GB1291755A - Ionization fire alarm with insulation monitoring - Google Patents

Ionization fire alarm with insulation monitoring

Info

Publication number
GB1291755A
GB1291755A GB30653/70A GB3065370A GB1291755A GB 1291755 A GB1291755 A GB 1291755A GB 30653/70 A GB30653/70 A GB 30653/70A GB 3065370 A GB3065370 A GB 3065370A GB 1291755 A GB1291755 A GB 1291755A
Authority
GB
United Kingdom
Prior art keywords
chamber
signal
transistor
junction
alarm
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
GB30653/70A
Other languages
English (en)
Inventor
Andreas Scheidweiler
Otto Meier
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.)
Cerberus AG
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 GB1291755A publication Critical patent/GB1291755A/en
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
    • G08B17/10—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)
GB30653/70A 1969-06-24 1970-06-24 Ionization fire alarm with insulation monitoring Expired GB1291755A (en)

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
GB1291755A true GB1291755A (en) 1972-10-04

Family

ID=4354339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30653/70A Expired GB1291755A (en) 1969-06-24 1970-06-24 Ionization fire alarm with insulation monitoring

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114446002A (zh) * 2022-01-17 2022-05-06 厦门理工学院 火灾在线监测方法、装置、介质及系统

Families Citing this family (18)

* 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

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114446002A (zh) * 2022-01-17 2022-05-06 厦门理工学院 火灾在线监测方法、装置、介质及系统
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

Also Published As

Publication number Publication date
DE2029794B2 (de) 1973-04-26
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
NO125704B (enrdf_load_stackoverflow) 1972-10-16
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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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee