GB0219418D0 - Test source for flame detectors - Google Patents
Test source for flame detectorsInfo
- Publication number
- GB0219418D0 GB0219418D0 GBGB0219418.1A GB0219418A GB0219418D0 GB 0219418 D0 GB0219418 D0 GB 0219418D0 GB 0219418 A GB0219418 A GB 0219418A GB 0219418 D0 GB0219418 D0 GB 0219418D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- tube
- gases
- nickel
- mixture
- 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.)
- Ceased
Links
- 239000007789 gas Substances 0.000 abstract 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000570 Cupronickel Inorganic materials 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 238000011016 integrity testing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 239000010980 sapphire Substances 0.000 abstract 1
- 230000004936 stimulating effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Control Of Combustion (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire Alarms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
An infrared discharge tube is disclosed, the tube having a body (1) formed from a material, typically sapphire, generally transparent to infrared radiation of between 4 µm and 5 µm, and electrodes (2, 3) formed from a non-reactive or catalytic metal, such as nickel, cupro-nickel or oxidised copper. The body (1) forms a gas tight enclosure, and is evacuated of air and refilled with a mixture of carbon monoxide, carbon dioxide and nitrogen gas. The proportions and pressures of gases in the body (1) are adjusted depending upon the intended use of the source, but are generally in the order of 100mBar for a low energy source capable of stimulating a detector (for example in the case of optical integrity testing), and may be several tens of Bar for a high energy source suitable for use over several tens of metres. The tube is then sealed, and when a high voltage is applied between electrodes (2, 3) an arc is generated across a spark gap (4) between electrodes (2, 3). The metal of the electrodes (2, 3) is chosen so as to resist changes in relative proportions of the constituent gases of the mixture of gases in the tube.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0219418.1A GB0219418D0 (en) | 2002-08-21 | 2002-08-21 | Test source for flame detectors |
| AT03792456T ATE336771T1 (en) | 2002-08-21 | 2003-07-31 | FLAME DETECTOR TEST SOURCE |
| PCT/GB2003/003323 WO2004019298A2 (en) | 2002-08-21 | 2003-07-31 | Test source for flame detectors |
| AU2003246976A AU2003246976A1 (en) | 2002-08-21 | 2003-07-31 | Test source for flame detectors |
| EP03792456A EP1530786B1 (en) | 2002-08-21 | 2003-07-31 | Test source for flame detectors |
| DE60307648T DE60307648D1 (en) | 2002-08-21 | 2003-07-31 | TEST SOURCE FOR FLAME DETECTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0219418.1A GB0219418D0 (en) | 2002-08-21 | 2002-08-21 | Test source for flame detectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB0219418D0 true GB0219418D0 (en) | 2002-09-25 |
Family
ID=9942673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0219418.1A Ceased GB0219418D0 (en) | 2002-08-21 | 2002-08-21 | Test source for flame detectors |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1530786B1 (en) |
| AT (1) | ATE336771T1 (en) |
| AU (1) | AU2003246976A1 (en) |
| DE (1) | DE60307648D1 (en) |
| GB (1) | GB0219418D0 (en) |
| WO (1) | WO2004019298A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2426577A (en) * | 2005-05-27 | 2006-11-29 | Thorn Security | An optical detector with a reflector outside of its housing, and a plurality of sensors inside of its housing |
| GB2426578A (en) | 2005-05-27 | 2006-11-29 | Thorn Security | A flame detector having a pulsing optical test source that simulates the frequency of a flame |
| US8493212B2 (en) | 2007-06-15 | 2013-07-23 | Icore and Associates, LLC | Passive microwave system and method for protecting a structure from fire threats |
| US9410849B2 (en) * | 2014-01-21 | 2016-08-09 | Kidde Technologies, Inc. | Apparatuses, systems, and methods controlling testing optical fire detectors |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2823410A1 (en) * | 1978-04-25 | 1979-11-08 | Cerberus Ag | FLAME DETECTOR |
| US4864146A (en) * | 1987-07-23 | 1989-09-05 | Santa Barbara Research Center | Universal fire simulator |
-
2002
- 2002-08-21 GB GBGB0219418.1A patent/GB0219418D0/en not_active Ceased
-
2003
- 2003-07-31 AU AU2003246976A patent/AU2003246976A1/en not_active Abandoned
- 2003-07-31 AT AT03792456T patent/ATE336771T1/en not_active IP Right Cessation
- 2003-07-31 EP EP03792456A patent/EP1530786B1/en not_active Expired - Lifetime
- 2003-07-31 DE DE60307648T patent/DE60307648D1/en not_active Expired - Lifetime
- 2003-07-31 WO PCT/GB2003/003323 patent/WO2004019298A2/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE60307648D1 (en) | 2006-09-28 |
| AU2003246976A8 (en) | 2004-03-11 |
| AU2003246976A1 (en) | 2004-03-11 |
| WO2004019298A2 (en) | 2004-03-04 |
| ATE336771T1 (en) | 2006-09-15 |
| EP1530786B1 (en) | 2006-08-16 |
| WO2004019298A3 (en) | 2004-04-08 |
| EP1530786A2 (en) | 2005-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AT | Applications terminated before publication under section 16(1) |