FR2545221B1 - Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur - Google Patents
Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteurInfo
- Publication number
- FR2545221B1 FR2545221B1 FR8307185A FR8307185A FR2545221B1 FR 2545221 B1 FR2545221 B1 FR 2545221B1 FR 8307185 A FR8307185 A FR 8307185A FR 8307185 A FR8307185 A FR 8307185A FR 2545221 B1 FR2545221 B1 FR 2545221B1
- Authority
- FR
- France
- Prior art keywords
- sensor
- control assembly
- assembly provided
- edge current
- resistivity control
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
- G01V3/107—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements
-
- 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
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
- G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- Electromagnetism (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8307185A FR2545221B1 (fr) | 1983-04-29 | 1983-04-29 | Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8307185A FR2545221B1 (fr) | 1983-04-29 | 1983-04-29 | Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2545221A1 FR2545221A1 (fr) | 1984-11-02 |
FR2545221B1 true FR2545221B1 (fr) | 1985-12-13 |
Family
ID=9288421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8307185A Expired FR2545221B1 (fr) | 1983-04-29 | 1983-04-29 | Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2545221B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8701980A (nl) * | 1987-08-24 | 1989-03-16 | Catena Product Dev Bv | Inductieve naderingssensor. |
AT389603B (de) * | 1987-10-06 | 1990-01-10 | Elin Union Ag | Induktiver annaeherungsdetektor |
DE4302984A1 (de) * | 1993-02-03 | 1994-08-04 | Robert Russ | Horizontal-Wirbelstromsensor |
IL122273A (en) | 1997-11-21 | 2001-07-24 | Sela Semiconductor Eng Laboratories | Remote resistivity measurement |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1274619A (fr) * | 1960-09-15 | 1961-10-27 | Eca | Perfectionnements apportés aux détecteurs de position d'une masse magnétique et leurs applications |
FR1280320A (fr) * | 1961-02-10 | 1961-12-29 | Affranch & Timbrage | Procédé pour la détection de pièces métalliques de bouchage ou surbouchage de bouteilles ou autres applications et dispositifs pour la mise en oeuvre de ce procédé |
US3753096A (en) * | 1971-02-04 | 1973-08-14 | Automation Ind Inc | Eddy current flaw detection system with left off compensation |
GB1603578A (en) * | 1978-08-25 | 1981-11-25 | Univ Georgetown | System and method for identifying samples having conductive properties |
-
1983
- 1983-04-29 FR FR8307185A patent/FR2545221B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2545221A1 (fr) | 1984-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3586383D1 (de) | Bildaufnahmegeraet. | |
EP0439161A3 (en) | Electrographic recording element with reduced humidity sensitivity | |
TR21559A (tr) | Bir piretroid uezerine kurulmus bir ensektisid ve akarisid tertip | |
DE3587960D1 (de) | Datenverarbeitungsanlage mit einem Speicherzugriffssteuergerät. | |
DE3685731D1 (de) | Kopiergeraet mit elektronischer abbildung. | |
DE68920781D1 (de) | Bildaufzeichnungsgerät. | |
DE68915235D1 (de) | Bildaufzeichnungsgerät. | |
DE3587643D1 (de) | Informationsverarbeitungseinheit mit Unterbrechungsfunktion. | |
DE3686665D1 (de) | Bildaufnahmegeraet. | |
DE68917791D1 (de) | Bildaufzeichnungsvorrichtung. | |
FR2495859B1 (fr) | Dispositif de commutation a capteur magnetique | |
DE3883641D1 (de) | Aufzeichnungssteuergerät. | |
DE68921819D1 (de) | Bildaufzeichnungsgerät. | |
DE3671549D1 (de) | Elektrophotographisches aufzeichnungsmaterial. | |
FR2626362B1 (fr) | Un capteur electrique a inclinaison et un circuit de controle pour le capteur | |
DE3684114D1 (de) | Bildaufnahmegeraet. | |
DE68919432D1 (de) | Bildaufzeichnungsgerät. | |
DE68923543D1 (de) | Bildaufzeichnungsvorrichtung. | |
DE68915921D1 (de) | Elektrofotografisches Aufnahmegerät. | |
DE3877051D1 (de) | Elektrophotographisches aufnahmegeraet. | |
DE68909470D1 (de) | Bildaufnahmegeraet. | |
ES532492A0 (es) | Una instalacion de control de almacenamiento intermedio en un procesador de datos | |
FR2625322B1 (fr) | Capteur de courant a element magnetoresistif | |
DE3882431D1 (de) | Bildaufnahmegeraet mit einem bildelement-kompensationskreis. | |
DE68920584D1 (de) | Photoleitendes Aufzeichnungselement. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |