GB1236071A - Magnetic flux-activated control - Google Patents

Magnetic flux-activated control

Info

Publication number
GB1236071A
GB1236071A GB1256668A GB1256668A GB1236071A GB 1236071 A GB1236071 A GB 1236071A GB 1256668 A GB1256668 A GB 1256668A GB 1256668 A GB1256668 A GB 1256668A GB 1236071 A GB1236071 A GB 1236071A
Authority
GB
United Kingdom
Prior art keywords
flux
magnetic
gap
measured
impedance
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.)
Expired
Application number
GB1256668A
Inventor
Otto Henry Zinke
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1256668A priority Critical patent/GB1236071A/en
Publication of GB1236071A publication Critical patent/GB1236071A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G01D5/2258—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/16—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in the magnetic properties of material resulting from the application of stress
    • 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
    • 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
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1,236,071. Magnetic tests; measuring non- electric variables; radiation detectors. O. H. ZINKE. March 14, 1968, No. 12566/68. Headings G1A and G1N, A magnetic flux bridge comprises two ferromagnetic circuit members arranged to provide two magnetically parallel flux circuits with a section of one member being common to both flux circuits and coupled with an A.C. energizing winding and a section of the other member forming a connection between the parallel flux circuits and being coupled with a pick up winding or other flux detection means. As shown in Fig. 1, two H-shaped members of soft iron or ferrite are arranged with their centre sections at right angles and four flux impedance elements C12-15 are disposed in respective airgaps between the members. In Fig. 7, one member is C-shaped and the other is a folded H. In another arrangement Fig. 5 (not shown) two X-shaped members are used. Applications. The magnetic and electric properties of specimen in one air-gap may be compared with those of a standard in the other air-gap of the same flux circuit or an air-gap in the other flux circuit. To measure temperature, any material having an electrical conductivity or magnetic permeability that changes with temperature may be used as one of the flux impedance elements. To measure fluid-pressure or flowrate, the element may be heated, the rate of cooling and hence the temperature and resistance of the element depending on the pressure and/or flowrate of the fluid. A radiation detector may be formed using a detector element of blackened aluminium foil. Strain may be measured using a flux impedance element which changes its electric or magnetic properties in response to strain. The thickness of conductive material may be measured by comparing its impedance with that of a standard in another arm of the bridge. Movements of one of the flux impedance elements may be measured. Normally, operation would be below saturation, but the possibility of saturating the magnetic material is mentioned. A D. C. flux may be superposed on the A. C. flux. Amplitude and phase measurements may be made. Instead of a pick up coil, an attraction armature may be used to sense bridge unbalance.
GB1256668A 1968-03-14 1968-03-14 Magnetic flux-activated control Expired GB1236071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1256668A GB1236071A (en) 1968-03-14 1968-03-14 Magnetic flux-activated control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1256668A GB1236071A (en) 1968-03-14 1968-03-14 Magnetic flux-activated control

Publications (1)

Publication Number Publication Date
GB1236071A true GB1236071A (en) 1971-06-16

Family

ID=10007010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256668A Expired GB1236071A (en) 1968-03-14 1968-03-14 Magnetic flux-activated control

Country Status (1)

Country Link
GB (1) GB1236071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656087A1 (en) * 1989-12-14 1991-06-21 Commissariat Energie Atomique INDUCTIVE SENSOR AND DEVICES FOR MEASURING THE DISPLACEMENT OF A MOBILE ORGAN.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656087A1 (en) * 1989-12-14 1991-06-21 Commissariat Energie Atomique INDUCTIVE SENSOR AND DEVICES FOR MEASURING THE DISPLACEMENT OF A MOBILE ORGAN.
EP0441074A2 (en) * 1989-12-14 1991-08-14 Commissariat A L'energie Atomique Inductive sensor and device for measuring displacements of a movable object
EP0441074A3 (en) * 1989-12-14 1991-09-25 Commissariat A L'energie Atomique Inductive sensor and device for measuring displacements of a movable object
US5117181A (en) * 1989-12-14 1992-05-26 Commissariat A L'energie Atomique Inductive transducer with calibrating balancing core for measuring movement of an object

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