JPS55106346A - Thermocouple-type gas sensor - Google Patents
Thermocouple-type gas sensorInfo
- Publication number
- JPS55106346A JPS55106346A JP1395779A JP1395779A JPS55106346A JP S55106346 A JPS55106346 A JP S55106346A JP 1395779 A JP1395779 A JP 1395779A JP 1395779 A JP1395779 A JP 1395779A JP S55106346 A JPS55106346 A JP S55106346A
- Authority
- JP
- Japan
- Prior art keywords
- thermocouples
- exhaust gas
- secure
- electromotive force
- catalyst
- 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 Using Thermal Means (AREA)
Abstract
PURPOSE: To secure detection for the CO comcentration in the gas by providing two units of thermocouples to the concave substrate, forming the catalyst layer to one of the thermocouples to secure the heat generation through the contact to the exhaust gas, and then detecting the differential thermal electromotive force caused by the temperature difference between the both thermocouples.
CONSTITUTION: The heating element is buried at the middle part of concave substrate 1 of the CO concentration detecting gas sensor for the engine exhaust gas. At the same time, thermocouples 2a and 2b are provided at arm parts 1a and 1b of substrate 1, and the coating layer is formed over the thermocouples. And catalyst 4 is held on coating layer 7b of thermocouple 2a to secure the reaction to CO. When the exhaust gas touches the sensor element, the catalyst reaction is caused at part 1b to generate the heat. And then the differential thermal electromotive force is generated between output terminals 3a and 3c due to the temperature difference between thermocouples 2a and 2b. Then the output of the electromotive force is detected in order to secure detection for the CO concentration in the exhaust gas.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1395779A JPS55106346A (en) | 1979-02-09 | 1979-02-09 | Thermocouple-type gas sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1395779A JPS55106346A (en) | 1979-02-09 | 1979-02-09 | Thermocouple-type gas sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55106346A true JPS55106346A (en) | 1980-08-15 |
Family
ID=11847683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1395779A Pending JPS55106346A (en) | 1979-02-09 | 1979-02-09 | Thermocouple-type gas sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55106346A (en) |
-
1979
- 1979-02-09 JP JP1395779A patent/JPS55106346A/en active Pending
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