FR2468916A1 - Appareil pour mesurer l'impedance electrique de materiaux divers - Google Patents

Appareil pour mesurer l'impedance electrique de materiaux divers Download PDF

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Publication number
FR2468916A1
FR2468916A1 FR7926854A FR7926854A FR2468916A1 FR 2468916 A1 FR2468916 A1 FR 2468916A1 FR 7926854 A FR7926854 A FR 7926854A FR 7926854 A FR7926854 A FR 7926854A FR 2468916 A1 FR2468916 A1 FR 2468916A1
Authority
FR
France
Prior art keywords
signal
output
phase
output signal
mixer
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
FR7926854A
Other languages
English (en)
French (fr)
Other versions
FR2468916B1 (enExample
Inventor
Fritz K Preikschat
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.)
Eur-Control Kalle AB
Original Assignee
Eur-Control Kalle AB
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
Priority to DE19792943198 priority Critical patent/DE2943198A1/de
Application filed by Eur-Control Kalle AB filed Critical Eur-Control Kalle AB
Priority to FR7926854A priority patent/FR2468916A1/fr
Publication of FR2468916A1 publication Critical patent/FR2468916A1/fr
Application granted granted Critical
Publication of FR2468916B1 publication Critical patent/FR2468916B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2617—Measuring dielectric properties, e.g. constants
    • G01R27/2623—Measuring-systems or electronic circuits
    • 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
    • G01N27/028—Circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant

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)
  • Measurement Of Resistance Or Impedance (AREA)
FR7926854A 1979-10-25 1979-10-30 Appareil pour mesurer l'impedance electrique de materiaux divers Granted FR2468916A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19792943198 DE2943198A1 (de) 1979-10-25 1979-10-25 Vorrichtung zum messen der elektrischen impedanz von insbesondere teilchenfoermigen materialien
FR7926854A FR2468916A1 (fr) 1979-10-25 1979-10-30 Appareil pour mesurer l'impedance electrique de materiaux divers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792943198 DE2943198A1 (de) 1979-10-25 1979-10-25 Vorrichtung zum messen der elektrischen impedanz von insbesondere teilchenfoermigen materialien
FR7926854A FR2468916A1 (fr) 1979-10-25 1979-10-30 Appareil pour mesurer l'impedance electrique de materiaux divers

Publications (2)

Publication Number Publication Date
FR2468916A1 true FR2468916A1 (fr) 1981-05-08
FR2468916B1 FR2468916B1 (enExample) 1985-01-11

Family

ID=25781674

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926854A Granted FR2468916A1 (fr) 1979-10-25 1979-10-30 Appareil pour mesurer l'impedance electrique de materiaux divers

Country Status (2)

Country Link
DE (1) DE2943198A1 (enExample)
FR (1) FR2468916A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645275A1 (fr) * 1989-03-28 1990-10-05 Bartolo Rene Procede et appareil de controle d'une polymerisation, et capteur pour leur mise en oeuvre
NL1005956C2 (nl) * 1997-05-02 1998-11-03 Arnold Brookhuis Textieltechni Inrichting voor het meten van de vochtigheid van een materiaal, bijvoorbeeld hout.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513848A1 (de) * 1985-04-17 1986-10-23 Quante Fernmeldetechnik GmbH, 5600 Wuppertal Schaltung zur ueberwachung der isolationswiderstaende einer schar von baugruppen einer elektrischen anlage mit gemeinsamer erdfreier stromversorgung, insbesondere einer fernmelde- oder signaltechnischen einrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746975A (en) * 1971-08-20 1973-07-17 Drexelbrook Controls Measuring characteristics of materials by using susceptive and conductive components of admittance
US4146834A (en) * 1974-09-19 1979-03-27 Drexelbrook Controls, Inc. Admittance measuring system for monitoring the condition of materials

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939077A (en) * 1954-09-27 1960-05-31 Shell Oil Co Phase discriminating system
US3025465A (en) * 1959-10-12 1962-03-13 Forte Fairbairn Inc Measurement of capacitivity of materials
US3671857A (en) * 1970-04-29 1972-06-20 Karlis Alfredovich Bergmanis Device for measuring permittivity of materials
US3786349A (en) * 1973-05-03 1974-01-15 Northern Electric Co Electrical reactance and loss measurement apparatus and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746975A (en) * 1971-08-20 1973-07-17 Drexelbrook Controls Measuring characteristics of materials by using susceptive and conductive components of admittance
US4146834A (en) * 1974-09-19 1979-03-27 Drexelbrook Controls, Inc. Admittance measuring system for monitoring the condition of materials
US4146834B1 (enExample) * 1974-09-19 1992-09-22 Drexelbrook Controls

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645275A1 (fr) * 1989-03-28 1990-10-05 Bartolo Rene Procede et appareil de controle d'une polymerisation, et capteur pour leur mise en oeuvre
NL1005956C2 (nl) * 1997-05-02 1998-11-03 Arnold Brookhuis Textieltechni Inrichting voor het meten van de vochtigheid van een materiaal, bijvoorbeeld hout.
WO1998050785A1 (en) * 1997-05-02 1998-11-12 Arnold Brookhuis Textieltechniek B.V. Device for measuring the humidity of a material, e.g. wood

Also Published As

Publication number Publication date
DE2943198A1 (de) 1981-05-14
FR2468916B1 (enExample) 1985-01-11

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