JPS574542A - Humidity detector - Google Patents

Humidity detector

Info

Publication number
JPS574542A
JPS574542A JP7837180A JP7837180A JPS574542A JP S574542 A JPS574542 A JP S574542A JP 7837180 A JP7837180 A JP 7837180A JP 7837180 A JP7837180 A JP 7837180A JP S574542 A JPS574542 A JP S574542A
Authority
JP
Japan
Prior art keywords
humidity
film
long period
cr2o3
adjacently
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
JP7837180A
Other languages
Japanese (ja)
Inventor
Koji Nomaki
Junji Nanao
Shoki Sakurai
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP7837180A priority Critical patent/JPS574542A/en
Publication of JPS574542A publication Critical patent/JPS574542A/en
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
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating 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
    • G01N27/121—Investigating 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

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 Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE:To obtain a humidity detector which can perform an accurate humidity detection constantly over a long period of use, by installing a heater adjacently to a humidity-sensitive body made of a given material whose electric resistance responds to humidity. CONSTITUTION:On comb-shaped electrodes 2 and 3 on an alumina substrate 1, a film 4 of Cr2O3 whose electric resistance varies with humidity is formed. Adjacently thereto, a nichrome wire 5 is wound a plural turns so as to surround the film 4 and the substrate 1. Owing to said nichrome wire 5, the Cr2O3 film is heated to a given temperature within a range of 300-1,000 deg.C. Accordingly, there is no deterioration with age over a long period of use, and it is possible to obtain a humidity detector which can perform an accurate detection constantly over a long period of time. In addition, the heater can be provided in the Cr2O3 film.
JP7837180A 1980-06-12 1980-06-12 Humidity detector Pending JPS574542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7837180A JPS574542A (en) 1980-06-12 1980-06-12 Humidity detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7837180A JPS574542A (en) 1980-06-12 1980-06-12 Humidity detector

Publications (1)

Publication Number Publication Date
JPS574542A true JPS574542A (en) 1982-01-11

Family

ID=13660144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7837180A Pending JPS574542A (en) 1980-06-12 1980-06-12 Humidity detector

Country Status (1)

Country Link
JP (1) JPS574542A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62165159U (en) * 1986-04-09 1987-10-20
JPS6385542U (en) * 1986-11-26 1988-06-04

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62165159U (en) * 1986-04-09 1987-10-20
JPH0452121Y2 (en) * 1986-04-09 1992-12-08
JPS6385542U (en) * 1986-11-26 1988-06-04

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