JPS6420439A - Humidity sensible element - Google Patents
Humidity sensible elementInfo
- Publication number
- JPS6420439A JPS6420439A JP17493687A JP17493687A JPS6420439A JP S6420439 A JPS6420439 A JP S6420439A JP 17493687 A JP17493687 A JP 17493687A JP 17493687 A JP17493687 A JP 17493687A JP S6420439 A JPS6420439 A JP S6420439A
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- humidity sensible
- small
- sensible
- high polymer
- 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 Electric Means (AREA)
Abstract
PURPOSE:To decrease a drift in a state that it is contrived to secure the sensitivity as a humidity sensible element, by forming a humidity sensible film by using a high polymer consisting essentially of ethyl cellulose. CONSTITUTION:A humidity sensible film 3 is formed by a humidity sensible material consisting essentially of ethyl cellulose EC especially, in a cellulose ether high polymer. The humidity sensible film 3 has the quality whose dielectric constant becomes large, although its adsorption moisture quantity is small, since the main component is EC. That is, as far as the EC is concerned, its adsorption site is much smaller or its hydrophilic property is weaker than an organic high polymer such as CAB, CAP, PAI, etc. The adsorption moisture quantity of the EC is a value which can secure enough the hydrophilic property being suitable for using it as a humidity sensible element of a capacity type, and also, since its adsorption moisture quantity is small, a more stable (drift is small) humidity sensible characteristic than a sensor on the market, using the CAB can be obtained with small hysteresis and with high response.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17493687A JPS6420439A (en) | 1987-07-15 | 1987-07-15 | Humidity sensible element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17493687A JPS6420439A (en) | 1987-07-15 | 1987-07-15 | Humidity sensible element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6420439A true JPS6420439A (en) | 1989-01-24 |
Family
ID=15987315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17493687A Pending JPS6420439A (en) | 1987-07-15 | 1987-07-15 | Humidity sensible element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6420439A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02212745A (en) * | 1989-02-13 | 1990-08-23 | Sanyo Electric Co Ltd | Semiconductor moisture sensor |
JPH03167463A (en) * | 1989-11-27 | 1991-07-19 | Yamatake Honeywell Co Ltd | Moisture sensitive element |
US7977509B2 (en) | 2007-04-25 | 2011-07-12 | Hoffmann-La Roche Inc. | Process for the preparation of acid halides |
-
1987
- 1987-07-15 JP JP17493687A patent/JPS6420439A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02212745A (en) * | 1989-02-13 | 1990-08-23 | Sanyo Electric Co Ltd | Semiconductor moisture sensor |
JPH03167463A (en) * | 1989-11-27 | 1991-07-19 | Yamatake Honeywell Co Ltd | Moisture sensitive element |
US7977509B2 (en) | 2007-04-25 | 2011-07-12 | Hoffmann-La Roche Inc. | Process for the preparation of acid halides |
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