DE1910287A1 - Vorrichtung zur Bestimmung polarer Fluessigkeiten - Google Patents

Vorrichtung zur Bestimmung polarer Fluessigkeiten

Info

Publication number
DE1910287A1
DE1910287A1 DE19691910287 DE1910287A DE1910287A1 DE 1910287 A1 DE1910287 A1 DE 1910287A1 DE 19691910287 DE19691910287 DE 19691910287 DE 1910287 A DE1910287 A DE 1910287A DE 1910287 A1 DE1910287 A1 DE 1910287A1
Authority
DE
Germany
Prior art keywords
crystal
bridge
electrodes
polar
die
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
DE19691910287
Other languages
German (de)
English (en)
Inventor
Urban Stephen F
Pulvari Charles Ferencz
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 DE1910287A1 publication Critical patent/DE1910287A1/de
Pending 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)
DE19691910287 1968-03-01 1969-02-28 Vorrichtung zur Bestimmung polarer Fluessigkeiten Pending DE1910287A1 (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
DE1910287A1 true DE1910287A1 (de) 1970-04-09

Family

ID=24850741

Family Applications (2)

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

Family Applications After (1)

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

Country Status (7)

Country Link
BE (1) BE728659A (enrdf_load_stackoverflow)
CH (1) CH508880A (enrdf_load_stackoverflow)
DE (2) DE1910287A1 (enrdf_load_stackoverflow)
FR (1) FR2003030A1 (enrdf_load_stackoverflow)
GB (1) GB1243095A (enrdf_load_stackoverflow)
LU (1) LU58107A1 (enrdf_load_stackoverflow)
NL (1) NL6903203A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408218A1 (de) * 1974-02-21 1975-09-04 Krupp Gmbh Geraet zur gasanalyse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024523A1 (de) * 1980-06-28 1982-01-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Als elektrischer kondensator ausgebildeter feuchtigkeitssensor
GB2181257B (en) * 1983-10-08 1988-06-29 Plessey Co Plc A probe
GB8326982D0 (en) * 1983-10-08 1983-11-09 Plessey Co Plc Atmospheric sensor
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408218A1 (de) * 1974-02-21 1975-09-04 Krupp Gmbh Geraet zur gasanalyse

Also Published As

Publication number Publication date
DE6908118U (de) 1969-12-11
LU58107A1 (enrdf_load_stackoverflow) 1969-06-03
BE728659A (enrdf_load_stackoverflow) 1969-08-19
FR2003030A1 (enrdf_load_stackoverflow) 1969-11-07
CH508880A (fr) 1971-06-15
GB1243095A (en) 1971-08-18
NL6903203A (enrdf_load_stackoverflow) 1969-09-03

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