FR2397124A1 - Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation - Google Patents

Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation

Info

Publication number
FR2397124A1
FR2397124A1 FR7720586A FR7720586A FR2397124A1 FR 2397124 A1 FR2397124 A1 FR 2397124A1 FR 7720586 A FR7720586 A FR 7720586A FR 7720586 A FR7720586 A FR 7720586A FR 2397124 A1 FR2397124 A1 FR 2397124A1
Authority
FR
France
Prior art keywords
ionisation
assembly
radioactive source
designed
electrical charge
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
FR7720586A
Other languages
French (fr)
Other versions
FR2397124B1 (en
Inventor
Daniel Lecuyer
Jean Mars
Guy Roux
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
Priority to FR7720586A priority Critical patent/FR2397124A1/en
Publication of FR2397124A1 publication Critical patent/FR2397124A1/en
Application granted granted Critical
Publication of FR2397124B1 publication Critical patent/FR2397124B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
    • 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
    • G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electrostatic Separation (AREA)

Abstract

The system consists of a charge collection and ionisation assembly (I) and electronic control circuit (II) through which the assembly (I) is connected to earth. The assembly (I) consists of a rectangular metallic strip (5) which supports a radioactive source (7). The assembly (i) has also auxiliary electrodes (20) fixed to the strip (5) and insulated from it. The electrodes (20) are connected in series to a low voltage source (21). An ionisation current is established through a resistance (9) in the absence of electrostatic charges on a band (1). It is possible to trace the variation in ionisation power of the source which permits detection of dust on its surface.
FR7720586A 1977-07-05 1977-07-05 Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation Granted FR2397124A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7720586A FR2397124A1 (en) 1977-07-05 1977-07-05 Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7720586A FR2397124A1 (en) 1977-07-05 1977-07-05 Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation

Publications (2)

Publication Number Publication Date
FR2397124A1 true FR2397124A1 (en) 1979-02-02
FR2397124B1 FR2397124B1 (en) 1980-10-10

Family

ID=9192978

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720586A Granted FR2397124A1 (en) 1977-07-05 1977-07-05 Electrical charge elimination system - is designed for use in inflammable atmospheres and uses radioactive source to promote ionisation

Country Status (1)

Country Link
FR (1) FR2397124A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013006348A1 (en) * 2011-07-04 2013-01-10 Illinois Tool Works Inc. Method for monitoring the operational reliability of at least one passive electrode and apparatus for monitoring the operational reliability of at least one passive electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013006348A1 (en) * 2011-07-04 2013-01-10 Illinois Tool Works Inc. Method for monitoring the operational reliability of at least one passive electrode and apparatus for monitoring the operational reliability of at least one passive electrode

Also Published As

Publication number Publication date
FR2397124B1 (en) 1980-10-10

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Legal Events

Date Code Title Description
ST Notification of lapse