FR2627866A1 - - Google Patents

Download PDF

Info

Publication number
FR2627866A1
FR2627866A1 FR8816657A FR8816657A FR2627866A1 FR 2627866 A1 FR2627866 A1 FR 2627866A1 FR 8816657 A FR8816657 A FR 8816657A FR 8816657 A FR8816657 A FR 8816657A FR 2627866 A1 FR2627866 A1 FR 2627866A1
Authority
FR
France
Prior art keywords
oscillating circuit
substance
circuit according
electrodes
support
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.)
Pending
Application number
FR8816657A
Other languages
English (en)
French (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.)
Koerber AG
Original Assignee
Koerber AG
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 Koerber AG filed Critical Koerber AG
Publication of FR2627866A1 publication Critical patent/FR2627866A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity

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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Ceramic Capacitors (AREA)
FR8816657A 1987-12-19 1988-12-16 Pending FR2627866A1 (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3743216A DE3743216C2 (de) 1987-12-19 1987-12-19 Hochfrequenzschwingkreis

Publications (1)

Publication Number Publication Date
FR2627866A1 true FR2627866A1 (https=) 1989-09-01

Family

ID=6343055

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8816657A Pending FR2627866A1 (https=) 1987-12-19 1988-12-16

Country Status (6)

Country Link
JP (1) JPH01203958A (https=)
CA (1) CA1333450C (https=)
DE (1) DE3743216C2 (https=)
FR (1) FR2627866A1 (https=)
GB (1) GB2211618B (https=)
IT (1) IT1228037B (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934881A1 (de) * 1999-07-24 2001-01-25 Deere & Co Einrichtung zur Messung der Feuchtigkeit von Erntegut
DE102004063229B4 (de) 2004-12-22 2007-06-14 Hauni Maschinenbau Ag Meßvorrichtung und -verfahren zur Erkennung von Fremdkörpern in einem Produkt, insbesondere in Tabak, Baumwolle oder einem anderen Faserprodukt
DE102004063228B4 (de) 2004-12-22 2007-06-28 Hauni Maschinenbau Ag Meßvorrichtung und -verfahren zur Bestimmung einer dielektrischen Eigenschaft, insbesondere der Feuchte und/oder Dichte, eines Produkts
KR20100014456A (ko) * 2007-03-15 2010-02-10 니뽄 가이시 가부시키가이샤 입자상 물질 검출 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811087A (en) * 1973-05-21 1974-05-14 Rothmans Of Pall Mall Measurement of moisture content of materials
US3979581A (en) * 1974-02-26 1976-09-07 Hauni-Werke Korber & Co., Kg Method and arrangement for determining the mass of tobacco or the like by capacitance and attenuation measurements in a resonant high frequency oscillator circuit
GB2115933A (en) * 1982-02-01 1983-09-14 Kajaani Oy Procedure and means for measuring the coal content in quick ash
GB2125553A (en) * 1982-08-10 1984-03-07 Standard Telephones Cables Ltd Multi-purpose sensor/detector for fluid

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1000472A (en) * 1962-01-29 1965-08-04 British American Tobacco Co Improvements relating to the testing of moisture content of tobacco and other loose material
GB1103275A (en) * 1964-02-05 1968-02-14 Nat Res Dev Testing the stability of suspensions in liquid media
DE2146386C3 (de) * 1971-09-16 1980-10-02 Hauni-Werke Koerber & Co Kg, 2050 Hamburg Anordnung zum Erfassen der Feuchte von Tabak o.a. rauchfähigem Gut
JPS54154074A (en) * 1978-05-25 1979-12-04 Matsushita Electric Industrial Co Ltd Inductance parts
JPS57148242A (en) * 1981-03-09 1982-09-13 Nissan Motor Co Ltd Electrostatic capacity sensor
DE3329025A1 (de) * 1983-08-11 1985-02-28 Kurt 7895 Klettgau Arnold Verfahren und einrichtung zum bestimmen des feuchtegehalts von getreide und anderen koernigen stoffen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811087A (en) * 1973-05-21 1974-05-14 Rothmans Of Pall Mall Measurement of moisture content of materials
US3979581A (en) * 1974-02-26 1976-09-07 Hauni-Werke Korber & Co., Kg Method and arrangement for determining the mass of tobacco or the like by capacitance and attenuation measurements in a resonant high frequency oscillator circuit
GB2115933A (en) * 1982-02-01 1983-09-14 Kajaani Oy Procedure and means for measuring the coal content in quick ash
GB2125553A (en) * 1982-08-10 1984-03-07 Standard Telephones Cables Ltd Multi-purpose sensor/detector for fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
POMIARY AUTOMATYKA KONTROLA, vol. 21, no. 7, juillet 1975, pages 307-309; F. ZRUDELNY et al.: "A meter for continuous measurement of moisture content in paper, using a unique circuit for measuring small capacitance changes" *

Also Published As

Publication number Publication date
CA1333450C (en) 1994-12-13
DE3743216C2 (de) 1996-12-19
IT8822967A0 (it) 1988-12-16
DE3743216A1 (de) 1989-06-29
GB2211618A (en) 1989-07-05
IT1228037B (it) 1991-05-27
GB8829323D0 (en) 1989-02-01
GB2211618B (en) 1992-07-15
JPH01203958A (ja) 1989-08-16

Similar Documents

Publication Publication Date Title
EP0048689B1 (fr) Thermomètre à quartz
FR2616912A1 (fr) Detecteur de point de rosee
EP0023171B1 (fr) Oscillateur haute fréquence autothermostaté
FR2517889A1 (fr) Procede permettant de realiser un dispositif piezo-electrique, ainsi qu'un dispositif realise selon ce procede
FR2466117A1 (fr) Laser a gaz excite a haute frequence
FR2532428A1 (fr) Dispositif de mesure du point de rosee
FR2480673A1 (fr) Couches portantes, et procede pour leur fabrication, en particulier pour des detecteurs sur des moteurs a combustion interne
US2487165A (en) Crystal electrode
FR2493984A1 (fr) Transducteur de pression a element vibrant
FR2474256A1 (fr) Procede d'ajustement de dispositifs a ondes acoustiques de surface
FR2627866A1 (https=)
EP0446107B1 (fr) Système de transmission d'énergie électrique, aux hyperfréquences, à effet gyromagnétique, tel que circulateur, isolateur ou filtre
FR2635247A1 (fr) Transducteur piezoelectrique pour generer des ondes de volume
CH623690A5 (https=)
EP0040559A1 (fr) Dispositif convoluteur piézoélectrique à ondes élastiques
EP0557216A1 (fr) Micro-capteur de pression
EP0011694B1 (fr) Procédé et dispositif d'ajustement réversible des paramètres électriques d'un circuit électrique
FR2831705A1 (fr) Micro-condensateur variable a fort rapport et faible tension d'actionnement
FR2525383A1 (fr) Resistances en constantes reparties pour charges a forte dissipation en hyperfrequence
FR2607999A1 (fr) Ensemble de circuit electronique commande en temperature
BE898089A (fr) Transformateur de tension capacitif.
EP0094266B1 (fr) Procédé de fabrication d'un capteur de température ou d'humidité du type à couches minces et capteurs obtenus
EP2871457B1 (fr) Capteur de pression a resonateur electromagnetique
Sakurai et al. Formation and properties of anodic oxide films on indium antimonide
Armstrong et al. The double layer capacity of the Au/Na—β-alumina interface—Variation with temperature