ES2197796A1 - System for characterization of resonant quartz crystal sensors in fluid media, and procedure of calibration and compensation of quartz crystal capacity. (Machine-translation by Google Translate, not legally binding) - Google Patents

System for characterization of resonant quartz crystal sensors in fluid media, and procedure of calibration and compensation of quartz crystal capacity. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES2197796A1
ES2197796A1 ES200200306A ES200200306A ES2197796A1 ES 2197796 A1 ES2197796 A1 ES 2197796A1 ES 200200306 A ES200200306 A ES 200200306A ES 200200306 A ES200200306 A ES 200200306A ES 2197796 A1 ES2197796 A1 ES 2197796A1
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Spain
Prior art keywords
quartz crystal
compensation
sensor
calibration
translation
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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
ES200200306A
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Spanish (es)
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ES2197796B1 (en
Inventor
Vives Antonio Arnau
Jimenez Yolanda Jimenez
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
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Universidad Politecnica de Valencia
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Priority to ES200200306A priority Critical patent/ES2197796B1/en
Publication of ES2197796A1 publication Critical patent/ES2197796A1/en
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Publication of ES2197796B1 publication Critical patent/ES2197796B1/en
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Expired - Fee Related legal-status Critical Current

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Abstract

Sensor characterization system of resonant quartz crystal in fluid media, and calibration procedure and compensation of quartz crystal capacity. The system of the invention continuously and automatically supplies the series resonance frequency and the resistance of the dynamic branch and of a quartz resonator. The frequency supplied is independent of the dynamic resistance and the static capacity of the crystal. The system is designed to compensate the capacitive effects in parallel with the sensor, incorporating a phase-locked loop and a circuit that provides the dynamic resistance of the resonator. It also includes procedures for calibration of the circuit external to the sensor and for capacitive compensation. . The invention has utility in applications in which quartz resonators are used as sensors, such as: for the determination of the visco-elastic properties of fluids, for the detection of specific chemical species in gaseous environment or in solution by means of the suitable coating of the sensor, among other. (Machine-translation by Google Translate, not legally binding)
ES200200306A 2002-01-31 2002-01-31 CHARACTERIZATION SYSTEM OF RESISTANT CRYSTAL SENSORS IN FLUID MEDIA, AND CALIBRATION AND COMPENSATION PROCEDURE OF THE QUARTZ CRYSTAL CAPACITY. Expired - Fee Related ES2197796B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200200306A ES2197796B1 (en) 2002-01-31 2002-01-31 CHARACTERIZATION SYSTEM OF RESISTANT CRYSTAL SENSORS IN FLUID MEDIA, AND CALIBRATION AND COMPENSATION PROCEDURE OF THE QUARTZ CRYSTAL CAPACITY.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200200306A ES2197796B1 (en) 2002-01-31 2002-01-31 CHARACTERIZATION SYSTEM OF RESISTANT CRYSTAL SENSORS IN FLUID MEDIA, AND CALIBRATION AND COMPENSATION PROCEDURE OF THE QUARTZ CRYSTAL CAPACITY.

Publications (2)

Publication Number Publication Date
ES2197796A1 true ES2197796A1 (en) 2004-01-01
ES2197796B1 ES2197796B1 (en) 2005-02-16

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ES200200306A Expired - Fee Related ES2197796B1 (en) 2002-01-31 2002-01-31 CHARACTERIZATION SYSTEM OF RESISTANT CRYSTAL SENSORS IN FLUID MEDIA, AND CALIBRATION AND COMPENSATION PROCEDURE OF THE QUARTZ CRYSTAL CAPACITY.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010149811A1 (en) 2009-06-23 2010-12-29 Universidad Politécnica De Valencia Method and device for nanogravimetry in fluid media using piezoelectric resonators

Citations (4)

* 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
WO1996035103A1 (en) * 1995-05-04 1996-11-07 Michael Rodahl A piezoelectric crystal microbalance device
ES2153740A1 (en) * 1998-07-08 2001-03-01 Univ Valencia Politecnica System for compensating the effects of viscous friction in the measurement of the resonance frequency in a piezometric crystal in a liquid

Patent Citations (4)

* 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
WO1996035103A1 (en) * 1995-05-04 1996-11-07 Michael Rodahl A piezoelectric crystal microbalance device
ES2153740A1 (en) * 1998-07-08 2001-03-01 Univ Valencia Politecnica System for compensating the effects of viscous friction in the measurement of the resonance frequency in a piezometric crystal in a liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010149811A1 (en) 2009-06-23 2010-12-29 Universidad Politécnica De Valencia Method and device for nanogravimetry in fluid media using piezoelectric resonators

Also Published As

Publication number Publication date
ES2197796B1 (en) 2005-02-16

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