GB1528721A - Fire sensing arrangement - Google Patents

Fire sensing arrangement

Info

Publication number
GB1528721A
GB1528721A GB3997/77A GB399777A GB1528721A GB 1528721 A GB1528721 A GB 1528721A GB 3997/77 A GB3997/77 A GB 3997/77A GB 399777 A GB399777 A GB 399777A GB 1528721 A GB1528721 A GB 1528721A
Authority
GB
United Kingdom
Prior art keywords
chamber
chambers
air
bipolar
frequency
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
GB3997/77A
Other languages
English (en)
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
Priority claimed from CH147076A external-priority patent/CH604298A5/de
Priority claimed from CH146976A external-priority patent/CH597659A5/xx
Priority claimed from CH1303776A external-priority patent/CH607180A5/de
Application filed by Cerberus AG filed Critical Cerberus AG
Publication of GB1528721A publication Critical patent/GB1528721A/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-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire Alarms (AREA)
GB3997/77A 1976-02-06 1977-02-01 Fire sensing arrangement Expired GB1528721A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH147076A CH604298A5 (en) 1976-02-06 1976-02-06 Fire detector using ionisation chambers
CH146976A CH597659A5 (da) 1976-02-06 1976-02-06
CH1303776A CH607180A5 (en) 1976-10-14 1976-10-14 Fire detector using ionisation chambers

Publications (1)

Publication Number Publication Date
GB1528721A true GB1528721A (en) 1978-10-18

Family

ID=27172998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3997/77A Expired GB1528721A (en) 1976-02-06 1977-02-01 Fire sensing arrangement

Country Status (18)

Country Link
JP (1) JPS5295999A (da)
AT (1) AT363827B (da)
AU (1) AU503702B2 (da)
CA (1) CA1064625A (da)
DD (1) DD128136A5 (da)
DE (1) DE2700906C2 (da)
DK (1) DK142687B (da)
ES (1) ES455054A1 (da)
FI (1) FI770273A (da)
FR (1) FR2340587A1 (da)
GB (1) GB1528721A (da)
IL (1) IL51319A0 (da)
IT (1) IT1077270B (da)
NL (1) NL7701014A (da)
NO (1) NO140869C (da)
NZ (1) NZ183214A (da)
SE (1) SE427780B (da)
YU (1) YU27277A (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU48167A1 (da) * 1965-03-11 1966-09-12 Applic Electroniques Ets
CH556072A (de) * 1973-11-26 1974-11-15 Cerberus Ag Ionisationsfeuermelder.

Also Published As

Publication number Publication date
JPS5295999A (en) 1977-08-12
CA1064625A (en) 1979-10-16
NZ183214A (en) 1980-12-19
IL51319A0 (en) 1977-03-31
DK142687C (da) 1981-08-03
DK48377A (da) 1977-08-07
FR2340587B1 (da) 1983-02-25
NL7701014A (nl) 1977-08-09
DD128136A5 (de) 1977-11-02
FI770273A (da) 1977-08-07
AT363827B (de) 1981-09-10
DK142687B (da) 1980-12-15
DE2700906A1 (de) 1977-08-11
NO140869C (no) 1979-11-28
IT1077270B (it) 1985-05-04
AU503702B2 (en) 1979-09-13
DE2700906C2 (de) 1982-06-03
FR2340587A1 (fr) 1977-09-02
YU27277A (en) 1982-06-30
ES455054A1 (es) 1978-02-16
AU2185677A (en) 1978-08-10
SE7701246L (sv) 1977-08-07
NO770369L (no) 1977-08-09
NO140869B (no) 1979-08-20
SE427780B (sv) 1983-05-02
ATA989276A (de) 1981-01-15

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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