WO2007073837A3 - Level measuring arrangement with a safety cut-out at high temperatures - Google Patents

Level measuring arrangement with a safety cut-out at high temperatures Download PDF

Info

Publication number
WO2007073837A3
WO2007073837A3 PCT/EP2006/011698 EP2006011698W WO2007073837A3 WO 2007073837 A3 WO2007073837 A3 WO 2007073837A3 EP 2006011698 W EP2006011698 W EP 2006011698W WO 2007073837 A3 WO2007073837 A3 WO 2007073837A3
Authority
WO
WIPO (PCT)
Prior art keywords
oscillation
temperature
signal
arrangement
high temperatures
Prior art date
Application number
PCT/EP2006/011698
Other languages
German (de)
French (fr)
Other versions
WO2007073837A2 (en
Inventor
Adrian Frick
Siegbert Woehrle
Original Assignee
Grieshaber Vega Kg
Adrian Frick
Siegbert Woehrle
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 Grieshaber Vega Kg, Adrian Frick, Siegbert Woehrle filed Critical Grieshaber Vega Kg
Priority to EP06829332A priority Critical patent/EP1966569A2/en
Priority to CN2006800476191A priority patent/CN101331388B/en
Publication of WO2007073837A2 publication Critical patent/WO2007073837A2/en
Publication of WO2007073837A3 publication Critical patent/WO2007073837A3/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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves 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 vibration limit switch arrangement comprising a control device (19, 16) for producing an excitation signal (s) and/or for processing a receiver signal (e), a piezoelectric oscillation device (10, 12) for generating a mechanical oscillation according to the excitation signal and/or for converting a mechanical oscillation into a receiver signal, and an oscillation arrangement (3) for emitting the mechanical oscillation generated by the oscillation device into the surroundings of the oscillation arrangement. A temperature determination device (19, 17) is used to determine the temperature (T) of the oscillation device (10, 12) and/or the temperature of the surroundings of the oscillation device, and the control device (19) is embodied in such a way as to generate a switching signal (sw) and/or a warning signal (w) when a threshold temperature is reached or according to the temperature (T). The invention also relates to a correspondingly designed method for operating the vibration limit switch.
PCT/EP2006/011698 2005-12-27 2006-12-06 Level measuring arrangement with a safety cut-out at high temperatures WO2007073837A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06829332A EP1966569A2 (en) 2005-12-27 2006-12-06 Level measuring arrangement with a safety cut-out at high temperatures
CN2006800476191A CN101331388B (en) 2005-12-27 2006-12-06 Level measuring arrangement with a safety cut-out at high temperatures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005062813A DE102005062813B4 (en) 2005-12-27 2005-12-27 Level measuring system with safety shutdown at high temperatures
DE102005062813.3 2005-12-27

Publications (2)

Publication Number Publication Date
WO2007073837A2 WO2007073837A2 (en) 2007-07-05
WO2007073837A3 true WO2007073837A3 (en) 2007-08-16

Family

ID=37726979

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/011698 WO2007073837A2 (en) 2005-12-27 2006-12-06 Level measuring arrangement with a safety cut-out at high temperatures

Country Status (4)

Country Link
EP (1) EP1966569A2 (en)
CN (1) CN101331388B (en)
DE (1) DE102005062813B4 (en)
WO (1) WO2007073837A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2711627T3 (en) 2006-12-28 2019-05-06 Pioneer Hi Bred Int Genetic markers for resistance to orobanca in sunflower
DE102009029490B4 (en) * 2009-09-16 2023-09-28 Endress+Hauser SE+Co. KG Level measuring device
DE102010002608A1 (en) 2009-12-29 2011-06-30 Endress + Hauser GmbH + Co. KG, 79689 Device for determining at least one process variable
DE102010030791A1 (en) 2010-07-01 2012-01-05 Endress + Hauser Gmbh + Co. Kg Device for determining and / or monitoring a process variable of a medium
DE102011090015B4 (en) * 2011-12-28 2023-12-28 Endress+Hauser SE+Co. KG Device for determining and/or monitoring at least one process variable
DE102013109277A1 (en) 2013-08-27 2015-03-05 Endress + Hauser Gmbh + Co. Kg Device for determining or monitoring a process variable
US11566936B1 (en) 2016-02-12 2023-01-31 Munters Corporation Method and apparatus to non-intrusively measure the weight of loose bulk material within a rigid containing structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU517312B2 (en) * 1978-11-02 1981-07-23 Andreevich Markelov And Anatoly Alexandrovich Baranovsky Vsevolod Vibrating rod level detector
EP0282251A2 (en) * 1987-03-11 1988-09-14 Solartron Group Limited Fluid transducer
EP1624291A2 (en) * 2004-08-02 2006-02-08 VEGA Grieshaber KG Self-diagnosis of a vibrating level gauge

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Publication number Priority date Publication date Assignee Title
US3712117A (en) * 1971-01-12 1973-01-23 Nat Metal & Refining Co High precision wide dynamic range viscous loss measuring apparatus
NL8801836A (en) * 1988-07-20 1990-02-16 Enraf Nonius Delft DEVICE FOR DETERMINING THE LEVEL OF THE BOUNDARY AREA BETWEEN A FIRST AND A SECOND MEDIUM IN A RESERVOIR.
GB9122704D0 (en) * 1991-10-25 1991-12-11 Secretary Trade Ind Brit Sensors
CN1086900A (en) * 1992-11-07 1994-05-18 浙江大学 Vibrative powder storehouse powder position monitoring method and device
US6073492A (en) * 1998-12-17 2000-06-13 Kay-Ray Sensall, Inc. Ultrasonic sensor for very high temperatures and pressures
US6548416B2 (en) * 2001-07-24 2003-04-15 Axcelis Technolgoies, Inc. Plasma ashing process
DE10203461A1 (en) * 2002-01-28 2003-08-14 Grieshaber Vega Kg Vibration level sensor
US6714880B2 (en) * 2002-05-13 2004-03-30 Entek Ird International Corporation Multi-alarm monitoring and protection system
DE10237931A1 (en) * 2002-08-14 2004-02-26 Endress + Hauser Gmbh + Co. Kg Fixed, filling level monitoring, density, and viscosity measurement device, comprises a vibrator fixed at a chosen level, with a microprocessor to control feedback electronics to provide a constant phase-frequency response
DE10349309A1 (en) * 2003-10-23 2005-05-25 Siemens Ag Actuator with a temperature sensor and method of manufacturing such an actuator
DE102005015546A1 (en) * 2005-04-04 2006-10-05 Endress + Hauser Gmbh + Co. Kg Liquid medium`s process variable e.g. level, measuring device for e.g. monitoring process variable, has detection unit provided to determine and/or control pressure in direction perpendicular to diaphragm by vibrating diaphragm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU517312B2 (en) * 1978-11-02 1981-07-23 Andreevich Markelov And Anatoly Alexandrovich Baranovsky Vsevolod Vibrating rod level detector
EP0282251A2 (en) * 1987-03-11 1988-09-14 Solartron Group Limited Fluid transducer
EP1624291A2 (en) * 2004-08-02 2006-02-08 VEGA Grieshaber KG Self-diagnosis of a vibrating level gauge

Also Published As

Publication number Publication date
WO2007073837A2 (en) 2007-07-05
CN101331388A (en) 2008-12-24
DE102005062813B4 (en) 2009-11-26
EP1966569A2 (en) 2008-09-10
DE102005062813A1 (en) 2007-07-05
CN101331388B (en) 2011-02-16

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