NL298945A - - Google Patents
Info
- Publication number
- NL298945A NL298945A NL298945DA NL298945A NL 298945 A NL298945 A NL 298945A NL 298945D A NL298945D A NL 298945DA NL 298945 A NL298945 A NL 298945A
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/12—Provision for actuation of an alarm
- G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
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- 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
-
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/185—Measuring radiation intensity with ionisation chamber arrangements
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- 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
- G08B17/11—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
Landscapes
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- High Energy & Nuclear Physics (AREA)
- Toxicology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR912026A FR1344369A (fr) | 1962-10-12 | 1962-10-12 | Circuits d'exploitation d'une tension continue variable à des fins de contrôle et d signalisation |
Publications (1)
Publication Number | Publication Date |
---|---|
NL298945A true NL298945A (is) |
Family
ID=8788555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL298945D NL298945A (is) | 1962-10-12 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3382364A (is) |
BE (1) | BE638121A (is) |
CH (1) | CH414404A (is) |
DE (1) | DE1437447A1 (is) |
FR (1) | FR1344369A (is) |
GB (1) | GB1040076A (is) |
LU (1) | LU44540A1 (is) |
NL (1) | NL298945A (is) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1540305A (fr) * | 1967-02-09 | 1968-09-27 | Dispositif perfectionné de détection d'incendie | |
FI55731C (fi) * | 1968-12-26 | 1979-09-10 | Hochiki Co | Alarmanordning |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735944A (en) * | 1956-02-21 | greer | ||
US2876360A (en) * | 1953-11-16 | 1959-03-03 | John A Victoreen | Apparatus for the comparison of sources of radiation |
FR1158563A (fr) * | 1956-09-14 | 1958-06-17 | Commissariat Energie Atomique | Détecteur de radon |
US3056123A (en) * | 1958-07-29 | 1962-09-25 | Tung Sol Electric Inc | Radiation alarm or the like |
US3009098A (en) * | 1958-08-15 | 1961-11-14 | Nat Res Corp | Electrical apparatus for analyzing gases |
CH380594A (de) * | 1960-11-02 | 1964-07-31 | Securiton Ag | Ionisations-Brandmeldeanlage |
-
0
- NL NL298945D patent/NL298945A/xx unknown
- BE BE638121D patent/BE638121A/xx unknown
-
1962
- 1962-10-12 FR FR912026A patent/FR1344369A/fr not_active Expired
-
1963
- 1963-10-01 LU LU44540D patent/LU44540A1/xx unknown
- 1963-10-02 GB GB38791/63A patent/GB1040076A/en not_active Expired
- 1963-10-03 CH CH1217663A patent/CH414404A/fr unknown
- 1963-10-09 US US315072A patent/US3382364A/en not_active Expired - Lifetime
- 1963-10-11 DE DE19631437447 patent/DE1437447A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
BE638121A (is) | |
DE1437447A1 (de) | 1969-12-18 |
US3382364A (en) | 1968-05-07 |
CH414404A (fr) | 1966-05-31 |
LU44540A1 (is) | 1969-12-02 |
GB1040076A (en) | 1966-08-24 |
FR1344369A (fr) | 1963-11-29 |