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)Info
- 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
- Authority
- ES
- Spain
- Prior art keywords
- quartz crystal
- compensation
- sensor
- calibration
- translation
- 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
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
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)
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 |
Family
ID=30470524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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. |
Country Status (1)
Country | Link |
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ES (1) | ES2197796B1 (en) |
Cited By (1)
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)
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 |
-
2002
- 2002-01-31 ES ES200200306A patent/ES2197796B1/en not_active Expired - Fee Related
Patent Citations (4)
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)
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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