GB1184184A - Improvements in or relating to Electrically Heatable Filaments - Google Patents
Improvements in or relating to Electrically Heatable FilamentsInfo
- Publication number
- GB1184184A GB1184184A GB3356966A GB3356966A GB1184184A GB 1184184 A GB1184184 A GB 1184184A GB 3356966 A GB3356966 A GB 3356966A GB 3356966 A GB3356966 A GB 3356966A GB 1184184 A GB1184184 A GB 1184184A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- refractory material
- gas impermeable
- layer
- july
- 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
- 239000011521 glass Substances 0.000 abstract 6
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000011819 refractory material Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 1
- -1 B 2 O 3 Inorganic materials 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- 239000011876 fused mixture Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 239000002574 poison Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- VGBPIHVLVSGJGR-UHFFFAOYSA-N thorium(4+);tetranitrate Chemical compound [Th+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VGBPIHVLVSGJGR-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
-
- 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
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
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)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1,184,184. Electric heating elements. NATIONAL RESEARCH DEVELOPMENT CORP. 26 July, 1967 [26 July, 1966], No. 33569/66. Addition to 892,530. Heading H5H. [Also in Division G1] The electrically heatable element, for detecting combustible gas, of the parent Specification, is modified by using gas impermeable glass as the refractory material in which the platinum heating wire 1 is embedded, by using a gas impermeable fused mixture of glass and conventional refractory material, e.g. alumina or silica, or by coating the conventional refractory material 2 with a gas impermeable glass layer 3. The glass composition is SiO 2 , Al 2 O 3 , B 2 O 3 , CaO, BaO. The catalytic outer layer 4 may be made from a solution of thorium nitrate and ammonium chloropalladite in nitric acid which may be used alone or on top of a layer formed from a solution of ammonium chloropalladite in nitric acid. The glass should have a softening temperature below 1500‹ C. to prevent damage to the heating wire during formation of the heating element. The glass should not contain materials which might poison the catalyst layer 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3356966A GB1184184A (en) | 1966-07-26 | 1966-07-26 | Improvements in or relating to Electrically Heatable Filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3356966A GB1184184A (en) | 1966-07-26 | 1966-07-26 | Improvements in or relating to Electrically Heatable Filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1184184A true GB1184184A (en) | 1970-03-11 |
Family
ID=10354642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3356966A Expired GB1184184A (en) | 1966-07-26 | 1966-07-26 | Improvements in or relating to Electrically Heatable Filaments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1184184A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2855169A1 (en) * | 1977-12-21 | 1979-07-05 | Ato Inc | DETECTOR DEVICE WITH PALLADIUM OXIDE CATALYST AND PROCESS FOR THEIR PRODUCTION |
| DE3122662A1 (en) * | 1980-06-11 | 1982-04-01 | Mine Safety Appliances Co. Ltd., Reading, Berkshire | Electrically heatable element and method of producing it |
-
1966
- 1966-07-26 GB GB3356966A patent/GB1184184A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2855169A1 (en) * | 1977-12-21 | 1979-07-05 | Ato Inc | DETECTOR DEVICE WITH PALLADIUM OXIDE CATALYST AND PROCESS FOR THEIR PRODUCTION |
| DE3122662A1 (en) * | 1980-06-11 | 1982-04-01 | Mine Safety Appliances Co. Ltd., Reading, Berkshire | Electrically heatable element and method of producing it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE | Patent expired |