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DE3380327D1 - Functional test means of light scattering type smoke detector - Google Patents

Functional test means of light scattering type smoke detector

Info

Publication number
DE3380327D1
DE3380327D1 DE8383112561T DE3380327T DE3380327D1 DE 3380327 D1 DE3380327 D1 DE 3380327D1 DE 8383112561 T DE8383112561 T DE 8383112561T DE 3380327 T DE3380327 T DE 3380327T DE 3380327 D1 DE3380327 D1 DE 3380327D1
Authority
DE
Germany
Prior art keywords
light scattering
smoke detector
functional test
test means
scattering type
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
Application number
DE8383112561T
Other languages
German (de)
Inventor
Toshikazu C O Nohmi Bos Morita
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo Co Ltd
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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Application granted granted Critical
Publication of DE3380327D1 publication Critical patent/DE3380327D1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
DE8383112561T 1982-12-14 1983-12-14 Functional test means of light scattering type smoke detector Expired DE3380327D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21891882A JPS59108940A (en) 1982-12-14 1982-12-14 Function testing device for scattered light type smoke detector

Publications (1)

Publication Number Publication Date
DE3380327D1 true DE3380327D1 (en) 1989-09-07

Family

ID=16727355

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383112561T Expired DE3380327D1 (en) 1982-12-14 1983-12-14 Functional test means of light scattering type smoke detector

Country Status (3)

Country Link
EP (1) EP0113461B1 (en)
JP (1) JPS59108940A (en)
DE (1) DE3380327D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0248957A1 (en) * 1986-06-12 1987-12-16 Pittway Corporation Self-testing combustion products detector
JPS61247918A (en) * 1985-04-26 1986-11-05 Hochiki Corp Output correcting device for analog sensor
JPH023891A (en) * 1988-06-16 1990-01-09 Nohmi Bosai Ltd Method and device for contamination correction in fire alarm device
JP2549442B2 (en) * 1989-08-12 1996-10-30 松下電工株式会社 Photoelectric smoke detector
GB2273769B (en) * 1992-12-15 1996-08-28 Stephen Henry Ellwood Proportional light scattering sensor
JP3213211B2 (en) * 1995-07-20 2001-10-02 ホーチキ株式会社 Photoelectric smoke detector
DE19912911C2 (en) * 1999-03-22 2001-07-19 Schako Metallwarenfabrik Device for detecting smoke

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627064A (en) * 1950-07-15 1953-01-27 C O Two Fire Equipment Co Smoke detector testing means
GB949651A (en) * 1961-12-27 1964-02-19 Pyrene Co Ltd Improvements in or relating to photo-electric indicator circuits
DE1277710B (en) * 1965-07-26 1968-09-12 Honeywell Inc Self-checking device with a status sensor
JPS5526515B2 (en) * 1974-03-04 1980-07-14
US4053785A (en) * 1976-01-07 1977-10-11 General Signal Corporation Optical smoke detector with smoke effect simulating means
JPS5397481A (en) * 1977-02-05 1978-08-25 Kokusai Gijutsu Kaihatsu Kk Smoke detector
US4232307A (en) * 1978-12-18 1980-11-04 American District Telegraph Company Electrical test circuit for optical particle detector
JPS56100342A (en) * 1980-01-14 1981-08-12 Matsushita Electric Works Ltd Photoelectric type smoke sensor

Also Published As

Publication number Publication date
JPS59108940A (en) 1984-06-23
EP0113461A2 (en) 1984-07-18
JPS648783B2 (en) 1989-02-15
EP0113461B1 (en) 1989-08-02
EP0113461A3 (en) 1986-10-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee