GB905401A - Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number - Google Patents

Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number

Info

Publication number
GB905401A
GB905401A GB2450959A GB2450959A GB905401A GB 905401 A GB905401 A GB 905401A GB 2450959 A GB2450959 A GB 2450959A GB 2450959 A GB2450959 A GB 2450959A GB 905401 A GB905401 A GB 905401A
Authority
GB
United Kingdom
Prior art keywords
detector
target
tank
source
liquid
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
GB2450959A
Inventor
Peter Kenneth Tomkins
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.)
Burndept Ltd
Original Assignee
Burndept 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 Burndept Ltd filed Critical Burndept Ltd
Priority to GB2450959A priority Critical patent/GB905401A/en
Publication of GB905401A publication Critical patent/GB905401A/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
    • G01N23/083—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)
  • Toxicology (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)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

905,401. Automatic fluid level control systems. BURNDEPT Ltd. July 15, 1960 [July 18, 1959], No. 24509/59. Class 38 (4). [Also in Groups XVIII and XIX] Apparatus for detecting the presence or absence of a liquid 2 at a particular level in a tank 1 consists of a source 3 of beta radiation, e.g. strontium 90, disposed within the tank at that level, a target 6 which, in a steel tank, may be the wall thereof, but which, when the tank is made of a metal of low atomic number, e.g. aluminium, consists of a patch of lead or tungsten on the inner surface thereof and a detector 7 of gamma radiation which is emitted from the target as the beta rays are arrested therein. The detector 7 may be a Geiger counter or, as shown, a scintillating phosphor and a scintillation counter 8 which may include a photo multiplier. The output of the detector is applied through an amplifier 9 and a discriminator 11 to a rate meter 12 which may trigger a circuit 13 controlling an audible or visible indicator or the operation of a supply valve to the tank. In operation, when the level of liquid is below the line joining the source 3 to the target 6, a proportion of the abundance of gamma rays produced in the target impinge on the detector. When the level rises so far that the liquid 2 is interposed between the source and the target a much less intensity of gamma rays is produced in the liquid and the large diminution in gamma radiation received by the detector gives rise to the warning or controlling signal. The apparatus may also be used to detect flaws in a coated sheet, the source 3 and detector 7 being moved together along opposite sides thereof.
GB2450959A 1959-07-16 1959-07-16 Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number Expired GB905401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2450959A GB905401A (en) 1959-07-16 1959-07-16 Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2450959A GB905401A (en) 1959-07-16 1959-07-16 Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number

Publications (1)

Publication Number Publication Date
GB905401A true GB905401A (en) 1962-09-05

Family

ID=10212776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2450959A Expired GB905401A (en) 1959-07-16 1959-07-16 Apparatus for detecting the presence at a particular location of a substance of relatively low atomic number

Country Status (1)

Country Link
GB (1) GB905401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835324A (en) * 1972-10-04 1974-09-10 O Weigle Pipe weld inspection method and apparatus
GB2251690A (en) * 1990-11-05 1992-07-15 Rodney Whitham Optical liquid level detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835324A (en) * 1972-10-04 1974-09-10 O Weigle Pipe weld inspection method and apparatus
GB2251690A (en) * 1990-11-05 1992-07-15 Rodney Whitham Optical liquid level detector

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