GB9121111D0 - Light metering device - Google Patents
Light metering deviceInfo
- Publication number
- GB9121111D0 GB9121111D0 GB919121111A GB9121111A GB9121111D0 GB 9121111 D0 GB9121111 D0 GB 9121111D0 GB 919121111 A GB919121111 A GB 919121111A GB 9121111 A GB9121111 A GB 9121111A GB 9121111 D0 GB9121111 D0 GB 9121111D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- metering device
- light metering
- light
- metering
- 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.)
- Withdrawn
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
- G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
-
- 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
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9121111A GB2261502A (en) | 1991-10-04 | 1991-10-04 | Smoke detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9121111A GB2261502A (en) | 1991-10-04 | 1991-10-04 | Smoke detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9121111D0 true GB9121111D0 (en) | 1991-11-13 |
GB2261502A GB2261502A (en) | 1993-05-19 |
Family
ID=10702421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9121111A Withdrawn GB2261502A (en) | 1991-10-04 | 1991-10-04 | Smoke detection device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2261502A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343946A (en) * | 1996-05-03 | 2000-05-24 | Vision Products Pty Ltd | Reduced contamination smoke detector |
AUPN965996A0 (en) | 1996-05-03 | 1996-05-30 | Vision Products Pty Ltd | The detection of airborne pollutants |
FR2754347B1 (en) * | 1996-10-09 | 1998-11-27 | Seb Sa | SMOKE DETECTION DEVICE FOR COOKING APPARATUS |
GB2342987B (en) * | 1998-10-20 | 2003-03-19 | David Appleby | Improved smoke sensor with a fault monitoring capability |
GB2372099B (en) * | 2001-02-08 | 2003-11-05 | Status Scient Controls Ltd | Gas sensor |
KR102061714B1 (en) * | 2009-07-07 | 2020-02-11 | 엑스트랄리스 테크놀로지 리미티드 | Chamber condition |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792272A (en) * | 1973-01-12 | 1974-02-12 | Omicron Syst Corp | Breath test device for organic components, including alcohol |
US3924252A (en) * | 1973-03-15 | 1975-12-02 | Espey Mfg & Electronics Corp | Laser smoke detection |
US3885162A (en) * | 1973-10-31 | 1975-05-20 | Contraves Goerz Corp | Optical measuring apparatus |
US4355897A (en) * | 1977-12-27 | 1982-10-26 | Beckman Instruments, Inc. | Near-simultaneous measurements at forward and back scatter angles in light scattering photometers |
US4346296A (en) * | 1980-08-15 | 1982-08-24 | Andros Analyzers Incorporated | Non-dispersive infrared gas analyzer |
US4632563A (en) * | 1983-02-28 | 1986-12-30 | The Syconex Corporation | In-situ gas analyzer |
DE3309838C2 (en) * | 1983-03-18 | 1986-06-05 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Optical transmission meter |
-
1991
- 1991-10-04 GB GB9121111A patent/GB2261502A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2261502A (en) | 1993-05-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0557532A4 (en) | Optical device | |
EP0499979A3 (en) | Electro-optical device | |
EP0510883A3 (en) | Planar optical device | |
EP0500085A3 (en) | Electro-optical device | |
GB9009726D0 (en) | Optoelectronic device | |
GB2255193B (en) | Optical device | |
EP0529556A3 (en) | Vector-quatizing device | |
GB2256894B (en) | Fixing device | |
EP0499210A3 (en) | Light metering calculation apparatus | |
EP0496088A3 (en) | Workpiece-measuring device | |
GB9220967D0 (en) | Light applying device | |
GB9121111D0 (en) | Light metering device | |
EP0440927A3 (en) | Light quantity adjusting device | |
EP0500084A3 (en) | Electro-optical device | |
EP0438661A3 (en) | Metering device | |
EP0526663A4 (en) | Light projecting device | |
EP0527240A4 (en) | Light projecting device | |
GB2255166B (en) | Light device | |
EP0501136A3 (en) | Electro-optical device | |
EP0527420A3 (en) | Fixing device | |
GB2262148B (en) | Fixing device | |
GB2253498B (en) | Optical indicating device | |
GB9205979D0 (en) | Fixing device | |
GB8813955D0 (en) | Light metering device | |
GB9113099D0 (en) | Light meter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |