GB776861A - Improvements relating to methods of and means for measuring current density - Google Patents

Improvements relating to methods of and means for measuring current density

Info

Publication number
GB776861A
GB776861A GB3355753A GB3355753A GB776861A GB 776861 A GB776861 A GB 776861A GB 3355753 A GB3355753 A GB 3355753A GB 3355753 A GB3355753 A GB 3355753A GB 776861 A GB776861 A GB 776861A
Authority
GB
United Kingdom
Prior art keywords
liquid
cores
conducting
windings
current
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
GB3355753A
Inventor
Harold Kenneth Moneypenny
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.)
GKN Group Services Ltd
Original Assignee
GKN Group Services 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 GKN Group Services Ltd filed Critical GKN Group Services Ltd
Priority to GB3355753A priority Critical patent/GB776861A/en
Publication of GB776861A publication Critical patent/GB776861A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/08—Measuring current density

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

776,861. Electric measurements. G.K.N. GROUP SERVICES, Ltd. Dec. 3, 1954 [Dec. 3, 1953], No. 33557/53. Class 37. [Also in Group XXXIX] Apparatus for measuring the current density in a conductive liquid, e.g. the electrolyte of a plating process, comprises two similar toroidal coils 14, 15 (Fig. 1), wound on coaxial, highpermeability cores 10, 11, and jointly coupled by a short-circuiting winding 19 and a D.C.- fed winding 20, whereby the change in impedance in the windings 14, 15 connected in series opposition when immersed in the conducting liquid due to the polarizing effect of the liquid current 13 through the middle 12 of the cores 10, 11 is balanced out by a measured current through the winding 20, which is a measure of the liquid current 13. The impedance of windings 14, 15 is measured in a bridge circuit (Fig. 3) by comparison with similar coils 14a, 15a on similar cores 10a, 11a, initial balance being effected outside the conducting liquid by adjustment of potentiometer R5, subsequent rebalance in the liquid being obtained by adjustment of potentiometers R6, R7 controlling the D.C. through coil 20. The assembly of cores 10, 11 and windings 14, 15, 19, 20 is enclosed in a non-magnetic, non- conducting sheath, e.g. polythene, and the apparatus may be used with any conducting fluid.
GB3355753A 1953-12-03 1953-12-03 Improvements relating to methods of and means for measuring current density Expired GB776861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3355753A GB776861A (en) 1953-12-03 1953-12-03 Improvements relating to methods of and means for measuring current density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3355753A GB776861A (en) 1953-12-03 1953-12-03 Improvements relating to methods of and means for measuring current density

Publications (1)

Publication Number Publication Date
GB776861A true GB776861A (en) 1957-06-12

Family

ID=10354487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3355753A Expired GB776861A (en) 1953-12-03 1953-12-03 Improvements relating to methods of and means for measuring current density

Country Status (1)

Country Link
GB (1) GB776861A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275298B (en) * 1960-10-26 1968-08-14 Itt Ind Ges Mit Beschraenkter Arrangement for measuring and regulating a size of an electrically conductive object which influences the inductive coupling between induction coils
US3419796A (en) * 1963-03-04 1968-12-31 Bissett Berman Corp Compensated salinometer
GB2122759A (en) * 1982-06-17 1984-01-18 British Nuclear Fuels Ltd Probe for measuring conductivity of a fluid
WO1991011708A1 (en) * 1990-01-24 1991-08-08 Rosemount Inc. Electrodeless conductivity sensor with inflatable surface

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275298B (en) * 1960-10-26 1968-08-14 Itt Ind Ges Mit Beschraenkter Arrangement for measuring and regulating a size of an electrically conductive object which influences the inductive coupling between induction coils
US3419796A (en) * 1963-03-04 1968-12-31 Bissett Berman Corp Compensated salinometer
GB2122759A (en) * 1982-06-17 1984-01-18 British Nuclear Fuels Ltd Probe for measuring conductivity of a fluid
WO1991011708A1 (en) * 1990-01-24 1991-08-08 Rosemount Inc. Electrodeless conductivity sensor with inflatable surface
US5077525A (en) * 1990-01-24 1991-12-31 Rosemount Inc. Electrodeless conductivity sensor with inflatable surface

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