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WO2002090941A3 - Viscosity sensor - Google Patents

Viscosity sensor Download PDF

Info

Publication number
WO2002090941A3
WO2002090941A3 PCT/GB2002/002044 GB0202044W WO02090941A3 WO 2002090941 A3 WO2002090941 A3 WO 2002090941A3 GB 0202044 W GB0202044 W GB 0202044W WO 02090941 A3 WO02090941 A3 WO 02090941A3
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
vibrating
reed
viscosity
monitored
Prior art date
Application number
PCT/GB2002/002044
Other languages
French (fr)
Other versions
WO2002090941A2 (en
Inventor
Christopher John Collister
Original Assignee
Lubrishield Ltd
Christopher John Collister
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 Lubrishield Ltd, Christopher John Collister filed Critical Lubrishield Ltd
Publication of WO2002090941A2 publication Critical patent/WO2002090941A2/en
Publication of WO2002090941A3 publication Critical patent/WO2002090941A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/16—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/30—Oils, i.e. hydrocarbon liquids for lubricating properties

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Viscosity of a viscous fluid is monitored by vibrating a first surface (1) in close proximity to an adjacent surface (4) along an axis to vary the spacing between said surfaces so that the fluid between the surfaces flows laterally of said axis and exerts a shear wave force on the vibrating surface. Displacement of the vibrating surface (1) is monitored to derive a displacement signal, from which a value of the viscosity of the fluid is derived. The vibrating surface (1) comprises a reed such as a diaphragm or a cantilevered beam or wire. The vibrating surface (1) and adjacent surface (4) may be electronically conductive and form a capacitor with said fluid, the capacitance of which varies with vibration of the reed and creates an amplitude modulation in the displacement signal. A second reed (42) may be immersed in a reference fluid and the ratio of the viscosities of the two fluids measured.
PCT/GB2002/002044 2001-05-04 2002-05-07 Viscosity sensor WO2002090941A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0111041A GB0111041D0 (en) 2001-05-04 2001-05-04 Viscosity sensor
GB0111041.0 2001-05-04

Publications (2)

Publication Number Publication Date
WO2002090941A2 WO2002090941A2 (en) 2002-11-14
WO2002090941A3 true WO2002090941A3 (en) 2003-03-27

Family

ID=9914091

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002044 WO2002090941A2 (en) 2001-05-04 2002-05-07 Viscosity sensor

Country Status (2)

Country Link
GB (1) GB0111041D0 (en)
WO (1) WO2002090941A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004011549T2 (en) * 2004-12-22 2008-05-21 C.R.F. S.C.P.A. Miniaturized sensor for detecting properties of a liquid, in particular a lubricating oil
US8640528B2 (en) 2009-01-28 2014-02-04 Aktiebolaget Skf Lubrication condition monitoring
CN106950155B (en) * 2017-05-23 2024-05-28 甘肃瑞峰伟业电子科技有限公司 Cross Newtonian liquid viscosity stress sensor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126931A (en) * 1983-01-12 1984-07-21 Nippon Soken Inc Measuring device of characteristic of fluid
JPH03202748A (en) * 1989-12-29 1991-09-04 Sumitomo Metal Ind Ltd Vibrating-reed type viscosity measuring method
US5253513A (en) * 1991-11-08 1993-10-19 University Of Houston Device for determining viscoelastic properties of liquids and a method for use
US5710374A (en) * 1995-04-06 1998-01-20 University Of Virginia Patent Foundation Electronic viscometer
DE19804326A1 (en) * 1998-02-04 1999-08-05 Bosch Gmbh Robert Sensor especially for measuring the viscosity and density of a liquid or gas
WO2001022057A1 (en) * 1999-09-23 2001-03-29 Ut-Battelle, Llc Viscosity measuring using microcantilevers
US20010045122A1 (en) * 2000-05-26 2001-11-29 Rudolf Ehwald Method and apparatus for measuring viscosity

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126931A (en) * 1983-01-12 1984-07-21 Nippon Soken Inc Measuring device of characteristic of fluid
JPH03202748A (en) * 1989-12-29 1991-09-04 Sumitomo Metal Ind Ltd Vibrating-reed type viscosity measuring method
US5253513A (en) * 1991-11-08 1993-10-19 University Of Houston Device for determining viscoelastic properties of liquids and a method for use
US5710374A (en) * 1995-04-06 1998-01-20 University Of Virginia Patent Foundation Electronic viscometer
DE19804326A1 (en) * 1998-02-04 1999-08-05 Bosch Gmbh Robert Sensor especially for measuring the viscosity and density of a liquid or gas
WO2001022057A1 (en) * 1999-09-23 2001-03-29 Ut-Battelle, Llc Viscosity measuring using microcantilevers
US20010045122A1 (en) * 2000-05-26 2001-11-29 Rudolf Ehwald Method and apparatus for measuring viscosity

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANDREWS M ET AL: "A COMPARISON OF SQUEEZE-FILM THEORY WITH MEASUREMENTS ON A MICROSTRUCTURE", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. A36, no. 1, 1 March 1993 (1993-03-01), pages 79 - 87, XP000368520, ISSN: 0924-4247 *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 257 (P - 316) 24 November 1984 (1984-11-24) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 471 (P - 1282) 28 November 1991 (1991-11-28) *

Also Published As

Publication number Publication date
GB0111041D0 (en) 2001-06-27
WO2002090941A2 (en) 2002-11-14

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