JPS55155241A - Gas detector - Google Patents
Gas detectorInfo
- Publication number
- JPS55155241A JPS55155241A JP6367879A JP6367879A JPS55155241A JP S55155241 A JPS55155241 A JP S55155241A JP 6367879 A JP6367879 A JP 6367879A JP 6367879 A JP6367879 A JP 6367879A JP S55155241 A JPS55155241 A JP S55155241A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- temperature
- gas
- detection
- compensation
- 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
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
PURPOSE: To eliminate the initial malfunctioning in gas detection by means of a compensation resistor indicating positive resistance temperature characteristic at low temperature connected in series to the gas sensitive body.
CONSTITUTION: A compensation resistance element 4 employing α-Fe2O3 or the like indicating the positive resistance temperature characteristic at the temperature lower than the normal working temperature (250W450°C) is connected in series with the gas detector 3 emplaying α-Fe2O3 or the like. When a switch 1 is closed to apply the voltage to heaters 2 and 2' at a level equipvalent to the normal temperature, the detection element 3 and the compensation element 4 indicated changes in the resistance value respectively, and settle for a resistance level equivalent to the normal temperature. The detection of gas by the composite resistance eliminates the cause of the initial malfunctioning.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6367879A JPS55155241A (en) | 1979-05-23 | 1979-05-23 | Gas detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6367879A JPS55155241A (en) | 1979-05-23 | 1979-05-23 | Gas detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155241A true JPS55155241A (en) | 1980-12-03 |
Family
ID=13236253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6367879A Pending JPS55155241A (en) | 1979-05-23 | 1979-05-23 | Gas detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155241A (en) |
-
1979
- 1979-05-23 JP JP6367879A patent/JPS55155241A/en active Pending
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