CH498457A - Rauchmelder mit zwei Ionisationskammern - Google Patents

Rauchmelder mit zwei Ionisationskammern

Info

Publication number
CH498457A
CH498457A CH489170A CH489170A CH498457A CH 498457 A CH498457 A CH 498457A CH 489170 A CH489170 A CH 489170A CH 489170 A CH489170 A CH 489170A CH 498457 A CH498457 A CH 498457A
Authority
CH
Switzerland
Prior art keywords
smoke detector
ionization chambers
ionization
chambers
smoke
Prior art date
Application number
CH489170A
Other languages
German (de)
English (en)
Inventor
Sasaki Koju
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of CH498457A publication Critical patent/CH498457A/de

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)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CH489170A 1969-04-04 1970-04-02 Rauchmelder mit zwei Ionisationskammern CH498457A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44025730A JPS5147039B1 (ja) 1969-04-04 1969-04-04

Publications (1)

Publication Number Publication Date
CH498457A true CH498457A (de) 1970-10-31

Family

ID=12173907

Family Applications (1)

Application Number Title Priority Date Filing Date
CH489170A CH498457A (de) 1969-04-04 1970-04-02 Rauchmelder mit zwei Ionisationskammern

Country Status (11)

Country Link
JP (1) JPS5147039B1 (ja)
AT (1) AT297544B (ja)
BE (1) BE732651A (ja)
CH (1) CH498457A (ja)
DE (1) DE2004584B2 (ja)
ES (1) ES375686A1 (ja)
FR (1) FR2042047A5 (ja)
GB (1) GB1269911A (ja)
IL (1) IL33654A (ja)
NL (1) NL144410B (ja)
SE (1) SE350634B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE3904979A1 (de) * 1989-02-18 1990-08-23 Beyersdorf Hartwig Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder
CN111951514A (zh) * 2020-08-03 2020-11-17 深圳职业技术学院 一种基于图像识别的烟雾检测装置

Also Published As

Publication number Publication date
BE732651A (ja) 1969-10-16
DE2004584A1 (de) 1970-11-26
SE350634B (ja) 1972-10-30
JPS5147039B1 (ja) 1976-12-13
AT297544B (de) 1972-03-27
NL7001934A (ja) 1970-10-06
NL144410B (nl) 1974-12-16
IL33654A0 (en) 1970-03-22
ES375686A1 (es) 1972-05-16
IL33654A (en) 1973-08-29
GB1269911A (en) 1972-04-06
FR2042047A5 (ja) 1971-02-05
DE2004584B2 (de) 1971-12-23

Similar Documents

Publication Publication Date Title
CA959179A (en) Smoke detector with at least one smoke measuring chamber
CH508251A (de) Ionisationsfeuermelder
NL164791C (nl) Brandbuis.
CH497755A (de) Ionisationsfeuermelder
CH486082A (de) Ionisationsfeuermelder
AT292899B (de) Doppelbrandfeuerung
DK125938B (da) Ioniseringsbrandmelder.
CH498457A (de) Rauchmelder mit zwei Ionisationskammern
AT301398B (de) Ionisations-Rauchmelder
IL34977A (en) Ionization smoke detector
CH489070A (de) Ionisationsfeuermelder
CH535959A (de) Ionisations-Dosimeter
CH526178A (de) Rauchmelder
CH512121A (de) Ionisations-Rauchmelder
CH518548A (de) Flammenionisationsdetektor
CH520990A (de) Rauchdetektor
FI55043B (fi) Foerfarande foer framstaellning av en reducerande gas
CH513479A (de) Rauchmelder
AT299743B (de) Rohrtürschließer
CH534403A (de) Rauchdetektor
CA928872A (en) Ionization smoke detector
DE2050719B2 (de) Feuermelderanlage
ZA705031B (en) Ionization smoke detector
AU419207B2 (en) Ionization smoke detector
ES148588Y (es) Detector termostatico-electrico.

Legal Events

Date Code Title Description
PL Patent ceased