BE808064A - GAS INDICATOR - Google Patents
GAS INDICATORInfo
- Publication number
- BE808064A BE808064A BE138387A BE138387A BE808064A BE 808064 A BE808064 A BE 808064A BE 138387 A BE138387 A BE 138387A BE 138387 A BE138387 A BE 138387A BE 808064 A BE808064 A BE 808064A
- Authority
- BE
- Belgium
- Prior art keywords
- gas indicator
- indicator
- gas
- Prior art date
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Fire-Detection Mechanisms (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7313897A NL7313897A (en) | 1973-10-10 | 1973-10-10 | GAS INDICATOR. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE808064A true BE808064A (en) | 1974-03-15 |
Family
ID=19819783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE138387A BE808064A (en) | 1973-10-10 | 1973-11-30 | GAS INDICATOR |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3895367A (en) |
| JP (1) | JPS5067197A (en) |
| BE (1) | BE808064A (en) |
| DE (1) | DE2402493A1 (en) |
| FR (1) | FR2247773B1 (en) |
| NL (1) | NL7313897A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH598601A5 (en) * | 1975-07-10 | 1978-05-12 | Richard Hunziker | |
| US4007456A (en) * | 1975-12-01 | 1977-02-08 | Craftor Inc. | Gas detecting and warning system |
| US4065759A (en) * | 1976-01-07 | 1977-12-27 | Handing Theodore E | Smoke detector |
| DE2709487A1 (en) * | 1976-03-17 | 1977-09-22 | Nohmi Bosai Kogyo Co Ltd | FIRE ALARM |
| US4088986A (en) * | 1976-10-01 | 1978-05-09 | Boucher Charles E | Smoke, fire and gas alarm with remote sensing, back-up emergency power, and system self monitoring |
| US4096473A (en) * | 1976-12-09 | 1978-06-20 | P.R. Mallory & Co. Inc. | High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| GB1557921A (en) * | 1977-01-10 | 1979-12-19 | British Steel Corp | Gas monitors |
| USRE30620E (en) * | 1978-07-03 | 1981-05-19 | P. R. Mallory & Co. Inc. | High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| FR2431124A1 (en) * | 1978-07-11 | 1980-02-08 | Silvy Bruno | Breathalyser determining alcohol in motorists body - has stabilised electrical power supply and gas detecting resistor |
| US4225860A (en) * | 1979-01-15 | 1980-09-30 | Pittway Corporation | Sensitivity controlled dual input fire detector |
| JPS55166163A (en) * | 1979-06-13 | 1980-12-25 | Citizen Watch Co Ltd | Controller for anesthetic gas |
| US4335379A (en) * | 1979-09-13 | 1982-06-15 | Martin John R | Method and system for providing an audible alarm responsive to sensed conditions |
| IT212760Z2 (en) * | 1985-02-13 | 1989-09-20 | Salutati Giovanni Pistolozzi M | 'PROTECTOR-GAS' PROTECTION SYSTEM AGAINST GAS LEAKS |
| DE102014019773B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone |
| DE102014019172B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system |
| CN110164066A (en) * | 2017-12-29 | 2019-08-23 | 郑州天舜电子技术有限公司 | A kind of Security alert indicator light |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3733595A (en) * | 1971-02-12 | 1973-05-15 | E Benedict | Condition responsive switching circuit |
| JPS5320668Y2 (en) * | 1972-06-07 | 1978-05-31 |
-
1973
- 1973-10-10 NL NL7313897A patent/NL7313897A/en unknown
- 1973-11-30 BE BE138387A patent/BE808064A/en unknown
-
1974
- 1974-01-19 DE DE2402493A patent/DE2402493A1/en active Pending
- 1974-01-28 US US437351A patent/US3895367A/en not_active Expired - Lifetime
- 1974-01-31 JP JP49012299A patent/JPS5067197A/ja active Pending
- 1974-01-31 FR FR7403229A patent/FR2247773B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5067197A (en) | 1975-06-05 |
| FR2247773A1 (en) | 1975-05-09 |
| FR2247773B1 (en) | 1977-09-16 |
| DE2402493A1 (en) | 1975-04-30 |
| NL7313897A (en) | 1975-04-14 |
| US3895367A (en) | 1975-07-15 |
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