JPS6423149A - Humidity sensor - Google Patents
Humidity sensorInfo
- Publication number
- JPS6423149A JPS6423149A JP62180509A JP18050987A JPS6423149A JP S6423149 A JPS6423149 A JP S6423149A JP 62180509 A JP62180509 A JP 62180509A JP 18050987 A JP18050987 A JP 18050987A JP S6423149 A JPS6423149 A JP S6423149A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- vtr
- electrode
- dew condensation
- metallic plate
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Non-Adjustable Resistors (AREA)
Abstract
PURPOSE:To speedily detect dew condensation on a cylinder head of VTR and to improve the accuracy of the printing size of an electrode by providing a couple of electrodes on an electric insulating film on a metal plate and covering the electrode with a humidity sensing film. CONSTITUTION:The metallic plate 1 which has good heat conductivity has nearly the same heat capacity with the cylinder head of VTR, so when dew condensation is caused on the cylinder head, drops of dew are formed on the metal plate 1. The humidity sensing film 5 absorbs the water and its resin swells, so conductive particulates in the resin separate from one another and the electric resistance value between the couple of electrodes 4 increase, so the dew condensation on the cylinder head of VTR can be detected from the output of a lead line 6. Further, the metallic plate 1 is used as the substrate of a humidity sensor, which is fixed strongly to the metallic plate 1 with screws, thereby improving the accuracy of the printing size of the electrode 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62180509A JPS6423149A (en) | 1987-07-20 | 1987-07-20 | Humidity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62180509A JPS6423149A (en) | 1987-07-20 | 1987-07-20 | Humidity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6423149A true JPS6423149A (en) | 1989-01-25 |
Family
ID=16084490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62180509A Pending JPS6423149A (en) | 1987-07-20 | 1987-07-20 | Humidity sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6423149A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320469A (en) * | 2018-01-19 | 2018-07-24 | 郑州云海信息技术有限公司 | A kind of server humidity conditioner |
| JP2018165704A (en) * | 2017-03-28 | 2018-10-25 | アルプス電気株式会社 | Frost detector |
-
1987
- 1987-07-20 JP JP62180509A patent/JPS6423149A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018165704A (en) * | 2017-03-28 | 2018-10-25 | アルプス電気株式会社 | Frost detector |
| CN108320469A (en) * | 2018-01-19 | 2018-07-24 | 郑州云海信息技术有限公司 | A kind of server humidity conditioner |
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