GB567280A - Improvements in and relating to apparatus for testing by x-ray ionization - Google Patents

Improvements in and relating to apparatus for testing by x-ray ionization

Info

Publication number
GB567280A
GB567280A GB17512/43A GB1751243A GB567280A GB 567280 A GB567280 A GB 567280A GB 17512/43 A GB17512/43 A GB 17512/43A GB 1751243 A GB1751243 A GB 1751243A GB 567280 A GB567280 A GB 567280A
Authority
GB
United Kingdom
Prior art keywords
chambers
ionization
rays
resistance
gas
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
Application number
GB17512/43A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB17512/43A priority Critical patent/GB567280A/en
Publication of GB567280A publication Critical patent/GB567280A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/16—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a moving sheet or film
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Toxicology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

567,280. Resistance measurements; determining physical qualities and dimensions of materials. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Oct. 25, 1943, No. 17512. [Class 37] The thickness of steel plates, flaws in metal, the chemical composition of liquids, &c. are determined by measuring the degree of ionization produced by X-rays as modified by the material to be treated. Gases may be tested by measuring the extent of their ionization when subjected to X-rays: An X-ray tube 10 is energized from a source 11 and is adjustable by a variable voltage transformer 12. An adjustable shutter 13, which may be of lead, enables the exposure area of the X-ray beam 14 to be varied. The X-rays pass through the plate 18 to be tested and a standard plate 17 to ionization chambers 15, 16, the walls of which may be of lead-lined steel with the upper sides of sheet aluminium to permit passage of the X-rays. The chambers are filled with an ionizing gas such as air or carbon tetrachloride gas. The chambers may be filled with air and the bottom of the chamber moistened with carbon tetrachloride. The ionization chambers are provided with interleaved electrodes 20, 21, 22, 23, which may be of stiff paper painted with a conducting coating. The chambers 15, 16 are connected in series across a resistance 24 and batteries 25, 26, the centre point of the batteries being earthed. A slider 28 on the resistance 24 is connected to earth through a resistance 27. A portion of the voltage across this resistance is amplified by an amplifier 29, the output of which operates a sensitive measuring instrument 30. This may be provided with alarm contacts so as to operate a relay 31 or an alarm 32. With similar plates 17, 18 equal ionization occurs in the chambers 15, 16 and the bridge is balanced by adjustment of the slider 28. The plate 18. under test is then inserted and the instrument 30 indicates the deviation in thickness from the standard plate 17. The plate 18 may be a continuous strip which is moved across the testing position on rollers 33. A weld containing voids may be detected by increased passage of X-rays through it. The chambers 15, 16 are provided with valved pipes 37 by which the gas therein may be changed or varied. One chamber contains a standard gas and a gas to be tested is caused to flow through the other. The composition of flue gases &c. may thus be determined, the plates 17, 18 being removed to increase the sensitivity. Liquids may similarly be tested to determine the percentage of acid or salt.
GB17512/43A 1943-10-25 1943-10-25 Improvements in and relating to apparatus for testing by x-ray ionization Expired GB567280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17512/43A GB567280A (en) 1943-10-25 1943-10-25 Improvements in and relating to apparatus for testing by x-ray ionization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17512/43A GB567280A (en) 1943-10-25 1943-10-25 Improvements in and relating to apparatus for testing by x-ray ionization

Publications (1)

Publication Number Publication Date
GB567280A true GB567280A (en) 1945-02-06

Family

ID=10096493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17512/43A Expired GB567280A (en) 1943-10-25 1943-10-25 Improvements in and relating to apparatus for testing by x-ray ionization

Country Status (1)

Country Link
GB (1) GB567280A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537914A (en) * 1946-06-01 1951-01-09 Automatic X Ray Corp Control system
US2641710A (en) * 1951-03-02 1953-06-09 Shell Dev Radiological gas analysis
US2647214A (en) * 1947-04-04 1953-07-28 Westinghouse Electric Corp Inspecting apparatus
US2757290A (en) * 1952-04-30 1956-07-31 Standard Oil Co Ion chamber percent hydrogen instrument
US2817764A (en) * 1955-04-29 1957-12-24 Standard Oil Co Beta ray hydrogen density indicator
US2883542A (en) * 1954-09-22 1959-04-21 Standard Oil Co System for quantitative hydrogen determinations
US3158744A (en) * 1961-04-21 1964-11-24 Gen Electric Flaw detection apparatus using two detectors to assure unbalance in a comparison circuit
CN112326774A (en) * 2020-10-30 2021-02-05 四川赛康智能科技股份有限公司 High energy ray irradiation of SF6Ionization test method for gas

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537914A (en) * 1946-06-01 1951-01-09 Automatic X Ray Corp Control system
US2647214A (en) * 1947-04-04 1953-07-28 Westinghouse Electric Corp Inspecting apparatus
US2641710A (en) * 1951-03-02 1953-06-09 Shell Dev Radiological gas analysis
US2757290A (en) * 1952-04-30 1956-07-31 Standard Oil Co Ion chamber percent hydrogen instrument
US2883542A (en) * 1954-09-22 1959-04-21 Standard Oil Co System for quantitative hydrogen determinations
US2817764A (en) * 1955-04-29 1957-12-24 Standard Oil Co Beta ray hydrogen density indicator
US3158744A (en) * 1961-04-21 1964-11-24 Gen Electric Flaw detection apparatus using two detectors to assure unbalance in a comparison circuit
CN112326774A (en) * 2020-10-30 2021-02-05 四川赛康智能科技股份有限公司 High energy ray irradiation of SF6Ionization test method for gas
CN112326774B (en) * 2020-10-30 2024-04-23 四川赛康智能科技股份有限公司 SF is irradiated by high-energy rays6Ionization test method for gas

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