GB716031A - Improvements in the manufacture of gas detecting apparatus - Google Patents
Improvements in the manufacture of gas detecting apparatusInfo
- Publication number
- GB716031A GB716031A GB17080/51A GB1708051A GB716031A GB 716031 A GB716031 A GB 716031A GB 17080/51 A GB17080/51 A GB 17080/51A GB 1708051 A GB1708051 A GB 1708051A GB 716031 A GB716031 A GB 716031A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact members
- platinum
- deposit
- wadding
- per cent
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 4
- 229910052697 platinum Inorganic materials 0.000 abstract 3
- 230000001681 protective effect Effects 0.000 abstract 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 2
- 239000002775 capsule Substances 0.000 abstract 2
- 239000003610 charcoal Substances 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 229910052748 manganese Inorganic materials 0.000 abstract 2
- 239000011572 manganese Substances 0.000 abstract 2
- 229910052763 palladium Inorganic materials 0.000 abstract 2
- 229910052624 sepiolite Inorganic materials 0.000 abstract 2
- 235000019355 sepiolite Nutrition 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 235000013162 Cocos nucifera Nutrition 0.000 abstract 1
- 244000060011 Cocos nucifera Species 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012494 Quartz wool Substances 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 150000002940 palladium Chemical class 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/44—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid
- G01N25/46—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid for investigating the composition of gas mixtures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (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)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
<PICT:0716031/III/1> An apparatus for indicating the presence of oxidizable gases comprises catalytic contact members surrounding a heat responsive electrical element for operating danger signals, a protective gas filter surrounding the contact members, separated therefrom by an air gap and a capsule for keeping out dust and moisture drawn over the whole assembly, the contact members having been treated with a solution of platinum or palladium salts under the influence of supersonic vibrations to deposit 3 to 5 per cent. of platinum or palladium in or on the contact members. The protective filter may consist of charcoal impregnated under supersonic action with suitable solutions to deposit 5 to 10 per cent. of silver, manganese or copper thereon. In the Figure, meerschaum or coconut shell rings 1 surround a central tube 8 containing the heat responsive element, and are separated from each other by asbestos or quartz wool wadding 2. Both rings and wadding are impregnated with platinum or palladium solutions under supersonic action, e.g. at 10,000 hertz at an intensity of 10 watts/cms2 for 30 minutes. A perforated cage 3 surrounds the rings and wadding and is spaced from an outer mesh cylinder 5 by spacing frame 4. The protective filter 6, which absorbs contact poisons, particularly carbon monoxide, consists of charcoal or meerschaum granules treated as above to deposit 5-10 per cent. of silver, manganese or copper thereon, and cleansed by heating in hydrogen at 120 DEG C. The whole device is enclosed in a capsule 7 of permeable ceramic material. Specification 464,798 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE716031X | 1951-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB716031A true GB716031A (en) | 1954-09-29 |
Family
ID=6626334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17080/51A Expired GB716031A (en) | 1951-03-20 | 1951-07-18 | Improvements in the manufacture of gas detecting apparatus |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE504805A (en) |
| FR (1) | FR1039922A (en) |
| GB (1) | GB716031A (en) |
-
0
- BE BE504805D patent/BE504805A/xx unknown
-
1951
- 1951-07-18 FR FR1039922D patent/FR1039922A/en not_active Expired
- 1951-07-18 GB GB17080/51A patent/GB716031A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1039922A (en) | 1953-10-12 |
| BE504805A (en) |
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