GB1520749A - Measuring partial pressure of sodium vapour - Google Patents

Measuring partial pressure of sodium vapour

Info

Publication number
GB1520749A
GB1520749A GB5297075A GB5297075A GB1520749A GB 1520749 A GB1520749 A GB 1520749A GB 5297075 A GB5297075 A GB 5297075A GB 5297075 A GB5297075 A GB 5297075A GB 1520749 A GB1520749 A GB 1520749A
Authority
GB
United Kingdom
Prior art keywords
partial pressure
carrier gas
sodium
measuring
sodium vapour
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
GB5297075A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to GB5297075A priority Critical patent/GB1520749A/en
Publication of GB1520749A publication Critical patent/GB1520749A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/226—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
    • G01M3/228—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators for radiators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • 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
    • G01N27/626—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 heat to ionise a gas

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

1520749 Detecting partial pressure of sodium; detecting leaks in pipes WESTINGHOUSE ELECTRIC CORP 29 Dec 1975 52970/75 Heading G1N A method of measuring the partial pressure of sodium vapour (e.g. to detect leaks of sodium coolant in a nuclear reactor) comprises heating a thermal ionizer element, such as an electrically heated filament of thoriated iridium, introducing a carrier gas to the region of the element, applying a potential between the element and an ion collector and measuring the current therebetween. The partial pressure is then calculated using the equation:- where: I = measured current, amps. D= element diameter, cm. L= element length, cm. P Na = partial pressure of sodium vapour, atom. w= work function of element, V. IP=ionization potential of Na, V. T= element temperature, ‹K. γ = (3.513 x 10<SP>22</SP>) p (MT*)<SP>-¢</SP> number of molecules/cm<SP>2</SP> sec. where p = carrier gas pressure, mm Hg. M = molecular weight of carrier gas. T*= temperature of carrier gas, K.
GB5297075A 1975-12-29 1975-12-29 Measuring partial pressure of sodium vapour Expired GB1520749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5297075A GB1520749A (en) 1975-12-29 1975-12-29 Measuring partial pressure of sodium vapour

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5297075A GB1520749A (en) 1975-12-29 1975-12-29 Measuring partial pressure of sodium vapour

Publications (1)

Publication Number Publication Date
GB1520749A true GB1520749A (en) 1978-08-09

Family

ID=10466103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5297075A Expired GB1520749A (en) 1975-12-29 1975-12-29 Measuring partial pressure of sodium vapour

Country Status (1)

Country Link
GB (1) GB1520749A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579483A1 (en) * 1992-07-13 1994-01-19 Ford Motor Company Workfunction Based A/F Sensor
EP0583071A1 (en) * 1992-07-14 1994-02-16 Ford Motor Company Wide range workfunction based A/F sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579483A1 (en) * 1992-07-13 1994-01-19 Ford Motor Company Workfunction Based A/F Sensor
EP0583071A1 (en) * 1992-07-14 1994-02-16 Ford Motor Company Wide range workfunction based A/F sensor

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee