GB2267963B - Obscuration sensor - Google Patents

Obscuration sensor

Info

Publication number
GB2267963B
GB2267963B GB9311311A GB9311311A GB2267963B GB 2267963 B GB2267963 B GB 2267963B GB 9311311 A GB9311311 A GB 9311311A GB 9311311 A GB9311311 A GB 9311311A GB 2267963 B GB2267963 B GB 2267963B
Authority
GB
United Kingdom
Prior art keywords
obscuration sensor
obscuration
sensor
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 - Lifetime
Application number
GB9311311A
Other versions
GB9311311D0 (en
GB2267963A (en
Inventor
David Appleby
Stephen Henry Ellwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB9311311D0 publication Critical patent/GB9311311D0/en
Priority to EP93310263A priority Critical patent/EP0629983A1/en
Publication of GB2267963A publication Critical patent/GB2267963A/en
Application granted granted Critical
Publication of GB2267963B publication Critical patent/GB2267963B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9311311A 1992-06-04 1993-06-02 Obscuration sensor Expired - Lifetime GB2267963B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93310263A EP0629983A1 (en) 1993-06-02 1993-12-17 Obscuration type smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929212060A GB9212060D0 (en) 1992-06-04 1992-06-04 Obscuration sensor

Publications (3)

Publication Number Publication Date
GB9311311D0 GB9311311D0 (en) 1993-07-21
GB2267963A GB2267963A (en) 1993-12-22
GB2267963B true GB2267963B (en) 1996-03-20

Family

ID=10716689

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929212060A Pending GB9212060D0 (en) 1992-06-04 1992-06-04 Obscuration sensor
GB9311311A Expired - Lifetime GB2267963B (en) 1992-06-04 1993-06-02 Obscuration sensor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929212060A Pending GB9212060D0 (en) 1992-06-04 1992-06-04 Obscuration sensor

Country Status (1)

Country Link
GB (2) GB9212060D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPN968996A0 (en) * 1996-05-06 1996-05-30 Vision Products Pty Ltd Filter integrity monitoring system
AUPN968896A0 (en) * 1996-05-06 1996-05-30 Vision Products Pty Ltd Optical scatter dectector controlling circuit and method
JPH11224387A (en) * 1998-02-05 1999-08-17 Hochiki Corp Extinction type smoke sensor
AUPQ553800A0 (en) * 2000-02-10 2000-03-02 Cole, Martin Terence Improvements relating to smoke detectors particularily duct monitored smoke detectors
GB2379977B (en) * 2001-09-25 2005-04-06 Kidde Plc High sensitivity particle detection
EP1349127A1 (en) * 2002-03-28 2003-10-01 Siemens Building Technologies AG Obscuration smoke detector and use thereof
KR101069042B1 (en) 2003-10-23 2011-09-29 테렌스 콜 마틴 A chamber configuration adapted for a particle detector having an inlet through which fluid is adapted to flow at a first velocity
AU2007327541B2 (en) * 2006-09-07 2012-08-02 Siemens Schweiz Ag Improvement(s) related to particle monitors and method(s) therefor
US11448536B2 (en) 2019-10-16 2022-09-20 Weatherford Technology Holdings, Llc Measuring component concentrations of nonhomogeneous immiscible mixtures in multiphase flows using near-infrared (NIR) filter photometry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901812A (en) * 1973-01-18 1975-08-26 Satt Elektronik Ab Visibility meter using multiple light beams
WO1981002633A1 (en) * 1980-03-06 1981-09-17 Baxter Travenol Lab Photometric apparatus and method
GB2110819A (en) * 1981-05-07 1983-06-22 Nat Res Dev Analysis apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901812A (en) * 1973-01-18 1975-08-26 Satt Elektronik Ab Visibility meter using multiple light beams
WO1981002633A1 (en) * 1980-03-06 1981-09-17 Baxter Travenol Lab Photometric apparatus and method
GB2110819A (en) * 1981-05-07 1983-06-22 Nat Res Dev Analysis apparatus

Also Published As

Publication number Publication date
GB9311311D0 (en) 1993-07-21
GB2267963A (en) 1993-12-22
GB9212060D0 (en) 1992-07-22

Similar Documents

Publication Publication Date Title
GB2267342B (en) Smoke sensor
GB2295010B (en) Sensor system
DE69401347D1 (en) Sensor
GB2266956B (en) Sensor Unit
DE59205629D1 (en) Sensor
GB2263644B (en) Event complex
GB2265468B (en) Alarm system
GB2267963B (en) Obscuration sensor
DE59303064D1 (en) Sensor
GB9308305D0 (en) Sensors
GB2263352B (en) Alarm sensor
GB9122704D0 (en) Sensors
EP0592888A3 (en) Reliable sensor
GB9222383D0 (en) Sensor
GB9209937D0 (en) Sensor
GB2270158B (en) Detection
GB9227177D0 (en) Alarms
GB9216465D0 (en) Detection
GB9212873D0 (en) Alarm
GB9224617D0 (en) Sensor devices
GB9208912D0 (en) Detection means
GB9214938D0 (en) Detectors
GB9322478D0 (en) Sensor system
GB9203423D0 (en) Position sensor
ZA938556B (en) Detection system

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20130601