JPS5483500A - Gas detecting device - Google Patents
Gas detecting deviceInfo
- Publication number
- JPS5483500A JPS5483500A JP15195177A JP15195177A JPS5483500A JP S5483500 A JPS5483500 A JP S5483500A JP 15195177 A JP15195177 A JP 15195177A JP 15195177 A JP15195177 A JP 15195177A JP S5483500 A JPS5483500 A JP S5483500A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cap
- gas
- metallic material
- detecting element
- 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 Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To shorten the time from start of energization of the detecting device until reaching the stable operation, by disposing valve made of thermomemory type metallic material in the cap to cover the gas detecting element which is heated while in operation.
CONSTITUTION: A gas detecting element 1 made of oxide semiconductor having a heater 2 disposed in the vicinity thereof is covered with an explosionproof seal 3 and a cap 4. A valve 5 made of thermomemory type metallic material having relatively low martensite transformation temperature, such as Cu-Zn-Si alloy, is disposed in the cap 4 in a freely opening and closing manner. While no power is fed, the valve 5 is positioned as indicated by the imaginary line and the cap 4 is closed. When power is fed into the detector, the element 1 is heated by the heater 2, and the temperature of the valve 5 rises at the same time until exceeding the transformation temperature of the metallic material. Then, the valve 5 is displaced suddenly to occupy the position indicated by solid line, so that the gas being measured is allowed to flow freely into the device. Therefore, while not in use, the detecting element 1 is shielded from the atmosphere, and is free from contamination due to gas occlusion, so that the stable operation state may be achieved promptly.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15195177A JPS6036016B2 (en) | 1977-12-15 | 1977-12-15 | gas detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15195177A JPS6036016B2 (en) | 1977-12-15 | 1977-12-15 | gas detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5483500A true JPS5483500A (en) | 1979-07-03 |
JPS6036016B2 JPS6036016B2 (en) | 1985-08-17 |
Family
ID=15529760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15195177A Expired JPS6036016B2 (en) | 1977-12-15 | 1977-12-15 | gas detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6036016B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0424891Y2 (en) * | 1985-06-10 | 1992-06-12 | ||
JPH0424890Y2 (en) * | 1986-02-14 | 1992-06-12 |
-
1977
- 1977-12-15 JP JP15195177A patent/JPS6036016B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6036016B2 (en) | 1985-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5483500A (en) | Gas detecting device | |
JPS53122239A (en) | Dew condensation preventive control apparatus for articles stored in storage warehouse | |
JPS5594121A (en) | Overheating detector for rotary regenerative heat exchanger | |
JPS5374474A (en) | Thermocoupl | |
JPS5451372A (en) | Sampler of scanning electron microscope of the like | |
JPS547288A (en) | Observation window for sealed container | |
JPS5643514A (en) | Liquid level and temperature detector of liquid metal | |
JPS5465552A (en) | Contact heating type fixing device | |
JPS5528480A (en) | Gas heater | |
JPS527796A (en) | Gas detector | |
JPS57112623A (en) | Thermosensitive device of cooking apparatus | |
JPS5280893A (en) | Gas detector | |
JPS57116973A (en) | Shaft seal device of hot gas engine | |
JPS5515207A (en) | Ultra conduction device | |
JPS5482296A (en) | Gas detector | |
JPS5378877A (en) | Cleaning control system for temperature sensor | |
JPS52138196A (en) | Gas detecting element | |
JPS56150358A (en) | Wind sensor | |
JPS51148833A (en) | Detecting device for gas leakage | |
JPS5479843A (en) | Safety device for electric heater | |
JPS5216297A (en) | Gas detecting element equipped with temperature correction elemet usin g "n" type metal oxide | |
JPS52106140A (en) | High frequency heating device | |
JPS51141695A (en) | Gas detecting device | |
JPS5666716A (en) | Temperature sensor | |
JPS52109983A (en) | Precise thermostable bath |