JPH0374352U - - Google Patents

Info

Publication number
JPH0374352U
JPH0374352U JP1990109076U JP10907690U JPH0374352U JP H0374352 U JPH0374352 U JP H0374352U JP 1990109076 U JP1990109076 U JP 1990109076U JP 10907690 U JP10907690 U JP 10907690U JP H0374352 U JPH0374352 U JP H0374352U
Authority
JP
Japan
Prior art keywords
detection element
bridge circuit
gas detector
signal
gas detection
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.)
Granted
Application number
JP1990109076U
Other languages
English (en)
Other versions
JPH0424439Y2 (ja
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 filed Critical
Publication of JPH0374352U publication Critical patent/JPH0374352U/ja
Application granted granted Critical
Publication of JPH0424439Y2 publication Critical patent/JPH0424439Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Emergency Alarm Devices (AREA)
  • Control Of Combustion (AREA)

Description

【図面の簡単な説明】
第１図は本考案による可燃性ガス検出器のブロ
ツク図、第２図は該検出器の回路図である。 Ａ……主電源、ＰＭ……ブリツジ回路、Ｒ……
検出要素、Ｇ……信号発信器。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 電源部Ａと、一辺がガス検出要素Ｒからな
    る抵抗ブリツジ回路ＰＭと、該ブリツジ回路の不
    平衡電圧を入力して低周波信号を発生する信号発
    振器Ｇと、該信号発振器Ｇが発生する低周波信号
    を音響信号に変換する電気・音響交換器ＴＡ）と
    を備え、前記ガス検出要素Ｒは、該要素の周囲の
    ガス濃度（％）に比例する大きさの電圧信号を生
    じる前記ブリツジ回路の不平衡度を決定すること
    を特長とする可燃性ガス検出器。 (2) 前記ブリツジ回路のガス検出要素Ｒは細い
    プラチナ合金線のコイルで構成され、デイビー・
    ケージに格納されていることを特徴とする実用新
    案登録請求の範囲第１項に記載の可燃性ガス検出
    器。 (3) 前記ブリツジ回路ＰＭは、平衡条件を調整
    して前記ガス検出要素Ｒの作動閾値を変更する可
    変抵抗Ｒ３を有することを特徴とする実用新案登
    録請求の範囲第１項に記載の可燃性ガス検出器。 (4) 周囲の空気を前記ガス検出要素Ｒに導くた
    めの外気吸引導入手段ＡＳを備えることを特徴と
    する実用新案登録請求の範囲第１項に記載の可燃
    性ガス検出器。 (5) 前記電源部Ａには、自動充電回路に接続さ
    れたバツテリー・バツフアーと、主電源電圧の低
    下とバツテリーの故障を警報する信号装置と、可
    燃性ガス検出器を間欠的に動作させるタイマー回
    路ＴＰとを含む補助電源部Ａ′を付設したことを
    特徴とする実用新案登録請求の範囲第１項に記載
    の可燃性ガス検出器。
JP1990109076U 1981-05-05 1990-10-19 Expired JPH0424439Y2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT09399/81A IT1167878B (it) 1981-05-05 1981-05-05 Apparecchio rivelatore di gas infiammabile

Publications (2)

Publication Number Publication Date
JPH0374352U true JPH0374352U (ja) 1991-07-25
JPH0424439Y2 JPH0424439Y2 (ja) 1992-06-09

Family

ID=11129547

Family Applications (2)

Application Number Title Priority Date Filing Date
JP57070574A Pending JPS57186160A (en) 1981-05-05 1982-04-28 Detector for inflammable gas
JP1990109076U Expired JPH0424439Y2 (ja) 1981-05-05 1990-10-19

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP57070574A Pending JPS57186160A (en) 1981-05-05 1982-04-28 Detector for inflammable gas

Country Status (21)

Country Link
EP (1) EP0065497B1 (ja)
JP (2) JPS57186160A (ja)
AR (1) AR228973A1 (ja)
AT (1) ATE15562T1 (ja)
AU (2) AU8322682A (ja)
BR (1) BR8202411A (ja)
CA (1) CA1237505A (ja)
DE (1) DE3266133D1 (ja)
DK (1) DK159167C (ja)
ES (1) ES511787A0 (ja)
FI (1) FI75430C (ja)
GR (1) GR75842B (ja)
IE (1) IE52445B1 (ja)
IL (1) IL65497A0 (ja)
IT (1) IT1167878B (ja)
MX (1) MX151271A (ja)
NO (1) NO153236C (ja)
NZ (1) NZ200307A (ja)
PT (1) PT74843B (ja)
YU (1) YU44342B (ja)
ZA (1) ZA823039B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1198606B (it) * 1983-05-17 1988-12-21 Controfugas Srl Apparecchio rivelatore di gas infiammabile ad intervento precondizionato
JPS6071999U (ja) * 1983-10-21 1985-05-21 矢崎総業株式会社 ガス警報器
NO317999B3 (no) * 2002-06-28 2010-07-05 Sts Gruppen As Anordning for sikring av driften av et habitat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216987U (ja) * 1975-07-24 1977-02-05
JPS5268286U (ja) * 1975-11-17 1977-05-20
JPS5433185U (ja) * 1977-08-09 1979-03-05

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221320A (en) * 1961-04-13 1965-11-30 Komyo Rikagaku Kogyo Kabushiki Gas alarm circuit
US3482233A (en) * 1967-04-13 1969-12-02 Eastern Co Gas detector system
BE788001A (fr) * 1971-11-01 1973-02-26 T J Connelly Construction Cy I Circuit sensible a la fumee, avec batterie de secours
US3950739A (en) * 1974-10-30 1976-04-13 Campman James P Detector for detecting and locating the source of a contaminating gas or smoke in the atmosphere
GB1474700A (en) * 1974-12-16 1977-05-25 Neotronics Ltd Device for detecting and indicating the presence in a fluid environment of a potentially dangerous constituent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216987U (ja) * 1975-07-24 1977-02-05
JPS5268286U (ja) * 1975-11-17 1977-05-20
JPS5433185U (ja) * 1977-08-09 1979-03-05

Also Published As

Publication number Publication date
ES8304343A1 (es) 1983-02-16
IL65497A0 (en) 1982-07-30
AU1843388A (en) 1988-09-22
IT8109399A0 (it) 1981-05-05
IE52445B1 (en) 1987-10-28
ES511787A0 (es) 1983-02-16
DK159167B (da) 1990-09-10
EP0065497B1 (fr) 1985-09-11
FI75430B (fi) 1988-02-29
PT74843A (en) 1982-06-01
EP0065497A1 (fr) 1982-11-24
JPH0424439Y2 (ja) 1992-06-09
PT74843B (en) 1983-12-02
FI75430C (fi) 1988-06-09
NZ200307A (en) 1985-05-31
YU94582A (en) 1985-03-20
YU44342B (en) 1990-06-30
ATE15562T1 (de) 1985-09-15
DK159167C (da) 1991-02-11
FI821569A0 (fi) 1982-05-05
GR75842B (ja) 1984-08-02
MX151271A (es) 1984-10-29
AR228973A1 (es) 1983-05-13
DE3266133D1 (en) 1985-10-17
JPS57186160A (en) 1982-11-16
AU8322682A (en) 1982-11-11
IT1167878B (it) 1987-05-20
NO821461L (no) 1982-11-08
ZA823039B (en) 1983-03-30
NO153236C (no) 1986-02-05
DK185582A (da) 1982-11-06
BR8202411A (pt) 1983-04-12
NO153236B (no) 1985-10-28
CA1237505A (en) 1988-05-31
FI821569L (fi) 1982-11-06
IE821010L (en) 1982-11-05

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