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ES2153740A1 - Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido - Google Patents

Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido

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Publication number
ES2153740A1
ES2153740A1 ES009801475A ES9801475A ES2153740A1 ES 2153740 A1 ES2153740 A1 ES 2153740A1 ES 009801475 A ES009801475 A ES 009801475A ES 9801475 A ES9801475 A ES 9801475A ES 2153740 A1 ES2153740 A1 ES 2153740A1
Authority
ES
Spain
Prior art keywords
measurement
crystal
frequency
piezometric
fluid
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.)
Granted
Application number
ES009801475A
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English (en)
Other versions
ES2153740B1 (es
Inventor
Vives Antonio Arnau
Devesa Tomas Sogorb
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 Politecnica de Valencia
Original Assignee
Universidad Politecnica de Valencia
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 Politecnica de Valencia filed Critical Universidad Politecnica de Valencia
Priority to ES9801475A priority Critical patent/ES2153740B1/es
Publication of ES2153740A1 publication Critical patent/ES2153740A1/es
Application granted granted Critical
Publication of ES2153740B1 publication Critical patent/ES2153740B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezométrico en un fluido. Sistema de medida para conocer los parámetros eléctricos de un cristal piezoeléctrico en estado de resonancia y sumergido en un fluido, e indirectamente, medir los cambios de masa superficial del sensor y de variaciones de las propiedades físicas del medio fluido tales como densidad y viscosidad o rozamiento viscoso. Se emplea un método de medida de tipo pasivo donde el resonador es excitado por una fuente externa de frecuencia variable, y que está basado en puentes de impedancia y en líneas de transmisión. El circuito de medida tiene, entre otros, un oscilador controlado por tensión o un sintetizador de frecuencia, un detector de fase y un integrador o convertidor analógicodigital con microprocesador. Se mide la capacidad estática del cristal piezoeléctrico y se compensa mediante un ajuste en componentes pasivos asociados, que varía la frecuencia deenganche. Pertenece al campo de los sensores microgravimétricos y microbalanzas de precisión.
ES9801475A 1998-07-08 1998-07-08 Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido Expired - Fee Related ES2153740B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9801475A ES2153740B1 (es) 1998-07-08 1998-07-08 Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9801475A ES2153740B1 (es) 1998-07-08 1998-07-08 Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido

Publications (2)

Publication Number Publication Date
ES2153740A1 true ES2153740A1 (es) 2001-03-01
ES2153740B1 ES2153740B1 (es) 2001-10-01

Family

ID=8304487

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9801475A Expired - Fee Related ES2153740B1 (es) 1998-07-08 1998-07-08 Sistema para compensar los efectos de rozamiento viscoso en la medida de la frecuencia de resonancia de un cristal piezometrico en un fluido

Country Status (1)

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ES (1) ES2153740B1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2197796A1 (es) * 2002-01-31 2004-01-01 Univ Valencia Politecnica Circuito para la caracterizacion de sensores de cristal de cuarzo resonante en medios fluidos.
ES2333088A1 (es) * 2009-06-23 2010-02-16 Universidad Politecnica De Valencia Metodo y dispositivo de nanogravimetria en medios fluidos basado en resonadores piezoelectricos.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447782A (en) * 1982-03-17 1984-05-08 Transat Corp. Apparatus for automatic measurement of equivalent circuit parameters of piezoelectric resonators
US5112642A (en) * 1990-03-30 1992-05-12 Leybold Inficon, Inc. Measuring and controlling deposition on a piezoelectric monitor crystal
US5117192A (en) * 1990-01-12 1992-05-26 Leybold Inficon Inc. Control circuitry for quartz crystal deposition monitor
US5201215A (en) * 1991-10-17 1993-04-13 The United States Of America As Represented By The United States Department Of Energy Method for simultaneous measurement of mass loading and fluid property changes using a quartz crystal microbalance
WO1996035103A1 (en) * 1995-05-04 1996-11-07 Michael Rodahl A piezoelectric crystal microbalance device
US5734098A (en) * 1996-03-25 1998-03-31 Nalco/Exxon Energy Chemicals, L.P. Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors
EP0849907A2 (en) * 1996-09-10 1998-06-24 Tektronix, Inc. Phase measurement apparatus and method
JPH10177049A (ja) * 1996-12-18 1998-06-30 Rion Co Ltd 圧電素子特性試験装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447782A (en) * 1982-03-17 1984-05-08 Transat Corp. Apparatus for automatic measurement of equivalent circuit parameters of piezoelectric resonators
US5117192A (en) * 1990-01-12 1992-05-26 Leybold Inficon Inc. Control circuitry for quartz crystal deposition monitor
US5112642A (en) * 1990-03-30 1992-05-12 Leybold Inficon, Inc. Measuring and controlling deposition on a piezoelectric monitor crystal
US5201215A (en) * 1991-10-17 1993-04-13 The United States Of America As Represented By The United States Department Of Energy Method for simultaneous measurement of mass loading and fluid property changes using a quartz crystal microbalance
WO1996035103A1 (en) * 1995-05-04 1996-11-07 Michael Rodahl A piezoelectric crystal microbalance device
US5734098A (en) * 1996-03-25 1998-03-31 Nalco/Exxon Energy Chemicals, L.P. Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors
EP0849907A2 (en) * 1996-09-10 1998-06-24 Tektronix, Inc. Phase measurement apparatus and method
JPH10177049A (ja) * 1996-12-18 1998-06-30 Rion Co Ltd 圧電素子特性試験装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2197796A1 (es) * 2002-01-31 2004-01-01 Univ Valencia Politecnica Circuito para la caracterizacion de sensores de cristal de cuarzo resonante en medios fluidos.
ES2197796B1 (es) * 2002-01-31 2005-02-16 Universidad Politecnica De Valencia Sistema de caracterizacion de sensores de cristal de cuarzo resonante en medios fluidos, y procedimiento de calibracion y compensacion de la capacidad del cristal de cuarzo.
ES2333088A1 (es) * 2009-06-23 2010-02-16 Universidad Politecnica De Valencia Metodo y dispositivo de nanogravimetria en medios fluidos basado en resonadores piezoelectricos.
WO2010149811A1 (es) * 2009-06-23 2010-12-29 Universidad Politécnica De Valencia Método y dispositivo de nanogravimetría en medios fluidos basado en resonadores piezoeléctricos
ES2333088B2 (es) * 2009-06-23 2011-02-07 Universidad Politecnica De Valencia Metodo y dispositivo de nanogravimetria en medios fluidos basado en resonadores piezoelectricos.
CN102625906A (zh) * 2009-06-23 2012-08-01 巴伦西亚理工大学 用于使用压电谐振器的流体介质中的纳米重量测定的方法和设备
US8869617B2 (en) 2009-06-23 2014-10-28 Universidad Politecnica De Valencia Method and device for nanogravimetry in fluid media using piezoelectric resonators

Also Published As

Publication number Publication date
ES2153740B1 (es) 2001-10-01

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