FR2184992B1 - - Google Patents

Info

Publication number
FR2184992B1
FR2184992B1 FR7317975A FR7317975A FR2184992B1 FR 2184992 B1 FR2184992 B1 FR 2184992B1 FR 7317975 A FR7317975 A FR 7317975A FR 7317975 A FR7317975 A FR 7317975A FR 2184992 B1 FR2184992 B1 FR 2184992B1
Authority
FR
France
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
FR7317975A
Other versions
FR2184992A1 (fr
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Publication of FR2184992A1 publication Critical patent/FR2184992A1/fr
Application granted granted Critical
Publication of FR2184992B1 publication Critical patent/FR2184992B1/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/22Measuring resistance of fluids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023Investigating 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • G01R23/09Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12Analogue/digital converters
    • H03M1/50Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52Input signal integrated with linear return to datum
FR7317975A 1972-05-18 1973-05-17 Expired FR2184992B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972057231U JPS5339259Y2 (fr) 1972-05-18 1972-05-18

Publications (2)

Publication Number Publication Date
FR2184992A1 FR2184992A1 (fr) 1973-12-28
FR2184992B1 true FR2184992B1 (fr) 1978-09-08

Family

ID=13049743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317975A Expired FR2184992B1 (fr) 1972-05-18 1973-05-17

Country Status (5)

Country Link
US (1) US3855522A (fr)
JP (1) JPS5339259Y2 (fr)
DE (1) DE2325055C3 (fr)
FR (1) FR2184992B1 (fr)
GB (1) GB1396813A (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1491207A (en) * 1973-11-12 1977-11-09 Atomic Energy Authority Uk Sensors for monitoring the electrical conductivity of electrically conductive fluids
US4047099A (en) * 1975-09-15 1977-09-06 Uniloc, Incorporated Method and apparatus for determining boiler water conductivity
US4282487A (en) * 1979-09-26 1981-08-04 Trw Inc. Subsea hydrocarbon sensor system
GB2122759A (en) * 1982-06-17 1984-01-18 British Nuclear Fuels Ltd Probe for measuring conductivity of a fluid
DE4025091A1 (de) * 1990-08-08 1992-02-13 Schilling Gerhard Vorrichtung zur messung der leitfaehigkeit von fluessigkeiten
US5268642A (en) * 1990-10-31 1993-12-07 Central Glass Company Limited Method and apparatus for measuring electrical conductivity of liquid
JPH04361168A (ja) * 1991-06-08 1992-12-14 Horiba Ltd 電磁誘導式導電率計
NL9301095A (nl) * 1993-06-23 1995-01-16 Yokogawa Europ Bv Werkwijze en inrichting voor de inductieve meting van het geleidingsvermogen van een vloeistof.
US6359449B1 (en) 1999-06-29 2002-03-19 Intellectual Property Llc Single coil conductance measuring apparatus
US6471106B1 (en) 2001-11-15 2002-10-29 Intellectual Property Llc Apparatus and method for restricting the discharge of fasteners from a tool
EP2784492B1 (fr) * 2013-03-27 2018-09-19 Baumer A/S Agencement de capteur de conductivité, en particulier pour mesurer la conductivité de liquides
US10607772B2 (en) * 2014-05-29 2020-03-31 R-Water Llc Conductivity and impedance sensor
DE102016119508A1 (de) * 2016-10-13 2018-04-19 Krohne Messtechnik Gmbh Leitfähigkeitssensor und Verfahren zur Bestimmung der elektrischen Leitfähigkeit eines flüssigen Mediums

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316547A (en) * 1964-07-15 1967-04-25 Fairchild Camera Instr Co Integrating analog-to-digital converter
US3603873A (en) * 1970-01-14 1971-09-07 Nus Corp Conductivity sensor

Also Published As

Publication number Publication date
DE2325055C3 (de) 1975-02-06
JPS4917273U (fr) 1974-02-14
DE2325055B2 (de) 1974-06-20
GB1396813A (en) 1975-06-04
US3855522A (en) 1974-12-17
FR2184992A1 (fr) 1973-12-28
DE2325055A1 (de) 1973-11-29
JPS5339259Y2 (fr) 1978-09-22

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Legal Events

Date Code Title Description
CA Change of address
TP Transmission of property
ST Notification of lapse