GB589442A - Improvements in electromagnetic measuring apparatus - Google Patents

Improvements in electromagnetic measuring apparatus

Info

Publication number
GB589442A
GB589442A GB21162/44A GB2116244A GB589442A GB 589442 A GB589442 A GB 589442A GB 21162/44 A GB21162/44 A GB 21162/44A GB 2116244 A GB2116244 A GB 2116244A GB 589442 A GB589442 A GB 589442A
Authority
GB
United Kingdom
Prior art keywords
transformer
variations
oct
displacement
rod
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
GB21162/44A
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
Publication of GB589442A publication Critical patent/GB589442A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/204—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 by influencing the mutual induction between two or more coils
    • G01D5/2046—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 by influencing the mutual induction between two or more coils by a movable ferromagnetic element, e.g. a core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

589,442. Magnetic tests and measurements. PANDEL, M. Oct. 30, 1944, No. 21162. Convention date, Oct. 29, 1943. [Class 37] An apparatus for measuring variations in the thickness of materials, comprises a rod 28 which is brought into contact with the surface of a body under test. Irregularities of this surface produce a displacement of rod 28 which, by means of a member 27, three rods 26, and a cylinder 25, actuates a movable part 24 of the core of an energized transformer. Displacement of the movable part 24 produces variations of reluctance in the magnetic circuit of the transformer and, consequently, produces a deflection of a galvanometer, connected across the secondary winding 23 of the transformer, proportional to, the variations of the dimensions of the specimen under test.
GB21162/44A 1943-10-29 1944-10-30 Improvements in electromagnetic measuring apparatus Expired GB589442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH589442X 1943-10-29

Publications (1)

Publication Number Publication Date
GB589442A true GB589442A (en) 1947-06-20

Family

ID=4522046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21162/44A Expired GB589442A (en) 1943-10-29 1944-10-30 Improvements in electromagnetic measuring apparatus

Country Status (1)

Country Link
GB (1) GB589442A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449673A1 (en) * 1973-10-25 1975-04-30 Finike Italiana Marposs DIRECT TOUCHING GAUGE FOR MEASURING MOVING WORKPIECES WITH AT LEAST ONE SENSOR
FR2670285A1 (en) * 1990-12-07 1992-06-12 Schlumberger Ind Sa METHOD AND DEVICE FOR DETECTING A DISPLACEMENT.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449673A1 (en) * 1973-10-25 1975-04-30 Finike Italiana Marposs DIRECT TOUCHING GAUGE FOR MEASURING MOVING WORKPIECES WITH AT LEAST ONE SENSOR
FR2670285A1 (en) * 1990-12-07 1992-06-12 Schlumberger Ind Sa METHOD AND DEVICE FOR DETECTING A DISPLACEMENT.
EP0490710A1 (en) * 1990-12-07 1992-06-17 Schlumberger Industries Method and device for the detection of a displacement

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