IE41452L - Fire detector - Google Patents
Fire detectorInfo
- Publication number
- IE41452L IE41452L IE751827A IE182775A IE41452L IE 41452 L IE41452 L IE 41452L IE 751827 A IE751827 A IE 751827A IE 182775 A IE182775 A IE 182775A IE 41452 L IE41452 L IE 41452L
- Authority
- IE
- Ireland
- Prior art keywords
- support
- aug
- cavity
- fire detector
- electronic circuitry
- Prior art date
Links
Classifications
-
- 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
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
- G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
-
- 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
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Control Of Combustion (AREA)
- Fire Alarms (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
1492193 Ionization detectors ANGLO AMERICAN CORP OF SOUTH AFRICA Ltd 19 Aug 1975 [26 Aug 1974] 34390/75 Heading H1D In a fire detector having an ionization chamber 12 in which a grid electrode 14 is mounted from the housing 10 by an insulating support 16, a heat generating component 28 of the electronic circuitry associated with the detector is mounted within a cavity 26 formed in the support 16 to heat the surrounding part of the support 16 and thus prevent leakage currents between the electrode and housing due to the formation of moisture on the support 16. As shown, the component 28, e.g. an operational amplifier is mounted within a vertical limb 24 of support 16 to which is attached the grid 14. The remainder of the electronic circuitry is mounted in a box 20 in a cavity 22 in the support 16.
[GB1492193A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA00745453A ZA745453B (en) | 1974-08-26 | 1974-08-26 | Improvements in or relating to fire detectors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE41452L true IE41452L (en) | 1976-02-26 |
| IE41452B1 IE41452B1 (en) | 1980-01-02 |
Family
ID=25568066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1827/75A IE41452B1 (en) | 1974-08-26 | 1975-08-19 | Improvements in or relating to fire detectors |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5635236B2 (en) |
| AU (1) | AU501762B2 (en) |
| BE (1) | BE832768A (en) |
| BR (1) | BR7505431A (en) |
| CA (1) | CA1042088A (en) |
| CH (1) | CH600455A5 (en) |
| DE (1) | DE2537598C3 (en) |
| DK (1) | DK136793B (en) |
| FR (1) | FR2283492A1 (en) |
| GB (1) | GB1492193A (en) |
| IE (1) | IE41452B1 (en) |
| IN (1) | IN143233B (en) |
| IT (1) | IT1042015B (en) |
| LU (1) | LU73252A1 (en) |
| NL (1) | NL167785C (en) |
| NO (1) | NO138307C (en) |
| PH (1) | PH11514A (en) |
| SE (1) | SE439209B (en) |
| SU (1) | SU703038A3 (en) |
| YU (1) | YU37410B (en) |
| ZA (1) | ZA745453B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2711457C2 (en) * | 1977-03-16 | 1985-06-27 | Siemens AG, 1000 Berlin und 8000 München | Ionization fire detector |
| CH681932A5 (en) * | 1990-12-04 | 1993-06-15 | Cerberus Ag | |
| CH682423A5 (en) * | 1991-03-13 | 1993-09-15 | Asea Brown Boveri | Method and apparatus for measuring the concentration of a gas contained in particles. |
| DE102004020489B4 (en) * | 2004-04-26 | 2007-06-28 | Minimax Gmbh & Co. Kg | Fire detector for use in outdoor atmosphere |
| CN110185461A (en) * | 2019-06-28 | 2019-08-30 | 中交路桥建设有限公司 | The shield machine of real-time detection tunnel geology condition |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2408051A (en) * | 1942-04-04 | 1946-09-24 | American District Telegraph Co | Fire and smoke detector and the like |
| DE2204930C3 (en) * | 1971-02-08 | 1974-06-20 | Veb Rft Messelektronik Otto Schoen, X 8016 Dresden | Ionization fire alarms |
| JPS485979U (en) * | 1971-06-04 | 1973-01-23 |
-
1974
- 1974-08-26 ZA ZA00745453A patent/ZA745453B/en unknown
-
1975
- 1975-08-19 GB GB34390/75A patent/GB1492193A/en not_active Expired
- 1975-08-19 IE IE1827/75A patent/IE41452B1/en unknown
- 1975-08-19 IN IN1615/CAL/75A patent/IN143233B/en unknown
- 1975-08-20 AU AU84121/75A patent/AU501762B2/en not_active Expired
- 1975-08-21 CH CH1087075A patent/CH600455A5/xx not_active IP Right Cessation
- 1975-08-21 NL NL7509918A patent/NL167785C/en not_active IP Right Cessation
- 1975-08-23 DE DE2537598A patent/DE2537598C3/en not_active Expired
- 1975-08-25 PH PH17497A patent/PH11514A/en unknown
- 1975-08-25 LU LU73252A patent/LU73252A1/xx unknown
- 1975-08-25 IT IT26556/75A patent/IT1042015B/en active
- 1975-08-25 SU SU752167381A patent/SU703038A3/en active
- 1975-08-25 NO NO75752918A patent/NO138307C/en unknown
- 1975-08-25 CA CA234,041A patent/CA1042088A/en not_active Expired
- 1975-08-25 BR BR7505431*A patent/BR7505431A/en unknown
- 1975-08-26 SE SE7509478A patent/SE439209B/en not_active IP Right Cessation
- 1975-08-26 FR FR7526259A patent/FR2283492A1/en active Granted
- 1975-08-26 YU YU2167/75A patent/YU37410B/en unknown
- 1975-08-26 DK DK384275AA patent/DK136793B/en unknown
- 1975-08-26 BE BE159485A patent/BE832768A/en not_active IP Right Cessation
- 1975-08-26 JP JP10336475A patent/JPS5635236B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2537598C3 (en) | 1984-12-20 |
| YU216775A (en) | 1983-04-27 |
| JPS5635236B2 (en) | 1981-08-15 |
| FR2283492B1 (en) | 1979-05-04 |
| GB1492193A (en) | 1977-11-16 |
| NO138307B (en) | 1978-05-02 |
| SE7509478L (en) | 1976-02-27 |
| DK136793B (en) | 1977-11-21 |
| IT1042015B (en) | 1980-01-30 |
| BE832768A (en) | 1975-12-16 |
| NL167785B (en) | 1981-08-17 |
| DE2537598B2 (en) | 1980-11-06 |
| IE41452B1 (en) | 1980-01-02 |
| LU73252A1 (en) | 1976-05-31 |
| SE439209B (en) | 1985-06-03 |
| CA1042088A (en) | 1978-11-07 |
| NL7509918A (en) | 1976-03-01 |
| PH11514A (en) | 1978-02-01 |
| AU8412175A (en) | 1977-02-24 |
| ZA745453B (en) | 1976-04-28 |
| JPS5149784A (en) | 1976-04-30 |
| NL167785C (en) | 1982-01-18 |
| AU501762B2 (en) | 1979-06-28 |
| SU703038A3 (en) | 1979-12-05 |
| NO752918L (en) | 1976-02-27 |
| IN143233B (en) | 1977-10-22 |
| YU37410B (en) | 1984-08-31 |
| DE2537598A1 (en) | 1976-03-11 |
| FR2283492A1 (en) | 1976-03-26 |
| DK384275A (en) | 1976-02-27 |
| NO138307C (en) | 1978-08-16 |
| CH600455A5 (en) | 1978-06-15 |
| DK136793C (en) | 1978-04-24 |
| BR7505431A (en) | 1976-08-03 |
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