FR2332530A1 - Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable - Google Patents

Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable

Info

Publication number
FR2332530A1
FR2332530A1 FR7535842A FR7535842A FR2332530A1 FR 2332530 A1 FR2332530 A1 FR 2332530A1 FR 7535842 A FR7535842 A FR 7535842A FR 7535842 A FR7535842 A FR 7535842A FR 2332530 A1 FR2332530 A1 FR 2332530A1
Authority
FR
France
Prior art keywords
conductor
capacitance measuring
cooling water
measuring gauge
insulating sheath
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
FR7535842A
Other languages
French (fr)
Other versions
FR2332530B1 (en
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.)
Societe Industrielle de Liaisons Electriques SA
Original Assignee
Societe Industrielle de Liaisons Electriques SA
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 Societe Industrielle de Liaisons Electriques SA filed Critical Societe Industrielle de Liaisons Electriques SA
Priority to FR7535842A priority Critical patent/FR2332530A1/en
Publication of FR2332530A1 publication Critical patent/FR2332530A1/en
Application granted granted Critical
Publication of FR2332530B1 publication Critical patent/FR2332530B1/fr
Granted 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
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/24—Investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G01R31/59—Testing of lines, cables or conductors while the cable continuously passes the testing apparatus, e.g. during manufacture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A procedure is described for continuous, qualitative inspection of the insulating envelope of a conductor insulated by a polyolefine extrusion. The conductor is made to pass into a capacitance measuring gauge immersed in the water of the conductor's cooling bath, and the output signal from the gauge is treated so that an alarm signal is produced when thickness faults are detected on short lengths of conductor. The gauge is annular and the output current is positive or negative depending on whether the measured value of the capacitance is greater than or less than a nominal value.
FR7535842A 1975-11-24 1975-11-24 Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable Granted FR2332530A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7535842A FR2332530A1 (en) 1975-11-24 1975-11-24 Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7535842A FR2332530A1 (en) 1975-11-24 1975-11-24 Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable

Publications (2)

Publication Number Publication Date
FR2332530A1 true FR2332530A1 (en) 1977-06-17
FR2332530B1 FR2332530B1 (en) 1978-04-14

Family

ID=9162805

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535842A Granted FR2332530A1 (en) 1975-11-24 1975-11-24 Continuous qualitative inspection of conductor insulating sheath - using capacitance measuring gauge immersed in cooling water surrounding extruded cable

Country Status (1)

Country Link
FR (1) FR2332530A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045222A1 (en) * 2005-09-22 2007-03-29 Rehau Ag + Co Process for the capacitive detection of defects in polymer pipes and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045222A1 (en) * 2005-09-22 2007-03-29 Rehau Ag + Co Process for the capacitive detection of defects in polymer pipes and apparatus
US7834644B2 (en) 2005-09-22 2010-11-16 Rehau Ag & Co. Method for the capacitive detection of flaws in polymer tubes, and device

Also Published As

Publication number Publication date
FR2332530B1 (en) 1978-04-14

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