ZA704145B - Ionization fire alarm with insulation monitoring - Google Patents

Ionization fire alarm with insulation monitoring

Info

Publication number
ZA704145B
ZA704145B ZA704145A ZA704145A ZA704145B ZA 704145 B ZA704145 B ZA 704145B ZA 704145 A ZA704145 A ZA 704145A ZA 704145 A ZA704145 A ZA 704145A ZA 704145 B ZA704145 B ZA 704145B
Authority
ZA
South Africa
Prior art keywords
fire alarm
insulation monitoring
ionization fire
ionization
insulation
Prior art date
Application number
ZA704145A
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 ZA704145B publication Critical patent/ZA704145B/en

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-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
ZA704145A 1969-06-24 1970-06-17 Ionization fire alarm with insulation monitoring ZA704145B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH966269A CH497755A (en) 1969-06-24 1969-06-24 Ionization fire alarms

Publications (1)

Publication Number Publication Date
ZA704145B true ZA704145B (en) 1971-03-31

Family

ID=4354339

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA704145A ZA704145B (en) 1969-06-24 1970-06-17 Ionization fire alarm with insulation monitoring

Country Status (12)

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

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO129270B (en) * 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 (en) * 1977-03-25 1986-10-23 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Function-testable fire alarm system
JPS583195Y2 (en) * 1977-10-20 1983-01-20 ツエルベルス・アクチェン・ゲゼルシャフト Ionic fire detector
DE3004753C2 (en) * 1980-02-08 1983-12-22 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Fire alarm device
NL180784C (en) * 1983-10-14 1987-04-16 Nederlanden Staat GAS SENSITIVE SENSOR.
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE3904979A1 (en) * 1989-02-18 1990-08-23 Beyersdorf Hartwig METHOD FOR OPERATING AN IONIZATION SMOKE DETECTOR AND IONIZATION SMOKE DETECTOR
DE4028167A1 (en) * 1990-09-05 1992-03-12 Esser Sicherheitstechnik Ionisation fire detector - has common electrode with FET device coupled by conductive material to electrode
US9437100B2 (en) * 2013-11-02 2016-09-06 Jeffrey D. Zwirn Supervising alarm notification devices
CN112946458B (en) * 2021-02-22 2024-01-12 重庆四联测控技术有限公司 Forced alarm current output system and method of pressure transmitter
CN114446002B (en) * 2022-01-17 2023-10-31 厦门理工学院 Fire on-line monitoring method, device, medium and system

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 (en) * 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
FR2060523A5 (en) 1971-06-18
DE2029794A1 (en) 1971-01-07
YU33338B (en) 1976-10-31
CH497755A (en) 1970-10-15
NO125704B (en) 1972-10-16
BE752058A (en) 1970-12-01
GB1291755A (en) 1972-10-04
DE2029794B2 (en) 1973-04-26
YU157570A (en) 1976-04-30
SE354139B (en) 1973-02-26
US3676680A (en) 1972-07-11
NL168976C (en) 1982-05-17
DE2029794C3 (en) 1979-10-11
HK10478A (en) 1978-03-03
NL7008421A (en) 1970-12-29

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