WO2002018908A3 - Single riser/single capillary viscometer using mass detection or column height detection - Google Patents

Single riser/single capillary viscometer using mass detection or column height detection Download PDF

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Publication number
WO2002018908A3
WO2002018908A3 PCT/US2001/025007 US0125007W WO0218908A3 WO 2002018908 A3 WO2002018908 A3 WO 2002018908A3 US 0125007 W US0125007 W US 0125007W WO 0218908 A3 WO0218908 A3 WO 0218908A3
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
riser
detection
viscosity
movement
Prior art date
Application number
PCT/US2001/025007
Other languages
French (fr)
Other versions
WO2002018908A2 (en
Inventor
Kenneth Kensey
William N Hogenauer
Young Cho
Sehyun Shin
Sangho Kim
Original Assignee
Rheologics Inc
Kenneth Kensey
William N Hogenauer
Young Cho
Sehyun Shin
Sangho Kim
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
Priority claimed from US09/789,350 external-priority patent/US20010039828A1/en
Application filed by Rheologics Inc, Kenneth Kensey, William N Hogenauer, Young Cho, Sehyun Shin, Sangho Kim filed Critical Rheologics Inc
Priority to AU2001281219A priority Critical patent/AU2001281219A1/en
Publication of WO2002018908A2 publication Critical patent/WO2002018908A2/en
Publication of WO2002018908A3 publication Critical patent/WO2002018908A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/02028—Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction
    • A61B5/02035—Determining blood viscosity
    • 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
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • 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
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid

Abstract

An apparatus and method for determining the viscosity of a fluid over plural shear rates caused by a decreasing pressure differential by monitoring the movement of the fluid through a riser tube (R) and a capillary tube (24). The movement can be monitored by detecting the changing weight of the fluid, using a precision balance or load cell (28), as it moves through the riser tube and capillary tube into a fluid collector (26); or, alternatively, the movement can be monitored by detecting the changing level of a fluid column in the riser tube using a column level detector. A processor then uses the changing weight or height data, along with the dimensions of the capillary tube and a dimension of the riser tube, to determine the viscosity of the fluid. In addition, apparatus and methods for determining fluid viscosity online and fluid mixture homogeneity online are also described.
PCT/US2001/025007 2000-08-28 2001-08-09 Single riser/single capillary viscometer using mass detection or column height detection WO2002018908A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001281219A AU2001281219A1 (en) 2000-08-28 2001-08-09 Single riser/single capillary viscometer using mass detection or column height detection

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US22861200P 2000-08-28 2000-08-28
US60/228,612 2000-08-29
US09/789,350 US20010039828A1 (en) 1999-11-12 2001-02-21 Mass detection capillary viscometer
US09/789,350 2001-02-21
US09/897,164 US6484565B2 (en) 1999-11-12 2001-07-02 Single riser/single capillary viscometer using mass detection or column height detection
US09/897,164 2001-07-02

Publications (2)

Publication Number Publication Date
WO2002018908A2 WO2002018908A2 (en) 2002-03-07
WO2002018908A3 true WO2002018908A3 (en) 2003-02-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/025007 WO2002018908A2 (en) 2000-08-28 2001-08-09 Single riser/single capillary viscometer using mass detection or column height detection

Country Status (3)

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US (4) US6484565B2 (en)
AU (1) AU2001281219A1 (en)
WO (1) WO2002018908A2 (en)

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Also Published As

Publication number Publication date
US20020007664A1 (en) 2002-01-24
US20030005752A1 (en) 2003-01-09
WO2002018908A2 (en) 2002-03-07
US6796168B1 (en) 2004-09-28
US20020184941A1 (en) 2002-12-12
US6484565B2 (en) 2002-11-26
US6571608B2 (en) 2003-06-03
US6523396B2 (en) 2003-02-25
AU2001281219A1 (en) 2002-03-13

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