NO125704B - - Google Patents

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Publication number
NO125704B
NO125704B NO2432/70A NO243270A NO125704B NO 125704 B NO125704 B NO 125704B NO 2432/70 A NO2432/70 A NO 2432/70A NO 243270 A NO243270 A NO 243270A NO 125704 B NO125704 B NO 125704B
Authority
NO
Norway
Prior art keywords
threshold value
fire detector
ionization
transistor
detector according
Prior art date
Application number
NO2432/70A
Other languages
English (en)
Norwegian (no)
Inventor
A Scheidweiler
O Meier
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Publication of NO125704B publication Critical patent/NO125704B/no

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)
NO2432/70A 1969-06-24 1970-06-23 NO125704B (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH966269A CH497755A (de) 1969-06-24 1969-06-24 Ionisationsfeuermelder

Publications (1)

Publication Number Publication Date
NO125704B true NO125704B (enrdf_load_stackoverflow) 1972-10-16

Family

ID=4354339

Family Applications (1)

Application Number Title Priority Date Filing Date
NO2432/70A NO125704B (enrdf_load_stackoverflow) 1969-06-24 1970-06-23

Country Status (12)

Country Link
US (1) US3676680A (enrdf_load_stackoverflow)
BE (1) BE752058A (enrdf_load_stackoverflow)
CH (1) CH497755A (enrdf_load_stackoverflow)
DE (1) DE2029794C3 (enrdf_load_stackoverflow)
FR (1) FR2060523A5 (enrdf_load_stackoverflow)
GB (1) GB1291755A (enrdf_load_stackoverflow)
HK (1) HK10478A (enrdf_load_stackoverflow)
NL (1) NL168976C (enrdf_load_stackoverflow)
NO (1) NO125704B (enrdf_load_stackoverflow)
SE (1) SE354139B (enrdf_load_stackoverflow)
YU (1) YU33338B (enrdf_load_stackoverflow)
ZA (1) ZA704145B (enrdf_load_stackoverflow)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO129270B (enrdf_load_stackoverflow) * 1970-05-16 1974-03-18 Preussag Ag Feuerschutz
CA933679A (en) * 1970-08-10 1973-09-11 Nittan Company Fire alarming system
US3964036A (en) * 1972-11-15 1976-06-15 Hochiki Corporation Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere
US3866195A (en) * 1973-05-07 1975-02-11 Fire Alert Company Combustion product detector and method of calibrating
US3906474A (en) * 1973-05-07 1975-09-16 Fire Alert Company Combustion products alarm
US4023152A (en) * 1973-10-01 1977-05-10 Matsushita Electric Works, Ltd. Ionization type smoke sensing device
US3944859A (en) * 1974-09-03 1976-03-16 Rca Corporation Bridge-balance detection circuit
USRE30117E (en) * 1975-07-25 1979-10-16 Cerberus Ag Ionization-type fire or smoke sensing system
US4038649A (en) * 1975-09-16 1977-07-26 Emhart Industries, Inc. Smoke detection alarm device
DE2713280C3 (de) * 1977-03-25 1986-10-23 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Funktionsüberprüfbare Feuermelderanlage
JPS583195Y2 (ja) * 1977-10-20 1983-01-20 ツエルベルス・アクチェン・ゲゼルシャフト イオン式火災感知器
DE3004753C2 (de) * 1980-02-08 1983-12-22 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Brandmeldeeinrichtung
NL180784C (nl) * 1983-10-14 1987-04-16 Nederlanden Staat Gasgevoelige sensor.
DE3904979A1 (de) * 1989-02-18 1990-08-23 Beyersdorf Hartwig Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE4028167A1 (de) * 1990-09-05 1992-03-12 Esser Sicherheitstechnik Ionisationsbrandmelder
US9437100B2 (en) * 2013-11-02 2016-09-06 Jeffrey D. Zwirn Supervising alarm notification devices
CN112946458B (zh) * 2021-02-22 2024-01-12 重庆四联测控技术有限公司 一种压力变送器的强制报警电流输出系统和方法
CN114446002B (zh) * 2022-01-17 2023-10-31 厦门理工学院 火灾在线监测方法、装置、介质及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646556A (en) * 1950-06-17 1953-07-21 C O Two Fire Equipment Co Supervised alarm system
JPS446089Y1 (enrdf_load_stackoverflow) * 1966-03-30 1969-03-05
US3514603A (en) * 1966-12-22 1970-05-26 Johnson Service Co Ionization chamber detection apparatus having a low voltage source means

Also Published As

Publication number Publication date
DE2029794B2 (de) 1973-04-26
GB1291755A (en) 1972-10-04
HK10478A (en) 1978-03-03
YU157570A (en) 1976-04-30
NL7008421A (enrdf_load_stackoverflow) 1970-12-29
DE2029794C3 (de) 1979-10-11
ZA704145B (en) 1971-03-31
US3676680A (en) 1972-07-11
SE354139B (enrdf_load_stackoverflow) 1973-02-26
DE2029794A1 (de) 1971-01-07
CH497755A (de) 1970-10-15
YU33338B (en) 1976-10-31
FR2060523A5 (enrdf_load_stackoverflow) 1971-06-18
BE752058A (nl) 1970-12-01
NL168976C (nl) 1982-05-17

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