Movatterモバイル変換

[0]ホーム
URL:

ES415905A1 - Ionization-type fire sensor - Google Patents

Ionization-type fire sensor

Info

Publication number
ES415905A1
ES415905A1ES415905AES415905AES415905A1ES 415905 A1ES415905 A1ES 415905A1ES 415905 AES415905 AES 415905AES 415905 AES415905 AES 415905AES 415905 A1ES415905 A1ES 415905A1
Authority
ES
Spain
Prior art keywords
threshold
signal
ionization
threshold level
warning signal
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
ES415905A
Other languages
Spanish (es)
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 AGfiledCriticalCerberus AG
Publication of ES415905A1publicationCriticalpatent/ES415905A1/en
Expiredlegal-statusCriticalCurrent

Links

Classifications

Landscapes

Abstract

An ionization chamber includes an ionizing element which, in combination with an electrical circuit, is so arranged that the electrical resistance of the chamber increases when smoke, or fire aerosols are detected the sensor further includes an electrical circuit which has a first threshold detector responsive to a first threshold value of increase of resistance to permit generation of a warning signal, and a second threshold level with a second threshold detector, which responds upon exceeding of the second threshold level to provide an alarm signal different from the first warning signal arising at the first threshold level. Preferably, the warning signal is a constantly arising current, and the alarm signal is a signal of varying intensity.
ES415905A1972-07-171973-06-14Ionization-type fire sensorExpiredES415905A1 (en)

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
CH10655721972-07-17

Publications (1)

Publication NumberPublication Date
ES415905A1true ES415905A1 (en)1976-02-01

Family

ID=4365446

Family Applications (1)

Application NumberTitlePriority DateFiling Date
ES415905AExpiredES415905A1 (en)1972-07-171973-06-14Ionization-type fire sensor

Country Status (19)

CountryLink
US (1)US3909813A (en)
JP (1)JPS4970691A (en)
AT (1)AT339777B (en)
AU (1)AU474603B2 (en)
BE (1)BE801719A (en)
BR (1)BR7305317D0 (en)
CA (1)CA1018680A (en)
CH (1)CH547532A (en)
DE (1)DE2328872C3 (en)
DK (1)DK138714B (en)
ES (1)ES415905A1 (en)
FI (1)FI59498C (en)
FR (1)FR2193224B1 (en)
GB (1)GB1412164A (en)
HK (1)HK57380A (en)
IT (1)IT988800B (en)
NO (1)NO136269C (en)
SE (1)SE392357B (en)
ZA (1)ZA734853B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5617815Y2 (en)*1974-07-101981-04-24
JPS5150786A (en)*1974-10-291976-05-04Mitsubishi Electric Corp IONKASHIKIKE MURITANCHIKI
JPS52142999A (en)*1976-05-241977-11-29Nohmi Bosai Kogyo Co LtdFire alarm facility
DE2707409C2 (en)*1977-02-211985-02-21Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Ionization fire detector
US4207558A (en)*1978-04-031980-06-10Pittway CorporationInterconnection circuit for a plurality of alarm units
USRE30620E (en)*1978-07-031981-05-19P. R. Mallory & Co. Inc.High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
CH629905A5 (en)*1978-07-171982-05-14Cerberus Ag GAS AND / OR FIRE DETECTING SYSTEM.
JPS5555752U (en)*1978-10-121980-04-15
US4223303A (en)*1978-12-111980-09-16General Electric CompanyAlarm devices for interconnected multi-device systems
US4401978A (en)*1979-02-211983-08-30The Gamewell CorporationCombination detector
EP0039761A3 (en)*1980-05-091981-11-25Cerberus AgFire annunciating arrangement and method
JPH079680B2 (en)*1985-04-011995-02-01ホーチキ株式会社 Analog fire alarm
CH669859A5 (en)*1986-06-031989-04-14Cerberus Ag
EP0338218B1 (en)*1988-03-301993-09-15Cerberus AgEarly fire detection method
JPH0259461U (en)*1988-10-211990-05-01
RU2182366C2 (en)*2000-03-292002-05-10Институт физико-технических проблемIonization fire alarm
US6753786B1 (en)2000-08-112004-06-22Walter Kidde Portable Equipment, Inc.Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature
US7068177B2 (en)*2002-09-192006-06-27Honeywell International, Inc.Multi-sensor device and methods for fire detection
US20080030352A1 (en)*2006-02-272008-02-07Thorn Security LimitedMethods and systems for gas detection
EP3651136B1 (en)2013-10-072022-12-07Google LLCSmart-home hazard detector providing non-alarm status signals at opportune moments
US9685061B2 (en)2015-05-202017-06-20Google Inc.Event prioritization and user interfacing for hazard detection in multi-room smart-home environment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US3665441A (en)*1970-09-141972-05-23Gen Signal CorpMethod and apparatus for detecting aerosols

Also Published As

Publication numberPublication date
ATA456073A (en)1977-02-15
SE392357B (en)1977-03-21
JPS4970691A (en)1974-07-09
NO136269B (en)1977-05-02
NO136269C (en)1977-08-17
GB1412164A (en)1975-10-29
DE2328872A1 (en)1974-01-31
IT988800B (en)1975-04-30
AU474603B2 (en)1976-07-29
BR7305317D0 (en)1974-08-22
DK138714C (en)1979-03-19
CH547532A (en)1974-03-29
AT339777B (en)1977-11-10
ZA734853B (en)1974-06-26
AU5798673A (en)1975-01-16
HK57380A (en)1980-10-16
FR2193224A1 (en)1974-02-15
DK138714B (en)1978-10-16
BE801719A (en)1973-10-15
FI59498C (en)1981-08-10
DE2328872B2 (en)1980-05-14
DE2328872C3 (en)1981-01-08
CA1018680A (en)1977-10-04
US3909813A (en)1975-09-30
FI59498B (en)1981-04-30
FR2193224B1 (en)1978-12-29

Similar Documents

PublicationPublication DateTitle
ES415905A1 (en)Ionization-type fire sensor
US4225860A (en)Sensitivity controlled dual input fire detector
GB1295498A (en)
GB1347306A (en)Fire detector
US3611335A (en)Multiple combustion sensing device with false alarm prevention
IE790168L (en)Alarm system
GB1291755A (en)Ionization fire alarm with insulation monitoring
GB1109587A (en)Improvements in or relating to ionization smoke detectors
US4041479A (en)Output circuit of an ionization smoke sensor
GB1087609A (en)Fire and smoke detector
GB1514501A (en)Ionization-type fire detector
IE45520L (en)Smoke detector
US4112310A (en)Smoke detector with photo-responsive means for increasing the sensitivity during darkness
US4238677A (en)Smoke detector by ionization associated to a velocimetric measurement electronic circuit
GB1502376A (en)Fire sensor devices
FR2087004A5 (en)Gas detector using semi-conductor with gasre
US3582646A (en)Ionization fire detection device
JPS598874B2 (en) Ionic smoke detector
GB1478952A (en)Fire alarm devices and in installations including such devices
GB1469267A (en)Fire sensing system including an ionization chamber
GB1365018A (en)Ionization type smoke detector
FR2274982A1 (en)Circuit for fire alarm - uses ionisation chamber and alarm signal is provided when detector signal exceeds threshold level
ES366902A1 (en)Improvements in fire surveillance facilities. (Machine-translation by Google Translate, not legally binding)
GB1528721A (en)Fire sensing arrangement
GB1512545A (en)Ionisation fire sensors
[8]ページ先頭
©2009-2025 Movatter.jp