GB1186525A - Improvements in "Ion Chamber Detector" - Google Patents
Improvements in "Ion Chamber Detector"Info
- Publication number
- GB1186525A GB1186525A GB40298/67A GB4029867A GB1186525A GB 1186525 A GB1186525 A GB 1186525A GB 40298/67 A GB40298/67 A GB 40298/67A GB 4029867 A GB4029867 A GB 4029867A GB 1186525 A GB1186525 A GB 1186525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- sept
- openings
- gaseous carrier
- pass
- 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.)
- Expired
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 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
- G08B17/113—Constructional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
- H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
1,186,525. lonization chambers. GENERAL ELECTRIC CO. 4 Sept., 1967 [12 Sept., 1966], No. 40298/67. Heading HID. Apparatus for detecting sub-micron particles in a gaseous carrier comprises a mixing and gas ionizing section, including means 17 for imparting turbulent flow to said gas, means 15 defining a delay volume 18 for receiving the particle-bearing gas and a source 25 of radiation to effect ionization of the gaseous carrier, operably joined to a detector section 30 including spaced electrodes 31 and 33. Gas, e.g. air, and entrained particles pass from an inlet 13 through openings 19 in diffusion baffle 17 to the delay volume 18 where the gas is ionized by an alpha source 25, e.g. Th 232, distributed uniformly along the wall of member 15, and then pass through openings 27 to the detector section 30, emerging through an opening 35 and leaving through exit 14. Electrode 31 is connected by a cable 36 to a sensing and amplifying device, e.g. an electrometer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57888466A | 1966-09-12 | 1966-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1186525A true GB1186525A (en) | 1970-04-02 |
Family
ID=24314704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40298/67A Expired GB1186525A (en) | 1966-09-12 | 1967-09-04 | Improvements in "Ion Chamber Detector" |
Country Status (4)
Country | Link |
---|---|
US (1) | US3573460A (en) |
JP (1) | JPS4930160B1 (en) |
DE (1) | DE1648902B2 (en) |
GB (1) | GB1186525A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2147734A (en) * | 1983-08-11 | 1985-05-15 | Varian Associates | Flow contoured electron capture detector cell |
US4651008A (en) * | 1983-08-11 | 1987-03-17 | Varian Associates, Inc. | Sample inlet system for an electron capture detector |
US4684807A (en) * | 1983-08-11 | 1987-08-04 | Varian Associates, Inc. | Flow contoured electron capture detector cell |
EP0524022A1 (en) * | 1991-07-19 | 1993-01-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern | Gas detection device and method |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892968A (en) * | 1971-08-06 | 1975-07-01 | James Ephraim Lovelock | Electron capture detector systems |
US3973438A (en) * | 1973-08-21 | 1976-08-10 | Westinghouse Electric Corporation | Composition for forming thermo-particulating coating which protects electrical apparatus |
US4046733A (en) * | 1975-12-30 | 1977-09-06 | Westinghouse Electric Corporation | Sulfonic acid composition for forming thermoparticulating coating |
US4130009A (en) * | 1976-03-23 | 1978-12-19 | Westinghouse Electric Corp. | Method and apparatus for determining thermoparticulation temperature of compounds |
US4055075A (en) * | 1976-04-08 | 1977-10-25 | Flanders Filters, Inc. | Method and apparatus for the leak testing of filters |
US4102192A (en) * | 1976-04-13 | 1978-07-25 | Westinghouse Electric Corp. | Metallic carboxylate composition for forming thermoparticulating coating |
US4053776A (en) * | 1976-05-25 | 1977-10-11 | The United States Of America As Represented By Thesecretary Of The Interior | Sub-micron particle detector |
US4080535A (en) * | 1976-08-17 | 1978-03-21 | Westinghouse Electric Corporation | Generator condition monitor for particulate detection |
US4074137A (en) * | 1976-09-02 | 1978-02-14 | General Electric Company | Heated ion chamber detector for a dynamoelectric machine |
US4108001A (en) * | 1976-09-23 | 1978-08-22 | Westinghouse Electric Corp. | Urea composition for forming thermoparticulating coating |
US4121458A (en) * | 1977-02-24 | 1978-10-24 | Westinghouse Electric Corp. | Reliable dynamoelectric machine condition monitor |
US4119851A (en) * | 1977-06-23 | 1978-10-10 | Honeywell Inc. | Apparatus and a method for detecting and measuring trace gases in air or other gas backgrounds |
EP0000585B1 (en) * | 1977-08-01 | 1983-03-09 | General Electric Company | Automatic control system for processing signals from an overheat monitor of a dynamoelectric machine |
US4160908A (en) * | 1978-01-30 | 1979-07-10 | Westinghouse Electric Corp. | Particulate enhancement for generator condition monitors |
US4520157A (en) * | 1982-12-22 | 1985-05-28 | Westinghouse Electric Corp. | Early warning fire-detection paint |
CH682423A5 (en) * | 1991-03-13 | 1993-09-15 | Asea Brown Boveri | Method and apparatus for measuring the concentration of a gas contained in particles. |
JP2002014080A (en) | 2000-06-28 | 2002-01-18 | Mitsubishi Electric Corp | Device and system for monitoring cooling gas in generator |
US7369057B2 (en) * | 2005-08-04 | 2008-05-06 | Siemens Power Generation, Inc. | Power generator and power generator auxiliary monitoring |
US7549803B2 (en) * | 2007-04-05 | 2009-06-23 | Siemens Energy, Inc. | Fiber optic generator condition monitor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB919208A (en) * | 1958-09-12 | 1963-02-20 | Nat Res Dev | Improvements in or relating to the detection and/or analysis of low concentrations of gases and vapours |
NL266283A (en) * | 1960-06-27 | |||
US3178930A (en) * | 1963-04-08 | 1965-04-20 | Little Inc A | Monitor and spectrometer for atmospheric particulate matter |
-
1966
- 1966-09-12 US US578884A patent/US3573460A/en not_active Expired - Lifetime
-
1967
- 1967-08-30 JP JP42056048A patent/JPS4930160B1/ja active Pending
- 1967-08-31 DE DE1967G0050999 patent/DE1648902B2/en active Granted
- 1967-09-04 GB GB40298/67A patent/GB1186525A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2147734A (en) * | 1983-08-11 | 1985-05-15 | Varian Associates | Flow contoured electron capture detector cell |
US4651008A (en) * | 1983-08-11 | 1987-03-17 | Varian Associates, Inc. | Sample inlet system for an electron capture detector |
US4684807A (en) * | 1983-08-11 | 1987-08-04 | Varian Associates, Inc. | Flow contoured electron capture detector cell |
EP0524022A1 (en) * | 1991-07-19 | 1993-01-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern | Gas detection device and method |
WO1993002354A1 (en) * | 1991-07-19 | 1993-02-04 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Gas detection device and method |
GB2272297A (en) * | 1991-07-19 | 1994-05-11 | Secr Defence | Gas detection device and method |
GB2272297B (en) * | 1991-07-19 | 1995-05-17 | Secr Defence | Gas detection device and method |
AU660703B2 (en) * | 1991-07-19 | 1995-07-06 | Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland, The | Gas detection device and method |
US5572137A (en) * | 1991-07-19 | 1996-11-05 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Portable device for detecting UV light ionizable gas or vapor |
Also Published As
Publication number | Publication date |
---|---|
US3573460A (en) | 1971-04-06 |
DE1648902B2 (en) | 1976-12-02 |
DE1648902A1 (en) | 1971-05-13 |
JPS4930160B1 (en) | 1974-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |