DE6908118U - Vorrichtung zur bestimmung polarer fluessigkeiten - Google Patents

Vorrichtung zur bestimmung polarer fluessigkeiten

Info

Publication number
DE6908118U
DE6908118U DE19696908118 DE6908118U DE6908118U DE 6908118 U DE6908118 U DE 6908118U DE 19696908118 DE19696908118 DE 19696908118 DE 6908118 U DE6908118 U DE 6908118U DE 6908118 U DE6908118 U DE 6908118U
Authority
DE
Germany
Prior art keywords
crystal
electrodes
electrode
additives
area
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
Application number
DE19696908118
Other languages
German (de)
English (en)
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.)
NAT LEAD CO
NL Industries Inc
Original Assignee
NAT LEAD CO
NL Industries Inc
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 NAT LEAD CO, NL Industries Inc filed Critical NAT LEAD CO
Publication of DE6908118U publication Critical patent/DE6908118U/de
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • 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
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
    • 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
    • G01N27/22Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223Investigating 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
    • G01N27/225Investigating 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 by using hygroscopic materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/025Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric

Landscapes

  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
DE19696908118 1968-03-01 1969-02-28 Vorrichtung zur bestimmung polarer fluessigkeiten Expired DE6908118U (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70964268A 1968-03-01 1968-03-01

Publications (1)

Publication Number Publication Date
DE6908118U true DE6908118U (de) 1969-12-11

Family

ID=24850741

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19696908118 Expired DE6908118U (de) 1968-03-01 1969-02-28 Vorrichtung zur bestimmung polarer fluessigkeiten
DE19691910287 Pending DE1910287A1 (de) 1968-03-01 1969-02-28 Vorrichtung zur Bestimmung polarer Fluessigkeiten

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE19691910287 Pending DE1910287A1 (de) 1968-03-01 1969-02-28 Vorrichtung zur Bestimmung polarer Fluessigkeiten

Country Status (7)

Country Link
BE (1) BE728659A (ja)
CH (1) CH508880A (ja)
DE (2) DE6908118U (ja)
FR (1) FR2003030A1 (ja)
GB (1) GB1243095A (ja)
LU (1) LU58107A1 (ja)
NL (1) NL6903203A (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408218C3 (de) * 1974-02-21 1983-11-03 Ehlen, Karl Josef, Dr., 5000 Köln Schaltungsanordnung zum Nachweis von Gasen
DE3024523A1 (de) * 1980-06-28 1982-01-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Als elektrischer kondensator ausgebildeter feuchtigkeitssensor
GB8326982D0 (en) * 1983-10-08 1983-11-09 Plessey Co Plc Atmospheric sensor
GB2181257B (en) * 1983-10-08 1988-06-29 Plessey Co Plc A probe
CN1059962C (zh) * 1998-05-26 2000-12-27 华南理工大学 一种可集成多功能湿光敏元件及其制造方法

Also Published As

Publication number Publication date
BE728659A (ja) 1969-08-19
NL6903203A (ja) 1969-09-03
DE1910287A1 (de) 1970-04-09
FR2003030A1 (ja) 1969-11-07
GB1243095A (en) 1971-08-18
CH508880A (fr) 1971-06-15
LU58107A1 (ja) 1969-06-03

Similar Documents

Publication Publication Date Title
DE2842028C3 (de) Vorrichtung zum Messen der Kapazität eines Kondensators
DE3530758C2 (ja)
DE3922423C2 (de) Ferroelektrischer Speicher
DE2852570A1 (de) Temperatur-messvorrichtung
DE3586552T2 (de) Bistabile fluessigkristallspeichervorrichtung.
DE69625777T2 (de) Verfahren zur Bestimmung der Konzentration eines magnetischen Pulvers und Vorrichtung dazu
DE2237997B2 (de) Flüssigkristallzelle mit Speicherwirkung
CH662191A5 (de) Verfahren und einrichtung zum anzeigen einer information.
DE102008044312A1 (de) Erfassungsvorrichtung zum Erfassen einer in einem Kraftstoffgemisch enthaltenen Komponentendichte
DE2941652C2 (de) Vorrichtung zur kapazitiven Füllstandsmessung
DE68911758T2 (de) Die Eigenschaften eines Flüssigkristalles nutzender Berührungsschalter.
DE6908118U (de) Vorrichtung zur bestimmung polarer fluessigkeiten
DE19846254C2 (de) Infrarotsensor
DE3149268A1 (de) "fluessigkristall-anzeigezelle"
DE2619327A1 (de) Elektrooptischer umschalter
DE2638055C3 (de) Quarzoszillator mit Frequenzeinstellvorrichtung
DE2944364C2 (de) Anordnung zur Messung einer Größe, die einen Feldeffekttransistor beeinflußt
DE1931883A1 (de) Verfahren und Anordnung zur Erzielung einer linearen AEnderung der Arbeitsfrequenz eines kristallgesteuerten Oszillators
DE4103433A1 (de) Messschaltung fuer kleine kapazitaeten
DE4344902B4 (de) Verfahren zur Depolarisierung eines ferroelektrischen Materials auf elektrischem Wege und dessen Anwendung zur Herstellung eines ferroelektrischen Materials mit verstärkter Festigkeit
DE2848112A1 (de) Elektronisches fieberthermometer
DE1498614A1 (de) Vorrichtung zur Bestimmung der elektrischen Leitfaehigkeit von Fluessigkeiten
DE4210164A1 (de) Verfahren und Schaltungsanordnung zum Fernmessen von Zuständen
DE2133394C3 (de) Drucksensor und Verfahren zu seinem Betrieb
DE60115015T2 (de) Flüssigkristallzellensystem und Methode zur Verbesserung eines Flüssigkristallzellensystems