NZ200307A - Inflammable gas detection alarm - Google Patents
Inflammable gas detection alarmInfo
- Publication number
- NZ200307A NZ200307A NZ200307A NZ20030782A NZ200307A NZ 200307 A NZ200307 A NZ 200307A NZ 200307 A NZ200307 A NZ 200307A NZ 20030782 A NZ20030782 A NZ 20030782A NZ 200307 A NZ200307 A NZ 200307A
- Authority
- NZ
- New Zealand
- Prior art keywords
- gas
- bridge circuit
- differential amplifier
- output
- inflammable
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title 1
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000000063 preceeding effect Effects 0.000 claims 2
- 239000012080 ambient air Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 16
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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)
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 (1)
| Publication Number | Publication Date |
|---|---|
| NZ200307A true NZ200307A (en) | 1985-05-31 |
Family
ID=11129547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ200307A NZ200307A (en) | 1981-05-05 | 1982-04-15 | Inflammable gas detection alarm |
Country Status (21)
Families Citing this family (3)
| 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 |
Family Cites Families (8)
| 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 |
| JPS5216987U (enrdf_load_stackoverflow) * | 1975-07-24 | 1977-02-05 | ||
| JPS5511496Y2 (enrdf_load_stackoverflow) * | 1975-11-17 | 1980-03-12 | ||
| JPS5433185U (enrdf_load_stackoverflow) * | 1977-08-09 | 1979-03-05 |
-
1981
- 1981-05-05 IT IT09399/81A patent/IT1167878B/it active
-
1982
- 1982-04-13 IL IL65497A patent/IL65497A0/xx not_active IP Right Cessation
- 1982-04-15 NZ NZ200307A patent/NZ200307A/en unknown
- 1982-04-16 AR AR289119A patent/AR228973A1/es active
- 1982-04-26 DE DE8282830111T patent/DE3266133D1/de not_active Expired
- 1982-04-26 EP EP82830111A patent/EP0065497B1/fr not_active Expired
- 1982-04-26 DK DK185582A patent/DK159167C/da not_active IP Right Cessation
- 1982-04-26 AT AT82830111T patent/ATE15562T1/de not_active IP Right Cessation
- 1982-04-27 BR BR8202411A patent/BR8202411A/pt unknown
- 1982-04-28 JP JP57070574A patent/JPS57186160A/ja active Pending
- 1982-04-28 ES ES511787A patent/ES511787A0/es active Granted
- 1982-04-29 IE IE1010/82A patent/IE52445B1/en not_active IP Right Cessation
- 1982-05-03 MX MX192553A patent/MX151271A/es unknown
- 1982-05-03 NO NO821461A patent/NO153236C/no unknown
- 1982-05-03 AU AU83226/82A patent/AU8322682A/en not_active Abandoned
- 1982-05-04 ZA ZA823039A patent/ZA823039B/xx unknown
- 1982-05-04 YU YU945/82A patent/YU44342B/xx unknown
- 1982-05-04 CA CA000402237A patent/CA1237505A/en not_active Expired
- 1982-05-04 GR GR68058A patent/GR75842B/el unknown
- 1982-05-04 PT PT74843A patent/PT74843B/pt not_active IP Right Cessation
- 1982-05-05 FI FI821569A patent/FI75430C/fi 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
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