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
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 208000032953 Device battery issue Diseases 0.000 claims 1
- 229910001260 Pt alloy Inorganic materials 0.000 claims 1
- 230000001568 sexual effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
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
- G08B17/117—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
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。
FIG. 1 is a block diagram of a combustible gas detector according to the present invention, and FIG. 2 is a circuit diagram of the detector. A...Main power supply, PM...Bridge circuit, R...
Detection element, G...signal transmitter.
Claims (1)
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。[Claims for Utility Model Registration] (1) A power supply unit A, a resistance bridge circuit PM whose one side is composed of a gas detection element R, and a signal oscillator G that generates a low frequency signal by inputting the unbalanced voltage of the bridge circuit. and an electric/acoustic exchanger TA) that converts the low frequency signal generated by the signal oscillator G into an acoustic signal, and the gas detection element R has a size proportional to the gas concentration (%) around the element. A combustible gas detector characterized in that it determines the degree of unbalance of said bridge circuit that produces a voltage signal of (2) The gas detection element R of the bridge circuit is composed of a coil of thin platinum alloy wire, and is made of a Davy wire coil.
The flammable gas detector according to claim 1, which is housed in a cage. (3) The bridge circuit PM has a variable resistor R3 that adjusts the equilibrium condition to change the operating threshold of the gas detection element R. Sexual gas detector. (4) The combustible gas detector according to claim 1, which is a registered utility model, characterized in that it includes outside air suction/introduction means AS for guiding surrounding air to the gas detection element R. (5) The power supply unit A includes a battery buffer connected to an automatic charging circuit, a signal device that warns of a drop in main power voltage and battery failure, and a timer that operates a flammable gas detector intermittently. The combustible gas detector according to claim 1, which is characterized in that it is further equipped with an auxiliary power supply section A' including a circuit TP.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT09399/81A IT1167878B (en) | 1981-05-05 | 1981-05-05 | FLAMMABLE GAS DETECTOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374352U true JPH0374352U (en) | 1991-07-25 |
| JPH0424439Y2 JPH0424439Y2 (en) | 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 (en) | 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 (en) |
| JP (2) | JPS57186160A (en) |
| AR (1) | AR228973A1 (en) |
| AT (1) | ATE15562T1 (en) |
| AU (2) | AU8322682A (en) |
| BR (1) | BR8202411A (en) |
| CA (1) | CA1237505A (en) |
| DE (1) | DE3266133D1 (en) |
| DK (1) | DK159167C (en) |
| ES (1) | ES8304343A1 (en) |
| FI (1) | FI75430C (en) |
| GR (1) | GR75842B (en) |
| IE (1) | IE52445B1 (en) |
| IL (1) | IL65497A0 (en) |
| IT (1) | IT1167878B (en) |
| MX (1) | MX151271A (en) |
| NO (1) | NO153236C (en) |
| NZ (1) | NZ200307A (en) |
| PT (1) | PT74843B (en) |
| YU (1) | YU44342B (en) |
| ZA (1) | ZA823039B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1198606B (en) * | 1983-05-17 | 1988-12-21 | Controfugas Srl | FLAMMABLE GAS DETECTOR APPARATUS WITH PRECONDITIONED INTERVENTION |
| JPS6071999U (en) * | 1983-10-21 | 1985-05-21 | 矢崎総業株式会社 | gas alarm |
| NO317999B3 (en) * | 2002-06-28 | 2010-07-05 | Sts Gruppen As | Device for securing the operation of a habitat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216987U (en) * | 1975-07-24 | 1977-02-05 | ||
| JPS5268286U (en) * | 1975-11-17 | 1977-05-20 | ||
| JPS5433185U (en) * | 1977-08-09 | 1979-03-05 |
Family Cites Families (7)
| 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 (en) * | 1971-11-01 | 1973-02-26 | T J Connelly Construction Cy I | SMOKE SENSITIVE CIRCUIT, WITH BACKUP BATTERY |
| IT951304B (en) * | 1972-04-11 | 1973-06-30 | Rimoldi V E C Spa | OCN SEWING MACHINE UPPER ROTEL WORK CONVEYOR THE ADJUSTABLE INDEPENDENTLY FROM THE LOWER JAW CONVEYOR |
| 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 |
| JPS51106674A (en) * | 1975-03-16 | 1976-09-21 | Masanori Mochizuki | BENDEINGUROORUKI |
-
1981
- 1981-05-05 IT IT09399/81A patent/IT1167878B/en active
-
1982
- 1982-04-13 IL IL65497A patent/IL65497A0/en not_active IP Right Cessation
- 1982-04-15 NZ NZ200307A patent/NZ200307A/en unknown
- 1982-04-16 AR AR289119A patent/AR228973A1/en active
- 1982-04-26 DE DE8282830111T patent/DE3266133D1/en not_active Expired
- 1982-04-26 AT AT82830111T patent/ATE15562T1/en not_active IP Right Cessation
- 1982-04-26 DK DK185582A patent/DK159167C/en not_active IP Right Cessation
- 1982-04-26 EP EP82830111A patent/EP0065497B1/en not_active Expired
- 1982-04-27 BR BR8202411A patent/BR8202411A/en unknown
- 1982-04-28 JP JP57070574A patent/JPS57186160A/en active Pending
- 1982-04-28 ES ES511787A patent/ES8304343A1/en not_active Expired
- 1982-04-29 IE IE1010/82A patent/IE52445B1/en not_active IP Right Cessation
- 1982-05-03 MX MX192553A patent/MX151271A/en unknown
- 1982-05-03 NO NO821461A patent/NO153236C/en unknown
- 1982-05-03 AU AU83226/82A patent/AU8322682A/en not_active Abandoned
- 1982-05-04 CA CA000402237A patent/CA1237505A/en not_active Expired
- 1982-05-04 YU YU945/82A patent/YU44342B/en unknown
- 1982-05-04 PT PT74843A patent/PT74843B/en not_active IP Right Cessation
- 1982-05-04 ZA ZA823039A patent/ZA823039B/en unknown
- 1982-05-04 GR GR68058A patent/GR75842B/el unknown
- 1982-05-05 FI FI821569A patent/FI75430C/en not_active IP Right Cessation
-
1988
- 1988-06-27 AU AU18433/88A patent/AU1843388A/en not_active Abandoned
-
1990
- 1990-10-19 JP JP1990109076U patent/JPH0424439Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216987U (en) * | 1975-07-24 | 1977-02-05 | ||
| JPS5268286U (en) * | 1975-11-17 | 1977-05-20 | ||
| JPS5433185U (en) * | 1977-08-09 | 1979-03-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| ES511787A0 (en) | 1983-02-16 |
| DK185582A (en) | 1982-11-06 |
| ZA823039B (en) | 1983-03-30 |
| EP0065497B1 (en) | 1985-09-11 |
| JPH0424439Y2 (en) | 1992-06-09 |
| NO153236C (en) | 1986-02-05 |
| DK159167C (en) | 1991-02-11 |
| DK159167B (en) | 1990-09-10 |
| FI75430B (en) | 1988-02-29 |
| PT74843A (en) | 1982-06-01 |
| MX151271A (en) | 1984-10-29 |
| IL65497A0 (en) | 1982-07-30 |
| AU1843388A (en) | 1988-09-22 |
| CA1237505A (en) | 1988-05-31 |
| IT1167878B (en) | 1987-05-20 |
| PT74843B (en) | 1983-12-02 |
| NZ200307A (en) | 1985-05-31 |
| YU94582A (en) | 1985-03-20 |
| AU8322682A (en) | 1982-11-11 |
| FI75430C (en) | 1988-06-09 |
| IT8109399A0 (en) | 1981-05-05 |
| IE52445B1 (en) | 1987-10-28 |
| BR8202411A (en) | 1983-04-12 |
| ES8304343A1 (en) | 1983-02-16 |
| FI821569L (en) | 1982-11-06 |
| IE821010L (en) | 1982-11-05 |
| FI821569A0 (en) | 1982-05-05 |
| GR75842B (en) | 1984-08-02 |
| ATE15562T1 (en) | 1985-09-15 |
| AR228973A1 (en) | 1983-05-13 |
| EP0065497A1 (en) | 1982-11-24 |
| JPS57186160A (en) | 1982-11-16 |
| NO821461L (en) | 1982-11-08 |
| YU44342B (en) | 1990-06-30 |
| NO153236B (en) | 1985-10-28 |
| DE3266133D1 (en) | 1985-10-17 |
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