DE2703233C2 - Brandmelder - Google Patents

Brandmelder

Info

Publication number
DE2703233C2
DE2703233C2 DE19772703233 DE2703233A DE2703233C2 DE 2703233 C2 DE2703233 C2 DE 2703233C2 DE 19772703233 DE19772703233 DE 19772703233 DE 2703233 A DE2703233 A DE 2703233A DE 2703233 C2 DE2703233 C2 DE 2703233C2
Authority
DE
Germany
Prior art keywords
voltage
sensor
fire
fire detector
voltage drop
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
DE19772703233
Other languages
German (de)
English (en)
Other versions
DE2703233A1 (de
Inventor
Hideo Koshigaya Saitama Ito
Ryosaku Tokyo Kobayashi
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
Publication of DE2703233A1 publication Critical patent/DE2703233A1/de
Application granted granted Critical
Publication of DE2703233C2 publication Critical patent/DE2703233C2/de
Expired 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
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • 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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire-Detection Mechanisms (AREA)
DE19772703233 1976-02-16 1977-01-27 Brandmelder Expired DE2703233C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1496376A JPS5299099A (en) 1976-02-16 1976-02-16 Fire detector

Publications (2)

Publication Number Publication Date
DE2703233A1 DE2703233A1 (de) 1977-08-18
DE2703233C2 true DE2703233C2 (de) 1984-04-19

Family

ID=11875621

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772703233 Expired DE2703233C2 (de) 1976-02-16 1977-01-27 Brandmelder

Country Status (3)

Country Link
JP (1) JPS5299099A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2703233C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1541200A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA786519B (en) * 1978-11-20 1980-02-27 Anglo Amer Corp South Africa Detector
DE102014019172B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem
DE102014019773B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1014675A (en) * 1973-03-19 1977-07-26 Frank W. Emerson Emergency alarm system

Also Published As

Publication number Publication date
GB1541200A (en) 1979-02-21
DE2703233A1 (de) 1977-08-18
JPS5734557B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-07-23
JPS5299099A (en) 1977-08-19

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: WOLFF, M., DIPL.-PHYS., PAT.-ANW., 7000 STUTTGART

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee