GB903171A - Improvements relating to electrical measuring apparatus - Google Patents

Improvements relating to electrical measuring apparatus

Info

Publication number
GB903171A
GB903171A GB317858A GB317858A GB903171A GB 903171 A GB903171 A GB 903171A GB 317858 A GB317858 A GB 317858A GB 317858 A GB317858 A GB 317858A GB 903171 A GB903171 A GB 903171A
Authority
GB
United Kingdom
Prior art keywords
displacement
coil
phase
fixed coils
jan
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
GB317858A
Inventor
Hugh Simpson
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB317858A priority Critical patent/GB903171A/en
Publication of GB903171A publication Critical patent/GB903171A/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
    • G01D5/22—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

Landscapes

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

Abstract

903,171. Measuring electrically. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 21, 1959 [Jan. 30, 1958], No. 3178/58. Class 40 (1). A displacement transducer comprises a coil movable, with the member whose displacement is to be measured, in an alternating magnetic field having a field strength which varies substantially linearly along the displacement path, and means for indicating the voltage induced in the coil. As shown, Fig. 1, the movable coil 3, which may have an iron core, is displaced along the common axis of two fixed coils 1, 2, each of which has a progressively increasing winding density from its inner end to its outer end, the fixed coils being connected differentially to an A.C. source so that a zero field exists midway between them. Displacement of the coil 3 from the null position produces a signal, the phase and magnitude of which are indicative of the direction and extent of the displacement, the signal being passed, via a phase-sensitive network 5, Fig. 2, to a voltmeter. If displacement on one side only of the datum is required, one of the fixed coils provides a uniform field and the phase-sensitive network is dispensed with.
GB317858A 1958-01-30 1958-01-30 Improvements relating to electrical measuring apparatus Expired GB903171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB317858A GB903171A (en) 1958-01-30 1958-01-30 Improvements relating to electrical measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB317858A GB903171A (en) 1958-01-30 1958-01-30 Improvements relating to electrical measuring apparatus

Publications (1)

Publication Number Publication Date
GB903171A true GB903171A (en) 1962-08-15

Family

ID=9753407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB317858A Expired GB903171A (en) 1958-01-30 1958-01-30 Improvements relating to electrical measuring apparatus

Country Status (1)

Country Link
GB (1) GB903171A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479582A (en) * 1966-11-16 1969-11-18 Philips Corp Arrangement for touch-free measurement of displacements
EP0338966A2 (en) * 1988-01-22 1989-10-25 Data Instruments Inc. Position compensation winding for displacement transducer
US4926123A (en) * 1988-01-22 1990-05-15 Sunpower, Inc. Precision variable pitch compensation winding for displacement transducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479582A (en) * 1966-11-16 1969-11-18 Philips Corp Arrangement for touch-free measurement of displacements
EP0338966A2 (en) * 1988-01-22 1989-10-25 Data Instruments Inc. Position compensation winding for displacement transducer
US4926123A (en) * 1988-01-22 1990-05-15 Sunpower, Inc. Precision variable pitch compensation winding for displacement transducer
EP0338966B1 (en) * 1988-01-22 1994-12-28 Data Instruments Inc. Position compensation winding for displacement transducer

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