GB1163105A - A Method of and Apparatus for Measuring Surface Resistivity - Google Patents

A Method of and Apparatus for Measuring Surface Resistivity

Info

Publication number
GB1163105A
GB1163105A GB52849/66A GB5284966A GB1163105A GB 1163105 A GB1163105 A GB 1163105A GB 52849/66 A GB52849/66 A GB 52849/66A GB 5284966 A GB5284966 A GB 5284966A GB 1163105 A GB1163105 A GB 1163105A
Authority
GB
United Kingdom
Prior art keywords
resistivity
probe
proximity
surface resistivity
measuring surface
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
GB52849/66A
Inventor
Duc Tien Tran
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1163105A publication Critical patent/GB1163105A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

1,163,105. Measuring surface resistivity. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov.25, 1966 [Dec.3, 1965], No.52849/66. Headings G1N and G1U. 'To measure the surface resistivity of a metal at very high frequency a probe 5 incorporating an inductor is placed in proximity with the surface 7 while a reference probe 6 is placed in proximity with a surface of known resistivity. The inductors form parts of resonant circuits with capacitors 3, 4, and are connected in arms of a bridge system energized from a source 2 which supplies a frequency of several Mc/s. The bridge output is transformer coupled to an amplifier 9 and meter 11. The system is calibrated by using a surface of known resistivity in place of the surface 7. The inductive probe 5 incorporates an insulating block 17 with a flat coil 21 inserted in its end. An insulating end cap of defined thickness screws over the end. The apparatus may be used for testing welds.
GB52849/66A 1965-12-03 1966-11-25 A Method of and Apparatus for Measuring Surface Resistivity Expired GB1163105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40852A FR1466425A (en) 1965-12-03 1965-12-03 Resistivity meter

Publications (1)

Publication Number Publication Date
GB1163105A true GB1163105A (en) 1969-09-04

Family

ID=8594309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52849/66A Expired GB1163105A (en) 1965-12-03 1966-11-25 A Method of and Apparatus for Measuring Surface Resistivity

Country Status (6)

Country Link
BE (1) BE689959A (en)
CH (1) CH466430A (en)
ES (1) ES334056A1 (en)
FR (1) FR1466425A (en)
GB (1) GB1163105A (en)
LU (1) LU52464A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217860A (en) * 1988-04-30 1989-11-01 Leybold Ag Combined inductive/capacitive sensor for measurement of resistance of thin layers
GB2217859A (en) * 1988-04-30 1989-11-01 Leybold Ag Eddy current measurement of the resistance of thin layers
GB2225114A (en) * 1988-11-04 1990-05-23 Leonard Marmaduke Steele Determining physical parameters or properties of metallic samples using inductive techniques
US8931269B2 (en) 2009-06-18 2015-01-13 Rolls-Royce Plc Temperature activatable actuator
CN112114199A (en) * 2020-08-17 2020-12-22 国家电网有限公司 Method for measuring grounding resistance of transmission tower

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398632A (en) * 2019-08-23 2019-11-01 上海知白智能科技有限公司 A kind of resistance measurement fixture and resistance measurement method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217860A (en) * 1988-04-30 1989-11-01 Leybold Ag Combined inductive/capacitive sensor for measurement of resistance of thin layers
GB2217859A (en) * 1988-04-30 1989-11-01 Leybold Ag Eddy current measurement of the resistance of thin layers
DE3815009A1 (en) * 1988-04-30 1989-11-09 Leybold Ag DEVICE AND METHOD FOR NON-DESTRUCTION-FREE MEASUREMENT OF THE Ohmic RESISTANCE OF THIN LAYERS IN ACCORDANCE WITH THE Eddy Current Principle
DE3815010A1 (en) * 1988-04-30 1989-11-09 Leybold Ag CIRCUIT ARRANGEMENT FOR THE COMBINED USE OF AN INDUCTIVE AND A CAPACITIVE DEVICE FOR THE DESTRUCTION-FREE MEASUREMENT OF THE RESISTANT THIN LAYERS
US4958131A (en) * 1988-04-30 1990-09-18 Leybold Aktiengesellschaft Circuit arrangement for the combined application of an inductive and capacitative device for the non-destructive measurement of the ohmic resistance of thin layers
GB2217859B (en) * 1988-04-30 1992-09-09 Leybold Ag Apparatus and process for the non-contact measurement of the ohmic resistance of thin layers
GB2217860B (en) * 1988-04-30 1992-09-30 Leybold Ag Circuit arrangement for non-contact measurement of the ohmic resistance of thin layers
GB2225114A (en) * 1988-11-04 1990-05-23 Leonard Marmaduke Steele Determining physical parameters or properties of metallic samples using inductive techniques
US8931269B2 (en) 2009-06-18 2015-01-13 Rolls-Royce Plc Temperature activatable actuator
CN112114199A (en) * 2020-08-17 2020-12-22 国家电网有限公司 Method for measuring grounding resistance of transmission tower

Also Published As

Publication number Publication date
BE689959A (en) 1967-05-02
ES334056A1 (en) 1967-10-16
LU52464A1 (en) 1967-01-30
CH466430A (en) 1968-12-15
FR1466425A (en) 1967-01-20

Similar Documents

Publication Publication Date Title
DE2345848C3 (en) Electromagnetic coating thickness meter
US4188577A (en) Pulse eddy current testing apparatus for magnetic materials, particularly tubes
US2933677A (en) Probe for a thickness testing gage
GB1525310A (en) Method and apparatus for measuring the current flowing in a workpiece
US2226275A (en) Magnetic thickness gauge
IT8321637A1 (en) Non-contact high thickness gauge for metallic materials above the Curie temperature
US3441840A (en) Electronic thickness meter having direct readout of coating thickness
GB1163105A (en) A Method of and Apparatus for Measuring Surface Resistivity
US3402607A (en) Coupled inductance level indicator for liquid metals
JPH0252821B2 (en)
Gledhill et al. A new method for measurement of the high field conductance of electrolytes (The Wien effect)
GB1019685A (en) Improvements in or relating to the measurement of the electric resistance of semi-conductor material
GB1397246A (en) Apparatus for the measurement of magnetic fields
SU145045A1 (en) Device for measuring internal stresses and strains in non-magnetic metal products
US3323364A (en) Means for rejecting quadrature voltage signals in a flow meter
GB1396073A (en) Process and apparatus for the continuous measurement of the cross-sectional area of a wire
ES311762A1 (en) A procedure for the electrical measurement of the variation of a physical magnitude transformed in a variation of length. (Machine-translation by Google Translate, not legally binding)
GB1422613A (en) Apparatus for use in monitoring the level of the free surface of an electrically-conductive liquid
GB1228274A (en)
GB1108084A (en) Measurement of thickness and/or electrical resistivity of conductive sheet
JPS5512401A (en) Eddy current type range finder
GB599372A (en) Device for surface hardening cylindrical metallic elements of various diameters by means of high frequency induced currents
SU143587A1 (en) Device for measuring stresses and strains in products made of ferromagnetic material
GB665651A (en) Improved apparatus for indicating and/or measuring variations in thickness or other dimension
Fischell Effects of transverse compressional stress on magnetic laminations

Legal Events

Date Code Title Description
416 Proceeding under section 16 patents act 1949
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees