GB2233818B - Ion type smoke sensor - Google Patents

Ion type smoke sensor

Info

Publication number
GB2233818B
GB2233818B GB9011326A GB9011326A GB2233818B GB 2233818 B GB2233818 B GB 2233818B GB 9011326 A GB9011326 A GB 9011326A GB 9011326 A GB9011326 A GB 9011326A GB 2233818 B GB2233818 B GB 2233818B
Authority
GB
United Kingdom
Prior art keywords
smoke sensor
ion type
type smoke
ion
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
GB9011326A
Other versions
GB2233818A (en
GB9011326D0 (en
Inventor
Satoru Koizumi
Tetsuya Nagashima
Yoshihito Hirai
Yoshinori Kaminaka
Eiji Matsushita
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Publication of GB9011326D0 publication Critical patent/GB9011326D0/en
Publication of GB2233818A publication Critical patent/GB2233818A/en
Application granted granted Critical
Publication of GB2233818B publication Critical patent/GB2233818B/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
    • G08B17/11—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)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB9011326A 1989-05-22 1990-05-21 Ion type smoke sensor Expired - Lifetime GB2233818B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1128585A JPH02307198A (en) 1989-05-22 1989-05-22 Ionization type smoke sensor

Publications (3)

Publication Number Publication Date
GB9011326D0 GB9011326D0 (en) 1990-07-11
GB2233818A GB2233818A (en) 1991-01-16
GB2233818B true GB2233818B (en) 1993-09-22

Family

ID=14988393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9011326A Expired - Lifetime GB2233818B (en) 1989-05-22 1990-05-21 Ion type smoke sensor

Country Status (9)

Country Link
JP (1) JPH02307198A (en)
AT (1) AT397878B (en)
AU (1) AU616844B2 (en)
CH (1) CH683465A5 (en)
DE (1) DE4016231C2 (en)
FI (1) FI902472A0 (en)
FR (1) FR2647217B1 (en)
GB (1) GB2233818B (en)
NO (1) NO300945B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014782A (en) * 1978-01-05 1979-08-30 Sound Diffusion Ltd Improvements in or relating to ionization smoke detectors
GB2212656A (en) * 1987-12-26 1989-07-26 Hochiki Co Ionization smoke detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1568048A (en) * 1968-01-19 1969-05-23
CH563044A5 (en) * 1972-12-01 1975-06-13 Universal Det S A R L
JPS5175692A (en) * 1974-12-27 1976-06-30 Mitsubishi Metal Corp OSHOKUCHAKUSHOKUYOGANRYO OYOBISONOSEIZOHO
CA1115860A (en) * 1977-11-18 1982-01-05 Dennis W.S. Smout Smoke detectors
JPS5831275Y2 (en) * 1978-08-26 1983-07-11 ホーチキ株式会社 ionization smoke detector
JPH01102991U (en) * 1987-12-26 1989-07-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014782A (en) * 1978-01-05 1979-08-30 Sound Diffusion Ltd Improvements in or relating to ionization smoke detectors
GB2212656A (en) * 1987-12-26 1989-07-26 Hochiki Co Ionization smoke detector

Also Published As

Publication number Publication date
AU5511490A (en) 1990-11-22
ATA112290A (en) 1993-11-15
AU616844B2 (en) 1991-11-07
DE4016231C2 (en) 1998-12-10
DE4016231A1 (en) 1990-11-29
FR2647217A1 (en) 1990-11-23
JPH02307198A (en) 1990-12-20
FR2647217B1 (en) 1995-02-17
NO902239L (en) 1990-11-23
FI902472A0 (en) 1990-05-18
GB2233818A (en) 1991-01-16
NO902239D0 (en) 1990-05-21
GB9011326D0 (en) 1990-07-11
CH683465A5 (en) 1994-03-15
NO300945B1 (en) 1997-08-18
AT397878B (en) 1994-07-25

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