of a capacitive level limit switch
US6318172B1 (en) * 1997-01-28 2001-11-20 Abb Research Ltd. Capacitive level detector with optimized electrode geometry

Also Published As

Publication number Publication date
WO2005031268A2 (en) 2005-04-07

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