FI53521B - - Google Patents
Info
- Publication number
- FI53521B FI53521B FI1709/71A FI170971A FI53521B FI 53521 B FI53521 B FI 53521B FI 1709/71 A FI1709/71 A FI 1709/71A FI 170971 A FI170971 A FI 170971A FI 53521 B FI53521 B FI 53521B
- Authority
- FI
- Finland
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
- G01N21/17—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
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/08—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature with bimetallic element
-
- 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
-
- 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
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
- Outer Garments And Coats (AREA)
- Helmets And Other Head Coverings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE10237/70A SE335080B (fr) | 1970-07-24 | 1970-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI53521B true FI53521B (fr) | 1978-01-31 |
| FI53521C FI53521C (fi) | 1978-05-10 |
Family
ID=20291970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI1709/71A FI53521C (fi) | 1970-07-24 | 1971-06-17 | Roekdetektor foer optisk detektering av foerbraenningsalstrade aerosoler |
Country Status (8)
| Country | Link |
|---|---|
| CH (1) | CH539902A (fr) |
| DE (1) | DE2134563A1 (fr) |
| DK (1) | DK127616B (fr) |
| FI (1) | FI53521C (fr) |
| FR (1) | FR2104804B1 (fr) |
| GB (1) | GB1342266A (fr) |
| NO (1) | NO126936B (fr) |
| SE (1) | SE335080B (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7604502L (sv) * | 1976-04-15 | 1977-10-16 | Ericsson Telefon Ab L M | Optisk branddetektor |
| GB2005404A (en) * | 1977-09-26 | 1979-04-19 | Bendix Corp | "Dust Monitor" |
| GB2272760A (en) * | 1992-11-20 | 1994-05-25 | Thorn Security | Optical detection of combustion products |
| CN107991236B (zh) * | 2017-12-04 | 2020-08-25 | 华北电力大学（保定） | 微生物气溶胶检测装置 |
| CN114018853B (zh) * | 2021-11-24 | 2024-03-26 | 青岛崂应海纳光电环保集团有限公司 | 光度计气室及气体分析模块 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE494410A (fr) * | ||||
| GB715519A (en) * | 1952-08-13 | 1954-09-15 | Kidde Walter Co Ltd | Method and apparatus for detection of smoke |
-
1970
- 1970-07-24 SE SE10237/70A patent/SE335080B/xx unknown
-
1971
- 1971-06-17 FI FI1709/71A patent/FI53521C/fi active
- 1971-07-06 DE DE19712134563 patent/DE2134563A1/de active Pending
- 1971-07-15 GB GB3337871A patent/GB1342266A/en not_active Expired
- 1971-07-23 NO NO02814/71A patent/NO126936B/no unknown
- 1971-07-23 DK DK365271AA patent/DK127616B/da unknown
- 1971-07-23 CH CH1085671A patent/CH539902A/de not_active IP Right Cessation
- 1971-07-23 FR FR7127021A patent/FR2104804B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI53521C (fi) | 1978-05-10 |
| FR2104804B1 (fr) | 1975-07-11 |
| DE2134563A1 (de) | 1972-01-27 |
| NO126936B (fr) | 1973-04-09 |
| CH539902A (de) | 1973-07-31 |
| SE335080B (fr) | 1971-05-10 |
| FR2104804A1 (fr) | 1972-04-21 |
| GB1342266A (en) | 1974-01-03 |
| DK127616B (da) | 1973-12-03 |