JPS57139652A - Humidity sensor - Google Patents
Humidity sensorInfo
- Publication number
- JPS57139652A JPS57139652A JP2576881A JP2576881A JPS57139652A JP S57139652 A JPS57139652 A JP S57139652A JP 2576881 A JP2576881 A JP 2576881A JP 2576881 A JP2576881 A JP 2576881A JP S57139652 A JPS57139652 A JP S57139652A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fibers
- detecting part
- electrodes
- extended
- humidity
- 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
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 form the compact, light, highly reliable humidity sensor having less temperature dependence, by embedding a bundled body carbon fibers arranged in staggered manner in a humidity sensitive resin layer, and detecting the variation in electric resistance of said bundled body. CONSTITUTION:A detecting part 1, wherein the carbon fibers are finely arranged in staggered pattern in a film of humidity sensitive resin (e.g. nylon), is closely contacted with a substrate 2 (a glass plate, an alumina plate, and the like). Then electrodes 3 are formed at the ends of the carbon fibers extended from the detecting part 1 by using conducting paste. Lead wires 4 are extended from the electrodes 3. The electrodes 3 are coated by a bonding agent 15 such as epoxy series resin. In said sensor, when the resin in the detecting part 1 is extended by absorbing moisture in the surrounding environment, the interval between the carbon fibers in the detecting part 1 is increased and the contact resistance is increased. By measuring the value of the electric resistance of said carbon fiber bundled body, the humidity in the surrounding environment can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576881A JPS57139652A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576881A JPS57139652A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57139652A true JPS57139652A (en) | 1982-08-28 |
Family
ID=12175013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2576881A Pending JPS57139652A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57139652A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4489603A (en) * | 1981-09-09 | 1984-12-25 | Nippon Soken, Inc. | Moisture sensitive element |
WO2002010704A3 (en) * | 2000-08-01 | 2003-01-03 | Calgon Carbon Corp | Apparatus for detecting changes in concentrations of components of fluid mixtures |
DE102015211450A1 (en) * | 2015-06-22 | 2017-01-05 | Volkswagen Aktiengesellschaft | Device for measuring moisture in a battery system |
-
1981
- 1981-02-23 JP JP2576881A patent/JPS57139652A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4489603A (en) * | 1981-09-09 | 1984-12-25 | Nippon Soken, Inc. | Moisture sensitive element |
WO2002010704A3 (en) * | 2000-08-01 | 2003-01-03 | Calgon Carbon Corp | Apparatus for detecting changes in concentrations of components of fluid mixtures |
DE102015211450A1 (en) * | 2015-06-22 | 2017-01-05 | Volkswagen Aktiengesellschaft | Device for measuring moisture in a battery system |
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