JPS55136942A - Detecting method and apparatus for fluoride gas - Google Patents

Detecting method and apparatus for fluoride gas

Info

Publication number
JPS55136942A
JPS55136942A JP4432179A JP4432179A JPS55136942A JP S55136942 A JPS55136942 A JP S55136942A JP 4432179 A JP4432179 A JP 4432179A JP 4432179 A JP4432179 A JP 4432179A JP S55136942 A JPS55136942 A JP S55136942A
Authority
JP
Japan
Prior art keywords
light
fluid
inspected
gas
passage
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.)
Pending
Application number
JP4432179A
Other languages
Japanese (ja)
Inventor
Tatsuhiko Uda
Hajime Iba
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4432179A priority Critical patent/JPS55136942A/en
Publication of JPS55136942A publication Critical patent/JPS55136942A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

PURPOSE:To continuously and surely detect fluoride gas by contact-circulating the fluid to be inspected whose flow rate is previously measured through the substance whose light transmissivity varies as the reaction with fluoride gas proceeds to detect the quantity of transmitted light. CONSTITUTION:In a UF6 handling equipment, the gas leaking out into the atmosphere changes into HF gas, which, together with the air, is inhaled as a fluid to be inspected 12 into a passage 1 by a suction-exhaust pump 2. The suction flow-rate, which is regulated to be constant by a flow-rate controlling valve 3, is measured by a flow meter 4. The fluid to be inspected passing through the passage 1 circulates through the space between each layer of a light-transmission substance 5, and reaches the pump 2. In the process, HF gas contained in the fluid to be inspected contacts the light-transmission substance 5, and reacts, so that the surface of the passage becomes cloudy, to which light of a fixed wave-length is applied from a light source 6. The transmitted light is received by a light detector 7, which delivers an output corresponding to the quantity of detection. The output is compared with that from a reference-output generator 10, and the concentration value is displayed in an indicator 11.
JP4432179A 1979-04-13 1979-04-13 Detecting method and apparatus for fluoride gas Pending JPS55136942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4432179A JPS55136942A (en) 1979-04-13 1979-04-13 Detecting method and apparatus for fluoride gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4432179A JPS55136942A (en) 1979-04-13 1979-04-13 Detecting method and apparatus for fluoride gas

Publications (1)

Publication Number Publication Date
JPS55136942A true JPS55136942A (en) 1980-10-25

Family

ID=12688217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4432179A Pending JPS55136942A (en) 1979-04-13 1979-04-13 Detecting method and apparatus for fluoride gas

Country Status (1)

Country Link
JP (1) JPS55136942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434893A2 (en) * 1989-11-24 1991-07-03 Mitsubishi Denki Kabushiki Kaisha Abnormality detecting device
WO1993006480A1 (en) * 1991-09-17 1993-04-01 Exxon Research And Engineering Company Hydrogen fluoride sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434893A2 (en) * 1989-11-24 1991-07-03 Mitsubishi Denki Kabushiki Kaisha Abnormality detecting device
WO1993006480A1 (en) * 1991-09-17 1993-04-01 Exxon Research And Engineering Company Hydrogen fluoride sensor

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