NO174606C - Method and apparatus for measuring smoke concentration - Google Patents

Method and apparatus for measuring smoke concentration

Info

Publication number
NO174606C
NO174606C NO912325A NO912325A NO174606C NO 174606 C NO174606 C NO 174606C NO 912325 A NO912325 A NO 912325A NO 912325 A NO912325 A NO 912325A NO 174606 C NO174606 C NO 174606C
Authority
NO
Norway
Prior art keywords
smoke concentration
measuring smoke
measuring
concentration
smoke
Prior art date
Application number
NO912325A
Other languages
Norwegian (no)
Other versions
NO174606B (en
NO912325L (en
NO912325D0 (en
Inventor
Bjoern Rennemo
Original Assignee
Bjoern Rennemo
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 Bjoern Rennemo filed Critical Bjoern Rennemo
Priority to NO912325A priority Critical patent/NO174606C/en
Publication of NO912325D0 publication Critical patent/NO912325D0/en
Priority to EP92911131A priority patent/EP0589922A1/en
Priority to PCT/NO1992/000101 priority patent/WO1992022812A1/en
Publication of NO912325L publication Critical patent/NO912325L/en
Publication of NO174606B publication Critical patent/NO174606B/en
Publication of NO174606C publication Critical patent/NO174606C/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
NO912325A 1991-06-17 1991-06-17 Method and apparatus for measuring smoke concentration NO174606C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO912325A NO174606C (en) 1991-06-17 1991-06-17 Method and apparatus for measuring smoke concentration
EP92911131A EP0589922A1 (en) 1991-06-17 1992-06-09 Method and device for measuring the smoke concentration in air
PCT/NO1992/000101 WO1992022812A1 (en) 1991-06-17 1992-06-09 Method and device for measuring the smoke concentration in air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO912325A NO174606C (en) 1991-06-17 1991-06-17 Method and apparatus for measuring smoke concentration

Publications (4)

Publication Number Publication Date
NO912325D0 NO912325D0 (en) 1991-06-17
NO912325L NO912325L (en) 1992-12-18
NO174606B NO174606B (en) 1994-02-21
NO174606C true NO174606C (en) 1994-06-01

Family

ID=19894220

Family Applications (1)

Application Number Title Priority Date Filing Date
NO912325A NO174606C (en) 1991-06-17 1991-06-17 Method and apparatus for measuring smoke concentration

Country Status (3)

Country Link
EP (1) EP0589922A1 (en)
NO (1) NO174606C (en)
WO (1) WO1992022812A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2153409A1 (en) * 1970-11-05 1972-05-25 Matsushita Electric Works Ltd Smoke detector
DE2236303A1 (en) * 1971-08-11 1973-02-15 Rft Messelektronik Dresden Veb IONIZATION SMOKE DETECTOR
US4104619A (en) * 1976-10-01 1978-08-01 General Electric Company Smoke detector

Also Published As

Publication number Publication date
WO1992022812A1 (en) 1992-12-23
NO174606B (en) 1994-02-21
NO912325L (en) 1992-12-18
NO912325D0 (en) 1991-06-17
EP0589922A1 (en) 1994-04-06

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Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN DECEMBER 2000