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FI20085009A0 - Apparatus and coil arrangement for measuring magnetic particles and the like - Google Patents

Apparatus and coil arrangement for measuring magnetic particles and the like

Info

Publication number
FI20085009A0
FI20085009A0 FI20085009A FI20085009A FI20085009A0 FI 20085009 A0 FI20085009 A0 FI 20085009A0 FI 20085009 A FI20085009 A FI 20085009A FI 20085009 A FI20085009 A FI 20085009A FI 20085009 A0 FI20085009 A0 FI 20085009A0
Authority
FI
Finland
Prior art keywords
magnetic particles
coil arrangement
measuring magnetic
coils
operate
Prior art date
Application number
FI20085009A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20085009A7 (en
FI20085009L (en
Inventor
Jarmo Verho
Original Assignee
Magnasense Oy
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 FI20075378A external-priority patent/FI20075378A0/en
Application filed by Magnasense Oy filed Critical Magnasense Oy
Priority to FI20085009A priority Critical patent/FI20085009L/en
Publication of FI20085009A0 publication Critical patent/FI20085009A0/en
Priority to PCT/FI2008/050297 priority patent/WO2008145813A1/en
Publication of FI20085009A7 publication Critical patent/FI20085009A7/en
Publication of FI20085009L publication Critical patent/FI20085009L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/1269—Measuring magnetic properties of articles or specimens of solids or fluids of molecules labeled with magnetic beads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The invention relates to device for the qualitative or quantitative measurement of magnetic particles, which device (10) includes a coil arrangement (20 - 23), arranged to form an inductance bridge (19), of which coils (20, 21) at least two are arranged to operate as a measuring part (17), on which the magnetic particles (12) to be measured are arrangeable to act simultaneously, and part of which coil arrangement (20 - 23) is arranged to operate as a reference/compensation part (18), and from the signal of which coil arrangement (20 - 23) a change of inductance correlating to the number of magnetic particles is arranged to be detected. The coils of the measuring part are arranged in an axial arrangement relative to each other.
FI20085009A 2007-05-25 2008-01-07 Apparatus and coil arrangement for measuring magnetic particles and corresponding method FI20085009L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20085009A FI20085009L (en) 2007-05-25 2008-01-07 Apparatus and coil arrangement for measuring magnetic particles and corresponding method
PCT/FI2008/050297 WO2008145813A1 (en) 2007-05-25 2008-05-23 Device and coil arrangement for measuring magnetic particles and corresponding method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20075378A FI20075378A0 (en) 2007-05-25 2007-05-25 Apparatus for measuring magnetic particles and the like
FI20085009A FI20085009L (en) 2007-05-25 2008-01-07 Apparatus and coil arrangement for measuring magnetic particles and corresponding method

Publications (3)

Publication Number Publication Date
FI20085009A0 true FI20085009A0 (en) 2008-01-07
FI20085009A7 FI20085009A7 (en) 2008-11-26
FI20085009L FI20085009L (en) 2008-11-26

Family

ID=39004309

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20085009A FI20085009L (en) 2007-05-25 2008-01-07 Apparatus and coil arrangement for measuring magnetic particles and corresponding method

Country Status (2)

Country Link
FI (1) FI20085009L (en)
WO (1) WO2008145813A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9880118B2 (en) 2011-05-12 2018-01-30 The Trustees Of Dartmouth College Planar Probe and system for measuring dielectric properties of biological materials
JP6210358B2 (en) * 2013-03-26 2017-10-11 Smc株式会社 Displacement sensor
DE102013109467A1 (en) * 2013-08-30 2015-03-05 MRB Forschungszentrum für Magnet - Resonanz - Bayern e.V. Method and device for analyzing a sample volume comprising magnetic particles
DE102015008516B4 (en) * 2015-06-30 2017-02-16 Testo Ag Measuring arrangement and method for non-contact current measurement
CN115901562A (en) * 2022-12-29 2023-04-04 瑞得设备科技(江苏)有限公司 High-precision magnetic plug type abrasive particle sensor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07248676A (en) * 1994-03-09 1995-09-26 Konica Corp Toner density detecting device
JPH08101167A (en) * 1994-09-30 1996-04-16 Tokyo Gas Co Ltd Nondestructive inspection sensor and manufacturing method thereof
US6437563B1 (en) * 1997-11-21 2002-08-20 Quantum Design, Inc. Method and apparatus for making measurements of accumulations of magnetically susceptible particles combined with analytes
US6873152B2 (en) * 2002-12-30 2005-03-29 General Electric Company Differential sensor apparatus and method for laminated core fault detection
GB0410976D0 (en) * 2004-05-17 2004-06-16 Randox Lab Ltd Magnetic particle detector system

Also Published As

Publication number Publication date
FI20085009A7 (en) 2008-11-26
FI20085009L (en) 2008-11-26
WO2008145813A1 (en) 2008-12-04

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Legal Events

Date Code Title Description
FD Application lapsed