GB451678A - Improvements in the detection of the presence of combustible gases in the atmosphere - Google Patents
Improvements in the detection of the presence of combustible gases in the atmosphereInfo
- Publication number
- GB451678A GB451678A GB443935A GB443935A GB451678A GB 451678 A GB451678 A GB 451678A GB 443935 A GB443935 A GB 443935A GB 443935 A GB443935 A GB 443935A GB 451678 A GB451678 A GB 451678A
- Authority
- GB
- United Kingdom
- Prior art keywords
- atmosphere
- filament
- detection
- combustible gas
- combustible gases
- 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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/716—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited by measuring the radiation emitted by a test object treated by combustion gases for investigating the composition of gas mixtures
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (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 Electric Means (AREA)
Abstract
<PICT:0451678/III/1> A device for detecting combustible gas in the atmosphere by means of the increased luminosity of a heated filament comprises a pair of matched filaments connected in parallel to a source of current, one filament 13 being exposed to the gas and the other 20 protected from it, and two photo-electric cells 18, 22 irradiated by the respective filaments and connected in opposed series relationship. The instrument is calibrated so that a galvanometer 19 in series with the cells gives a zero reading when combustible gas is absent. According to the Provisional Specification the sealed filament and the corresponding photo-electric cell may be omitted. Specification 440,947 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB443935A GB451678A (en) | 1935-02-12 | 1935-02-12 | Improvements in the detection of the presence of combustible gases in the atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB443935A GB451678A (en) | 1935-02-12 | 1935-02-12 | Improvements in the detection of the presence of combustible gases in the atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB451678A true GB451678A (en) | 1936-08-10 |
Family
ID=9777198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB443935A Expired GB451678A (en) | 1935-02-12 | 1935-02-12 | Improvements in the detection of the presence of combustible gases in the atmosphere |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB451678A (en) |
-
1935
- 1935-02-12 GB GB443935A patent/GB451678A/en not_active Expired
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