CA1014637A - Optical particle detector with light scattering test device - Google Patents
Optical particle detector with light scattering test deviceInfo
- Publication number
- CA1014637A CA1014637A CA184,698A CA184698A CA1014637A CA 1014637 A CA1014637 A CA 1014637A CA 184698 A CA184698 A CA 184698A CA 1014637 A CA1014637 A CA 1014637A
- Authority
- CA
- Canada
- Prior art keywords
- test device
- light scattering
- particle detector
- optical particle
- scattering test
- 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
- 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
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
- G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4785—Standardising light scatter apparatus; Standards therefor
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
-
- 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)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US382521A US3868184A (en) | 1973-07-25 | 1973-07-25 | Optical smoke detector with light scattering test device |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1014637A true CA1014637A (en) | 1977-07-26 |
Family
ID=23509319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA184,698A Expired CA1014637A (en) | 1973-07-25 | 1973-10-31 | Optical particle detector with light scattering test device |
Country Status (6)
Country | Link |
---|---|
US (1) | US3868184A (en) |
JP (1) | JPS5711013B2 (en) |
CA (1) | CA1014637A (en) |
DE (1) | DE2355784C2 (en) |
FR (1) | FR2239168A5 (en) |
IT (1) | IT1000974B (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50134172A (en) * | 1974-04-17 | 1975-10-24 | ||
US3985453A (en) * | 1974-07-19 | 1976-10-12 | Matsushita Electric Works, Ltd. | Light scattering type smoke detector |
US4021792A (en) * | 1975-06-23 | 1977-05-03 | Wellen Industries | Smoke alarm |
US4053785A (en) * | 1976-01-07 | 1977-10-11 | General Signal Corporation | Optical smoke detector with smoke effect simulating means |
JPS52141682A (en) * | 1976-05-20 | 1977-11-26 | Matsushita Electric Works Ltd | Sensitivity tester of photoelectric sensor |
JPS533881A (en) * | 1976-07-01 | 1978-01-13 | Matsushita Electric Works Ltd | Sensitivity checking method for scattered light type smoke detector |
US4099178A (en) * | 1977-04-07 | 1978-07-04 | Emdeko International, Inc. | Test means for light responsive smoke detector |
US4166698A (en) * | 1977-06-10 | 1979-09-04 | American District Telegraph Company | Secondary light testing in optical smoke detectors |
US4216377A (en) * | 1977-06-27 | 1980-08-05 | Nittan Company, Limited | Light scattering smoke detector |
JPS5427672U (en) * | 1977-07-25 | 1979-02-23 | ||
US4249082A (en) * | 1977-09-20 | 1981-02-03 | Cybernet Electronics Corporation | Photoelectric smoke sensor box |
CH621640A5 (en) * | 1977-11-21 | 1981-02-13 | Cerberus Ag | |
US4144458A (en) * | 1977-11-29 | 1979-03-13 | Chloride Incorporated | Smoke detector with test means for simulating a predetermined concentration of smoke |
US4144459A (en) * | 1977-11-29 | 1979-03-13 | Chloride Incorporated | Smoke detector with test means for simulating a predetermined percentage of smoke |
SU873041A1 (en) * | 1978-01-24 | 1981-10-15 | Предприятие П/Я А-7555 | Photoelectric transducer |
US4360270A (en) * | 1981-02-17 | 1982-11-23 | Jeck Richard K | Calibration and testing device for optical, single particle, size spectrometers |
CH656474A5 (en) * | 1981-11-11 | 1986-06-30 | Cerberus Ag | SMOKE DETECTOR. |
JPS58170550U (en) * | 1982-05-10 | 1983-11-14 | ホーチキ株式会社 | photoelectric smoke detector |
US5523743A (en) * | 1995-04-13 | 1996-06-04 | Digital Security Controls Ltd. | Self-diagnostic smoke detector |
TW566634U (en) * | 2002-05-13 | 2003-12-11 | Prec Instr Developement Ct Nat | Sensitivity adjustment device of photoelectric smoke detector |
US8232884B2 (en) * | 2009-04-24 | 2012-07-31 | Gentex Corporation | Carbon monoxide and smoke detectors having distinct alarm indications and a test button that indicates improper operation |
US8836532B2 (en) | 2009-07-16 | 2014-09-16 | Gentex Corporation | Notification appliance and method thereof |
DE102009054141A1 (en) | 2009-11-13 | 2011-05-19 | Job Lizenz Gmbh & Co Kg | Method for verifying proper function of smoke detector in inner room of building, involves comparing output signal with reference output signal, and outputting error signal, when output signal falls below reference output signal |
USD770929S1 (en) * | 2014-06-26 | 2016-11-08 | Life Safety Distribution Ag | Optical block |
CN106407514B (en) * | 2016-08-31 | 2020-06-05 | 合肥科斯孚安全科技有限公司 | Double-light-path fire smoke detection smoke chamber optimization design method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2920525A (en) * | 1956-08-13 | 1960-01-12 | Arthur V Appel | Apparatus for automatically counting and sizing airborne particles |
GB923885A (en) * | 1958-10-30 | 1963-04-18 | Courtaulds Ltd | Nephelometers |
DE1115477B (en) * | 1959-08-12 | 1961-10-19 | Lentia Gmbh | Stationary, industrial aerosol measuring device |
US3234846A (en) * | 1959-11-18 | 1966-02-15 | Standard Oil Co | Continuously recording turbidity meter |
US3396387A (en) * | 1962-07-24 | 1968-08-06 | Kidde & Co Walter | Supervised apparatus for detecting suspended matter in fluids |
US3483385A (en) * | 1966-05-09 | 1969-12-09 | Bendix Corp | Apparatus for comparing the surface reflectivity of materials |
US3505529A (en) * | 1968-02-08 | 1970-04-07 | Bliss Co | Radiation sensitive smoke detecting device |
US3702734A (en) * | 1971-05-03 | 1972-11-14 | Saab Scania Ab | Calibration means for instrument for reading dust accumulations on dark slides |
-
1973
- 1973-07-25 US US382521A patent/US3868184A/en not_active Expired - Lifetime
- 1973-10-31 CA CA184,698A patent/CA1014637A/en not_active Expired
- 1973-11-08 DE DE2355784A patent/DE2355784C2/en not_active Expired
- 1973-11-12 JP JP12714673A patent/JPS5711013B2/ja not_active Expired
- 1973-11-19 FR FR7341044A patent/FR2239168A5/fr not_active Expired
- 1973-11-23 IT IT9693/73A patent/IT1000974B/en active
Also Published As
Publication number | Publication date |
---|---|
DE2355784C2 (en) | 1983-10-27 |
FR2239168A5 (en) | 1975-02-21 |
JPS5034874A (en) | 1975-04-03 |
US3868184A (en) | 1975-02-25 |
JPS5711013B2 (en) | 1982-03-02 |
IT1000974B (en) | 1976-04-10 |
DE2355784A1 (en) | 1975-02-06 |
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