GB1259566A - - Google Patents
Info
- Publication number
- GB1259566A GB1259566A GB1259566DA GB1259566A GB 1259566 A GB1259566 A GB 1259566A GB 1259566D A GB1259566D A GB 1259566DA GB 1259566 A GB1259566 A GB 1259566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- detecting
- resistance
- metal oxide
- reducing gas
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3394970 | 1970-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1259566A true GB1259566A (de) | 1972-01-05 |
Family
ID=10359468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1259566D Expired GB1259566A (de) | 1970-07-13 | 1970-07-13 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1259566A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4080564A (en) * | 1975-10-02 | 1978-03-21 | Matsushita Electric Industrial Co., Ltd. | Humidity sensitive resistor device |
EP1790978A1 (de) * | 2005-11-23 | 2007-05-30 | Therm-o-Disc Incorporated | Temperaturkompensierter Dampfsensor |
-
1970
- 1970-07-13 GB GB1259566D patent/GB1259566A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4080564A (en) * | 1975-10-02 | 1978-03-21 | Matsushita Electric Industrial Co., Ltd. | Humidity sensitive resistor device |
EP1790978A1 (de) * | 2005-11-23 | 2007-05-30 | Therm-o-Disc Incorporated | Temperaturkompensierter Dampfsensor |
US7265560B2 (en) | 2005-11-23 | 2007-09-04 | Therm-O-Disc, Incorporated | Temperature compensated vapor sensor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1257155A (de) | ||
US3631436A (en) | Gas-detecting device | |
GB1023231A (en) | Improvements in and relating to gas detecting devices | |
GB980169A (en) | Improvements in and relating to gas detecting apparatus | |
US3600650A (en) | Protected semiconductor device having sensor thermally coupled to electrode | |
US3543056A (en) | Proximity detection system using field effect transistors | |
GB1024201A (en) | Electronic alarm system | |
US3909815A (en) | Detector for fumes and combustion gases | |
GB1259566A (de) | ||
SE408736B (sv) | Hogimpedanskretsanordning med joniseringsrokkennare | |
GB1375389A (de) | ||
FR1454765A (fr) | Perfectionnements apportés aux détecteurs électriques de vapeurs | |
JPS6225988B2 (de) | ||
GB988106A (en) | Condition responsive system | |
JPS5734446A (en) | Nultifunctional detecting element and multifunctional detector | |
FR2087004A5 (en) | Gas detector using semi-conductor with gasre | |
GB1489687A (en) | Devices responsive to the presence of carbon monoxide and in methods for their manufacture | |
GB1282993A (en) | Gas detecting devices | |
JPS5237494A (en) | Gas, smoke detection device | |
GB1405492A (en) | Dewpoint recorder | |
GB1457748A (en) | Method of operation of a varistor | |
KR890002806B1 (ko) | 유해연탄가스(co) 감지방법 | |
CA1065018A (en) | Battery voltage detection and warning means | |
GB1021570A (en) | Apparatus for detecting heat protected against false actuation | |
GB1124746A (en) | A fail-safe checking system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |