JPS54140598A - Detector of heat conduction type - Google Patents
Detector of heat conduction typeInfo
- Publication number
- JPS54140598A JPS54140598A JP4774078A JP4774078A JPS54140598A JP S54140598 A JPS54140598 A JP S54140598A JP 4774078 A JP4774078 A JP 4774078A JP 4774078 A JP4774078 A JP 4774078A JP S54140598 A JPS54140598 A JP S54140598A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- filament
- detector
- influence
- heat conduction
- 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
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To make it possible to prevent gas leakage, while eliminating the influence from the heat, by welding a filament holder to the opening of one chamber of a detecting body, into which gases to be detected are introduced, thereby to seal the filament and by constricting the vicinity of the opening.
CONSTITUTION: A detector body 15 is formed with a thin flange 16 and a constriction 16 therebelow. The two detector bodies 15 thus constructed are respectively formed with cylindrical chambers 13, in which a filament 3 held by a hermetical seal 10 is made to extend. Those bodies 15 are made to have communication through a communication pipe 5 threreby to constitute a heat conduction type detector 20. The outer circumference of the flange 16 is fixedly welded to that of a welded portion 9. Thanks to the flanged portion 14, the heat conduction to the body 15 during the welding operation is reduced. Since the flanged portion 16 acts as a heat radiator, the influence of the heat during the welding operation can be reduced. As a result, the heat influence upon the filament 3 can be eliminated, and the hermetical seal 0 can be prevented from bein broken.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4774078A JPS5832345B2 (en) | 1978-04-24 | 1978-04-24 | Thermal conductivity type detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4774078A JPS5832345B2 (en) | 1978-04-24 | 1978-04-24 | Thermal conductivity type detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54140598A true JPS54140598A (en) | 1979-10-31 |
JPS5832345B2 JPS5832345B2 (en) | 1983-07-12 |
Family
ID=12783737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4774078A Expired JPS5832345B2 (en) | 1978-04-24 | 1978-04-24 | Thermal conductivity type detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832345B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6296569U (en) * | 1986-11-18 | 1987-06-19 | ||
JPH0443263U (en) * | 1990-08-17 | 1992-04-13 |
-
1978
- 1978-04-24 JP JP4774078A patent/JPS5832345B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5832345B2 (en) | 1983-07-12 |
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