FR2339169A1 - Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77) - Google Patents

Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77)

Info

Publication number
FR2339169A1
FR2339169A1 FR7601904A FR7601904A FR2339169A1 FR 2339169 A1 FR2339169 A1 FR 2339169A1 FR 7601904 A FR7601904 A FR 7601904A FR 7601904 A FR7601904 A FR 7601904A FR 2339169 A1 FR2339169 A1 FR 2339169A1
Authority
FR
France
Prior art keywords
hygrometer
hydrophilic
cpd
linearly
monomolecular layer
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
FR7601904A
Other languages
French (fr)
Other versions
FR2339169B1 (en
Inventor
Andre Barraud
Jean Messier
Andre Rosilio
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7601904A priority Critical patent/FR2339169A1/en
Priority to NL7700316A priority patent/NL7700316A/en
Priority to FI770179A priority patent/FI59675C/en
Priority to DE19772702487 priority patent/DE2702487A1/en
Publication of FR2339169A1 publication Critical patent/FR2339169A1/en
Application granted granted Critical
Publication of FR2339169B1 publication Critical patent/FR2339169B1/fr
Granted 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
    • G01N27/225—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 by using hygroscopic materials

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)

Abstract

A hygrometer consists of >=1 monomolecular layer of an organic cpd. (I) having hydrophilic gps. deposited on a metallic substrate and covered with a metallic layer which is sufficiently thin to allow ambient moisture to diffuse through. The substrate is pref. of Al and may consist of several non-touching parts and the cover pref. of Al or Au. (I) is esp. Ca behenate or alpha-hydroxydocosanoic acid. The hygrometer rapidly gives values of environmental humidity and is not subject to hystersis effects.
FR7601904A 1976-01-23 1976-01-23 Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77) Granted FR2339169A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7601904A FR2339169A1 (en) 1976-01-23 1976-01-23 Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77)
NL7700316A NL7700316A (en) 1976-01-23 1977-01-13 HYGROMETER WITH MONOMOLECULAR LAYERS.
FI770179A FI59675C (en) 1976-01-23 1977-01-20 HYGROMETER MED MONOMOLEKYLAERA SKIKT
DE19772702487 DE2702487A1 (en) 1976-01-23 1977-01-21 MONOMOLECULAR SHEET HYGROMETER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7601904A FR2339169A1 (en) 1976-01-23 1976-01-23 Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77)

Publications (2)

Publication Number Publication Date
FR2339169A1 true FR2339169A1 (en) 1977-08-19
FR2339169B1 FR2339169B1 (en) 1978-10-06

Family

ID=9168316

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7601904A Granted FR2339169A1 (en) 1976-01-23 1976-01-23 Hygrometer with monomolecular layer of hydrophilic cpd. - between two metal layers, with electrical capacity changing rapidly and linearly with humidity change (NL 26.7.77)

Country Status (4)

Country Link
DE (1) DE2702487A1 (en)
FI (1) FI59675C (en)
FR (1) FR2339169A1 (en)
NL (1) NL7700316A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094266A2 (en) * 1982-05-11 1983-11-16 Direction De La Meteorologie Du Ministere Des Transports Method of making a temperature or a moisture sensor of the thin layer type, and sensor produced
EP0058102B1 (en) * 1981-01-19 1986-01-02 Commissariat à l'Energie Atomique Method of making a capacitance humidity sensor with a thin dielectric

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2848034A1 (en) * 1978-11-06 1980-05-14 Siemens Ag CAPACITIVE HUMIDITY SENSOR
US4272986A (en) * 1979-04-16 1981-06-16 Harris Corporation Method and means for measuring moisture content of hermetic semiconductor devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058102B1 (en) * 1981-01-19 1986-01-02 Commissariat à l'Energie Atomique Method of making a capacitance humidity sensor with a thin dielectric
EP0094266A2 (en) * 1982-05-11 1983-11-16 Direction De La Meteorologie Du Ministere Des Transports Method of making a temperature or a moisture sensor of the thin layer type, and sensor produced
FR2526949A1 (en) * 1982-05-11 1983-11-18 Ministere Transports Direct Me METHOD FOR MANUFACTURING THIN FILM TYPE TEMPERATURE OR MOISTURE SENSOR AND SENSORS OBTAINED
EP0094266A3 (en) * 1982-05-11 1988-07-27 Mini Transport Meteorolog Method of making a temperature or a moisture sensor of the thin layer type, and sensor produced

Also Published As

Publication number Publication date
FI770179A (en) 1977-07-24
NL7700316A (en) 1977-07-26
FI59675B (en) 1981-05-29
DE2702487A1 (en) 1977-07-28
FI59675C (en) 1984-02-21
FR2339169B1 (en) 1978-10-06

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Legal Events

Date Code Title Description
ST Notification of lapse