CH671842A5 - - Google Patents
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- Publication number
- CH671842A5 CH671842A5 CH2072/86A CH207286A CH671842A5 CH 671842 A5 CH671842 A5 CH 671842A5 CH 2072/86 A CH2072/86 A CH 2072/86A CH 207286 A CH207286 A CH 207286A CH 671842 A5 CH671842 A5 CH 671842A5
- Authority
- CH
- Switzerland
- Prior art keywords
- radiation
- window
- test
- sensitive component
- sensor
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 135
- 238000012360 testing method Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004880 explosion Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 claims 2
- 230000003749 cleanliness Effects 0.000 description 14
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
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)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08513419A GB2175686A (en) | 1985-05-28 | 1985-05-28 | Fire or explosion detection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH671842A5 true CH671842A5 (enExample) | 1989-09-29 |
Family
ID=10579767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH2072/86A CH671842A5 (enExample) | 1985-05-28 | 1986-05-22 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4728794A (enExample) |
| CH (1) | CH671842A5 (enExample) |
| DE (1) | DE3617160A1 (enExample) |
| GB (3) | GB2175686A (enExample) |
| NO (1) | NO862094L (enExample) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4826316A (en) * | 1987-05-29 | 1989-05-02 | Detector Electronics Corporation | Radiation detection apparatus |
| GB8829892D0 (en) * | 1988-12-22 | 1989-09-13 | Racal Guardall Scotland | Radiation detection arrangements and methods |
| DE3924250A1 (de) * | 1989-07-21 | 1991-02-07 | Preussag Ag Feuerschutz | Branddetektor |
| US5130546A (en) * | 1990-10-17 | 1992-07-14 | Kaman Aerospace Corporation | Reduction of undesired hyperfine line absorption in optical resonance filters |
| NL1003500C2 (nl) * | 1996-07-04 | 1998-01-07 | Aritech Bv | Bewakingssysteem met lichtgeleidende middelen. |
| US5914489A (en) * | 1997-07-24 | 1999-06-22 | General Monitors, Incorporated | Continuous optical path monitoring of optical flame and radiation detectors |
| US5812270A (en) * | 1997-09-17 | 1998-09-22 | Ircon, Inc. | Window contamination detector |
| GB2396943A (en) | 2003-01-03 | 2004-07-07 | Apollo Fire Detectors Ltd | Hazard detector |
| US7244946B2 (en) * | 2004-05-07 | 2007-07-17 | Walter Kidde Portable Equipment, Inc. | Flame detector with UV sensor |
| 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 |
| ES2395984T3 (es) | 2010-04-26 | 2013-02-18 | Minimax Gmbh & Co Kg | Procedimiento y dispositivo para limpiar una pantalla de inspección de un avisador de incendios |
| US9123222B2 (en) | 2012-03-15 | 2015-09-01 | Ninve Jr. Inc. | Apparatus and method for detecting tampering with an infra-red motion sensor |
| JP5952614B2 (ja) * | 2012-03-30 | 2016-07-13 | 能美防災株式会社 | 煙感知器 |
| SI2887330T1 (sl) | 2013-12-17 | 2017-04-26 | Minimax Gmbh & Co. Kg | Postopek in naprava za čiščenje okna optičnega vhoda požarnega alarma |
| DE202013012395U1 (de) | 2013-12-17 | 2016-09-05 | Minimax Gmbh & Co. Kg | Vorrichtung zum Reinigen eines optischen Eintrittsfensters |
| ES3021261T3 (en) * | 2016-07-05 | 2025-05-26 | Ott Hydromet B V | Method and device determining soiling of a shield |
| NL2017108B1 (en) * | 2016-07-05 | 2018-01-12 | Kipp & Zonen B V | Method and device determining soiling of a shield |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE754420A (fr) * | 1969-08-06 | 1971-01-18 | Degussa | Procede pour la preparation de 4-ureidohexahydropyrimidinone -(2) |
| US3903422A (en) * | 1974-06-14 | 1975-09-02 | Gte Laboratories Inc | Digital fluorometer |
| US3952196A (en) * | 1975-02-05 | 1976-04-20 | Detector Electronics Corporation | Radiation detection apparatus |
| DE2833635C2 (de) * | 1978-08-01 | 1983-05-05 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur Messung der Verschmutzung von optischen Grenzflächen bei optischen Empfängern und Einrichtung zur Durchführung des Verfahrens |
| US4560874A (en) * | 1981-06-02 | 1985-12-24 | Santa Barbara Research Center | Reference channel for sensing optical contamination |
| IN158131B (enExample) * | 1981-06-02 | 1986-09-13 | Santa Barbara Res Center | |
| EP0078443A3 (en) * | 1981-10-30 | 1984-11-28 | Armtec Industries, Inc. | Fire detection system |
| CH665915A5 (de) * | 1981-11-13 | 1988-06-15 | Paul Kovacs | Vorrichtung zur ueberwachung der eisbildung. |
| US4529881A (en) * | 1982-03-02 | 1985-07-16 | Pyrotector, Inc. | Flame detector with test lamp and adjustable field of view |
| JPS58182519A (ja) * | 1982-04-20 | 1983-10-25 | Toshiba Corp | 熱塊検出器 |
| GB2141228B (en) * | 1983-06-09 | 1987-01-07 | Shorrock Security Systems Ltd | Infra-red intrusion detector |
-
1985
- 1985-05-28 GB GB08513419A patent/GB2175686A/en not_active Withdrawn
-
1986
- 1986-05-15 GB GB868611848A patent/GB8611848D0/en active Pending
- 1986-05-22 DE DE19863617160 patent/DE3617160A1/de not_active Withdrawn
- 1986-05-22 CH CH2072/86A patent/CH671842A5/de not_active IP Right Cessation
- 1986-05-22 GB GB8612521A patent/GB2175689B/en not_active Expired
- 1986-05-23 US US06/866,481 patent/US4728794A/en not_active Expired - Lifetime
- 1986-05-27 NO NO862094A patent/NO862094L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB8611848D0 (en) | 1986-06-25 |
| DE3617160A1 (de) | 1986-12-04 |
| GB8513419D0 (en) | 1985-07-03 |
| NO862094L (no) | 1986-12-01 |
| GB2175689A (en) | 1986-12-03 |
| GB2175689B (en) | 1989-07-05 |
| GB2175686A (en) | 1986-12-03 |
| US4728794A (en) | 1988-03-01 |
| GB8612521D0 (en) | 1986-07-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PFA | Name/firm changed |
Owner name: KIDDE-GRAVINER LIMITED |
|
| PL | Patent ceased | ||
| PL | Patent ceased |