ES2155739B1 - Aparato para la determinacion de masa y densidad. - Google Patents

Aparato para la determinacion de masa y densidad.

Info

Publication number
ES2155739B1
ES2155739B1 ES9800587A ES9800587A ES2155739B1 ES 2155739 B1 ES2155739 B1 ES 2155739B1 ES 9800587 A ES9800587 A ES 9800587A ES 9800587 A ES9800587 A ES 9800587A ES 2155739 B1 ES2155739 B1 ES 2155739B1
Authority
ES
Spain
Prior art keywords
sensor
mass
oscillation
density
metallic
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
ES9800587A
Other languages
English (en)
Other versions
ES2155739A1 (es
Inventor
Rodriguez Gloria Tardajos
Alvarez Jose Herrero
Gaitano Gustavo Gonzalez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad Complutense de Madrid
Original Assignee
Universidad Complutense de Madrid
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 Universidad Complutense de Madrid filed Critical Universidad Complutense de Madrid
Priority to ES9800587A priority Critical patent/ES2155739B1/es
Priority claimed from ES9700574A external-priority patent/ES2123452B1/es
Priority to AU64011/98A priority patent/AU6401198A/en
Priority to PCT/ES1998/000066 priority patent/WO1998041839A1/es
Priority to EP98909498A priority patent/EP0905504A1/en
Publication of ES2155739A1 publication Critical patent/ES2155739A1/es
Application granted granted Critical
Publication of ES2155739B1 publication Critical patent/ES2155739B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/16—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of frequency of oscillations of the body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G01N2009/006—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/014—Resonance or resonant frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

Aparato para la determinación de masa y densidad. Se describe un dispositivo electromecánico para mantener la oscilación de una masa vibrante, de utilidad en aplicaciones en las que sea preciso conocer la masa y/o la densidad. Un sensor (1), metálico o metalizado, en presencia de un campo magnético creado por uno o más imanes (3), actúa simultáneamente como impulsor y receptor de la oscilación. La FEM inducida al oscilar, debidamente amplificada por un operacional, produce una corriente en fase capaz de mantener la oscilación. El sensor forma parte de un puente de Weastone para conseguir que sólo se amplifique la FEM. El control de amplitud obliga al sensor a vibrar a su frecuencia de resonancia (libre de armónicos). Un sistema con dos hilos de excitación (E1, E2), y dos de recepción (D1, D2), elimina el efecto de la longitud de los cables entre la parte electrónica y el sensor.
ES9800587A 1997-03-18 1997-03-18 Aparato para la determinacion de masa y densidad. Expired - Fee Related ES2155739B1 (es)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES9800587A ES2155739B1 (es) 1997-03-18 1997-03-18 Aparato para la determinacion de masa y densidad.
AU64011/98A AU6401198A (en) 1997-03-18 1998-03-18 Apparatus for determining the mass and the density
PCT/ES1998/000066 WO1998041839A1 (es) 1997-03-18 1998-03-18 Aparato para la determinacion de masa y densidad
EP98909498A EP0905504A1 (en) 1997-03-18 1998-03-18 Apparatus for determining the mass and the density

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9800587A ES2155739B1 (es) 1997-03-18 1997-03-18 Aparato para la determinacion de masa y densidad.
ES9700574A ES2123452B1 (es) 1997-03-18 1997-03-18 Aparato para la determinacion de masa y densidad.

Publications (2)

Publication Number Publication Date
ES2155739A1 ES2155739A1 (es) 2001-05-16
ES2155739B1 true ES2155739B1 (es) 2001-12-01

Family

ID=26155044

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9800587A Expired - Fee Related ES2155739B1 (es) 1997-03-18 1997-03-18 Aparato para la determinacion de masa y densidad.

Country Status (4)

Country Link
EP (1) EP0905504A1 (es)
AU (1) AU6401198A (es)
ES (1) ES2155739B1 (es)
WO (1) WO1998041839A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9341059B2 (en) 2009-04-15 2016-05-17 Schlumberger Technology Corporation Microfluidic oscillating tube densitometer for downhole applications

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027886B (en) * 1978-08-14 1983-02-02 Solartron Electronic Group Transducer for sensing a parameter of a fluid
GB8408527D0 (en) * 1984-04-03 1984-05-16 Health Lab Service Board Fluid density measurement
US4655075A (en) * 1984-09-26 1987-04-07 University Of Delaware Vibrating tube densimeter
US4793182A (en) * 1987-06-02 1988-12-27 Djorup Robert Sonny Constant temperature hygrometer
FR2645272B1 (fr) * 1989-03-30 1991-07-19 Instrulab Capteur de densimetre a vibrations
US4934196A (en) * 1989-06-02 1990-06-19 Micro Motion, Inc. Coriolis mass flow rate meter having a substantially increased noise immunity
ES2123452B1 (es) * 1997-03-18 1999-09-16 Univ Madrid Complutense Aparato para la determinacion de masa y densidad.

Also Published As

Publication number Publication date
AU6401198A (en) 1998-10-12
EP0905504A1 (en) 1999-03-31
ES2155739A1 (es) 2001-05-16
WO1998041839A1 (es) 1998-09-24

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