GB969001A - Improved inductive sensing apparatus - Google Patents

Improved inductive sensing apparatus

Info

Publication number
GB969001A
GB969001A GB3588560A GB3588560A GB969001A GB 969001 A GB969001 A GB 969001A GB 3588560 A GB3588560 A GB 3588560A GB 3588560 A GB3588560 A GB 3588560A GB 969001 A GB969001 A GB 969001A
Authority
GB
United Kingdom
Prior art keywords
coils
meter
coupling
vane
change
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
GB3588560A
Inventor
James Frances Sullivan
Vincent Joseph Lique
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.)
INTERNATIONAL INSTRUMENTS Inc
Original Assignee
INTERNATIONAL INSTRUMENTS Inc
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 INTERNATIONAL INSTRUMENTS Inc filed Critical INTERNATIONAL INSTRUMENTS Inc
Priority to GB3588560A priority Critical patent/GB969001A/en
Publication of GB969001A publication Critical patent/GB969001A/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
    • G01D5/2053—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 non-ferromagnetic conductive element
    • 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
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22—Pointers, e.g. settable pointer
    • G01D13/26—Pointers, e.g. settable pointer adapted to perform a further operation, e.g. making electrical contact

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

969,001. Locating conductive and magnetic bodies. INTERNATIONAL INSTRUMENTS Inc. Oct. 19, 1960, No. 35885/60. Heading G1N. In an induction sensing arrangement responsive to the change of coupling between coils, an amplifier connected to the pick-up coil produces maximum output when the induced electrical energy is decreased. In an indicating meter an aluminium vane 45 carried by pointer 27 is arranged to change the coupling between coils L1, L3, L2, L4 when it passes between them. The coils are mounted on arms 61, the angles of which may preset by external levers 47, 49 and the ends of the arm are bent over at 63 to read against an end scale. Zero adjustment is provided on the meter, and the indicator is counter balanced. Coils L1, L2 Fig. 3 are connected in the tank circuit of a transistor Colpitts oscillator TR1, and the signals received in coils L3, L4 in the absence of the vane, when rectified, cut off transistors TR2, TR3 by setting up a positive potential on the bases thereof in opposition to the negative battery. An output signal is thus generated when the meter reads a desired upper or lower value.
GB3588560A 1960-10-19 1960-10-19 Improved inductive sensing apparatus Expired GB969001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3588560A GB969001A (en) 1960-10-19 1960-10-19 Improved inductive sensing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3588560A GB969001A (en) 1960-10-19 1960-10-19 Improved inductive sensing apparatus

Publications (1)

Publication Number Publication Date
GB969001A true GB969001A (en) 1964-09-09

Family

ID=10382614

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3588560A Expired GB969001A (en) 1960-10-19 1960-10-19 Improved inductive sensing apparatus

Country Status (1)

Country Link
GB (1) GB969001A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237395A (en) * 1989-10-13 1991-05-01 Polar Refrigeration Services Weighing device
FR2844351A1 (en) * 2002-09-05 2004-03-12 Denso Corp Needle position detection device for detecting the position of the needle of a motor vehicle speedometer or tachometer display, said detection device having a magnetic operating mode so that it is insensitive to dirt or oxidation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237395A (en) * 1989-10-13 1991-05-01 Polar Refrigeration Services Weighing device
GB2237395B (en) * 1989-10-13 1994-02-09 Polar Refrigeration Services Safety and weighing device particularly for gas bottles
FR2844351A1 (en) * 2002-09-05 2004-03-12 Denso Corp Needle position detection device for detecting the position of the needle of a motor vehicle speedometer or tachometer display, said detection device having a magnetic operating mode so that it is insensitive to dirt or oxidation

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