GB554985A - Improvements relating to the detection or determination of the quantity of suspended solid matter in gas streams - Google Patents
Improvements relating to the detection or determination of the quantity of suspended solid matter in gas streamsInfo
- Publication number
- GB554985A GB554985A GB109342A GB109342A GB554985A GB 554985 A GB554985 A GB 554985A GB 109342 A GB109342 A GB 109342A GB 109342 A GB109342 A GB 109342A GB 554985 A GB554985 A GB 554985A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stream
- chamber
- subsidiary
- detecting
- particles
- 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
- 238000001514 detection method Methods 0.000 title abstract 2
- 239000007787 solid Substances 0.000 title 1
- 239000002245 particle Substances 0.000 abstract 3
- 239000000779 smoke Substances 0.000 abstract 2
- 230000005686 electrostatic field Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (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 Analysing Materials By Optical Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
554,985. Fire alarms. BRITISH ELECTRI-' CON (LONDON) Ltd., and CHAMBERS, W. A. Jan. 26, 1942, No. 1093. [Class 118 (i)] [Also in Groups XX and XL] An apparatus for detecting or measuring suspended matter in a stream of gas (for example, for detecting smoke in a stream of air drawn from the hold of a ship) is provided with means for setting up one or more electrostatic fields by which suspended particles are caused to move transversely to the stream, and with means for detecting or measuring the concentration of particles thus moved. As shown, the air stream is drawn through 'a chamber having an inlet 1 and outlet 2 of insulated material connected by a metallic wall 7. An insulated. wire electrode 3 extends down the centre of the chamber and is surrounded by a cylindrical grid electrode 8 of gauze. A large potential difference is maintained between the electrodes 3 and 7 and the grid is maintained at an intermediate potential. The air passing through the chamber is thus divided into a main inner stream and a subsidiary outer stream the subsidiary stream issuing through outlets 13. The electrostatic action moves the smoke particles into the outer stream where they may be detected by a photo-electric cell 15 illuminated by a lamp 16 and mirrors 17, 18. In a modification, the subsidiary stream may pass through a visual detection cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB109342A GB554985A (en) | 1942-01-26 | 1942-01-26 | Improvements relating to the detection or determination of the quantity of suspended solid matter in gas streams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB109342A GB554985A (en) | 1942-01-26 | 1942-01-26 | Improvements relating to the detection or determination of the quantity of suspended solid matter in gas streams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB554985A true GB554985A (en) | 1943-07-28 |
Family
ID=9716027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB109342A Expired GB554985A (en) | 1942-01-26 | 1942-01-26 | Improvements relating to the detection or determination of the quantity of suspended solid matter in gas streams |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB554985A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422540A2 (en) * | 1989-10-09 | 1991-04-17 | Battelle-Institut e.V. | Arrangement for the measurement of the proportion of asbestos dust in air |
| CN104181087A (en) * | 2014-09-02 | 2014-12-03 | 国电科学技术研究院 | System and method applicable to detecting wet fire coal smoke fine particles |
-
1942
- 1942-01-26 GB GB109342A patent/GB554985A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422540A2 (en) * | 1989-10-09 | 1991-04-17 | Battelle-Institut e.V. | Arrangement for the measurement of the proportion of asbestos dust in air |
| EP0422540A3 (en) * | 1989-10-09 | 1992-04-08 | Battelle-Institut E.V. | Arrangement for the measurement of the proportion of asbestos dust in air |
| CN104181087A (en) * | 2014-09-02 | 2014-12-03 | 国电科学技术研究院 | System and method applicable to detecting wet fire coal smoke fine particles |
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