ZA741754B - Indicating presence of a fire - Google Patents

Indicating presence of a fire

Info

Publication number
ZA741754B
ZA741754B ZA00741754A ZA741754A ZA741754B ZA 741754 B ZA741754 B ZA 741754B ZA 00741754 A ZA00741754 A ZA 00741754A ZA 741754 A ZA741754 A ZA 741754A ZA 741754 B ZA741754 B ZA 741754B
Authority
ZA
South Africa
Prior art keywords
fire
indicating presence
indicating
Prior art date
Application number
ZA00741754A
Other languages
English (en)
Inventor
A Scheidweiler
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 ZA741754B publication Critical patent/ZA741754B/xx

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Alarm Systems (AREA)
ZA00741754A 1973-03-30 1974-03-18 Indicating presence of a fire ZA741754B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH462173A CH570016A5 (fr) 1973-03-30 1973-03-30

Publications (1)

Publication Number Publication Date
ZA741754B true ZA741754B (en) 1975-01-29

Family

ID=4279532

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00741754A ZA741754B (en) 1973-03-30 1974-03-18 Indicating presence of a fire

Country Status (17)

Country Link
US (1) US3872449A (fr)
JP (1) JPS5619671B2 (fr)
AT (1) AT340807B (fr)
BE (1) BE812331A (fr)
CA (1) CA1063260A (fr)
CH (1) CH570016A5 (fr)
DE (1) DE2408374B2 (fr)
DK (1) DK137099B (fr)
ES (1) ES425125A1 (fr)
FI (1) FI55420C (fr)
FR (1) FR2223766B1 (fr)
GB (1) GB1430035A (fr)
IT (1) IT1014554B (fr)
NL (1) NL7403973A (fr)
NO (1) NO136383C (fr)
SE (1) SE389569B (fr)
ZA (1) ZA741754B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512635B2 (fr) * 1972-07-26 1980-04-03
CH576175A5 (fr) * 1974-12-19 1976-05-31 Cerberus Ag
JPS5737265Y2 (fr) * 1976-07-07 1982-08-17
US4131888A (en) * 1976-08-18 1978-12-26 American District Telegraph Company Dual projected-beam smoke detector
US4091363A (en) * 1977-01-03 1978-05-23 Pittway Corporation Self-contained fire detector with interconnection circuitry
FR2386874A1 (fr) * 1977-04-08 1978-11-03 Gamma Electronic Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique
US4222046A (en) * 1978-07-31 1980-09-09 Honeywell Inc. Abnormal condition responsive means with periodic high sensitivity
US4250500A (en) * 1979-10-22 1981-02-10 Rca Corporation Smoke detector
CA1148279A (fr) * 1979-12-14 1983-06-14 Andreas Scheidweiler Detecteur de fumee par ionisation a coefficient de fiabilite ameliore
DE3127324A1 (de) * 1981-07-10 1983-01-27 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zur erhoehung der ansprechempfindlichkeit und der stoersicherheit in einer gefahren-, insbesondere brandmeldeanlage
US4539488A (en) * 1981-11-30 1985-09-03 Zenith Electronics Corporation Pulse wave to parabola wave converter
JPS60126798A (ja) * 1983-12-13 1985-07-06 ニッタン株式会社 環境異常検出装置
US5019805A (en) * 1989-02-03 1991-05-28 Flash-Alert Inc. Smoke detector with strobed visual alarm and remote alarm coupling
US6188318B1 (en) 1999-06-29 2001-02-13 Pittway Corp. Dual-technology intrusion detector with pet immunity
CN102455288B (zh) * 2010-10-15 2014-10-15 西门子公司 通过在线信号电平监控对传感器装置的光电信号路径进行校准
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
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735007A (en) * 1956-02-14 Time-base generator
US2811711A (en) * 1951-05-19 1957-10-29 Electronics Corp America Fire method and apparatus
US3582676A (en) * 1968-09-24 1971-06-01 Bendix Corp Pulse length normalizing and short pulse eliminating circuit
US3531692A (en) * 1969-03-03 1970-09-29 Combustion Eng Activity detector having increased accuracy of response
JPS482587U (fr) * 1971-05-25 1973-01-12

Also Published As

Publication number Publication date
DE2408374B2 (de) 1978-06-01
FI55420C (fi) 1979-07-10
BE812331A (fr) 1974-07-01
GB1430035A (en) 1976-03-31
DK137099B (da) 1978-01-16
NO741081L (no) 1974-10-01
ES425125A1 (es) 1976-06-16
DE2408374A1 (de) 1974-10-17
CA1063260A (fr) 1979-09-25
NO136383C (no) 1977-08-31
CH570016A5 (fr) 1975-11-28
ATA144074A (de) 1977-04-15
AU6689674A (en) 1975-09-25
AT340807B (de) 1978-01-10
US3872449A (en) 1975-03-18
FR2223766B1 (fr) 1978-12-01
JPS49131099A (fr) 1974-12-16
SE389569B (sv) 1976-11-08
FR2223766A1 (fr) 1974-10-25
NO136383B (fr) 1977-05-16
NL7403973A (fr) 1974-10-02
DK137099C (fr) 1978-06-12
IT1014554B (it) 1977-04-30
FI55420B (fi) 1979-03-30
JPS5619671B2 (fr) 1981-05-08

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