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 ionisationInfo
- 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
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)
- Electrostatic Separation (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (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.
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)
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 |
-
1977
- 1977-07-05 FR FR7720586A patent/FR2397124A1/en active Granted
Cited By (1)
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 |