FR2404829A1 - Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements - Google Patents

Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements

Info

Publication number
FR2404829A1
FR2404829A1 FR7729885A FR7729885A FR2404829A1 FR 2404829 A1 FR2404829 A1 FR 2404829A1 FR 7729885 A FR7729885 A FR 7729885A FR 7729885 A FR7729885 A FR 7729885A FR 2404829 A1 FR2404829 A1 FR 2404829A1
Authority
FR
France
Prior art keywords
linear movement
differential transformer
probe shaft
acts
displacement sensor
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.)
Granted
Application number
FR7729885A
Other languages
French (fr)
Other versions
FR2404829B1 (en
Inventor
Jacques Dauchaud
Andre Jeambrun
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 FR7729885A priority Critical patent/FR2404829A1/en
Publication of FR2404829A1 publication Critical patent/FR2404829A1/en
Application granted granted Critical
Publication of FR2404829B1 publication Critical patent/FR2404829B1/fr
Granted 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
    • G01D5/22—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
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/001—Constructional details of gauge heads

Abstract

The miniature sensor of the magnetic type with differential transformer is used to detect linear movement or to act as mechanical comparator for measuring thickness. The sensor comprises soft iron cylindrical sleeve with a non-magnetic central part with concentric cylindrical surfaces ensuring centring of rear support. The front end with cylindrical exterior ensures centring to form coaxial assembly. The probe shaft enters the central assembly where it has a magnetic section acting as core to coils and which remains within the coil area when probe point is displaced.
FR7729885A 1977-09-28 1977-09-28 Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements Granted FR2404829A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7729885A FR2404829A1 (en) 1977-09-28 1977-09-28 Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7729885A FR2404829A1 (en) 1977-09-28 1977-09-28 Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements

Publications (2)

Publication Number Publication Date
FR2404829A1 true FR2404829A1 (en) 1979-04-27
FR2404829B1 FR2404829B1 (en) 1981-04-17

Family

ID=9196102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7729885A Granted FR2404829A1 (en) 1977-09-28 1977-09-28 Differential transformer type miniature magnetic displacement sensor - has probe shaft and detects linear movement or acts as mechanical comparator for thickness measurements

Country Status (1)

Country Link
FR (1) FR2404829A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031658A2 (en) * 1979-12-15 1981-07-08 System E Controls Limited Variable inductance transducers
FR2566522A1 (en) * 1984-06-25 1985-12-27 Commissariat Energie Atomique Mechanical sensor for dimensional measurement
EP2631592A1 (en) * 2012-02-21 2013-08-28 Breitmeier Messtechnik GmbH Measuring device and method for measuring the surface micro structure profile or the roughness of the surface of a body

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583791A (en) * 1945-09-27 1952-01-29 Jack & Heintz Prec Ind Inc Electronic comparator
FR1266959A (en) * 1960-09-08 1961-07-17 Control device for electric measuring probe
CH406654A (en) * 1964-02-05 1966-01-31 Degoumois Gerald Comparator
DE2013639B1 (en) * 1970-03-21 1971-05-19 Aristo Werke Dennert & Pape Kg Sensor arrangement
DE2207270A1 (en) * 1971-03-01 1972-09-14 Far Fab Assortiments Reunies Device for the simultaneous transmission of the movement of a button to at least two reading elements
DE2331113B1 (en) * 1973-06-19 1974-02-07 W.C. Heraeus Gmbh, 6450 Hanau Dilatometer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583791A (en) * 1945-09-27 1952-01-29 Jack & Heintz Prec Ind Inc Electronic comparator
FR1266959A (en) * 1960-09-08 1961-07-17 Control device for electric measuring probe
CH406654A (en) * 1964-02-05 1966-01-31 Degoumois Gerald Comparator
DE2013639B1 (en) * 1970-03-21 1971-05-19 Aristo Werke Dennert & Pape Kg Sensor arrangement
DE2207270A1 (en) * 1971-03-01 1972-09-14 Far Fab Assortiments Reunies Device for the simultaneous transmission of the movement of a button to at least two reading elements
DE2331113B1 (en) * 1973-06-19 1974-02-07 W.C. Heraeus Gmbh, 6450 Hanau Dilatometer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031658A2 (en) * 1979-12-15 1981-07-08 System E Controls Limited Variable inductance transducers
EP0031658A3 (en) * 1979-12-15 1981-07-15 System E Controls Limited Variable inductance transducers
FR2566522A1 (en) * 1984-06-25 1985-12-27 Commissariat Energie Atomique Mechanical sensor for dimensional measurement
EP2631592A1 (en) * 2012-02-21 2013-08-28 Breitmeier Messtechnik GmbH Measuring device and method for measuring the surface micro structure profile or the roughness of the surface of a body
WO2013123932A1 (en) * 2012-02-21 2013-08-29 Breitmeier Messtechnik Gmbh Measurement device and method for measuring the surface microstructure profile or the roughness of a surface of a body

Also Published As

Publication number Publication date
FR2404829B1 (en) 1981-04-17

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Legal Events

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ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse