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GB895604A - Improvements in and relating to gas discharge tube detectors - Google Patents

Improvements in and relating to gas discharge tube detectors

Info

Publication number
GB895604A
GB895604A GB4185658A GB4185658A GB895604A GB 895604 A GB895604 A GB 895604A GB 4185658 A GB4185658 A GB 4185658A GB 4185658 A GB4185658 A GB 4185658A GB 895604 A GB895604 A GB 895604A
Authority
GB
United Kingdom
Prior art keywords
gas
tube
voltage
tubes
discharge tube
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
GB4185658A
Inventor
Vincent Willis
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4185658A priority Critical patent/GB895604A/en
Publication of GB895604A publication Critical patent/GB895604A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • 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
    • G01N27/68—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 electric discharge to ionise a gas
    • G01N27/70—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 electric discharge to ionise a gas and measuring current or voltage

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)
  • Electrostatic Separation (AREA)
  • Fuel Cell (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

895,604. Determining qualities of materials. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 18, 1959 [Dec. 29, 1958], No. 41856/58. Class 37. A gas or vapour discharge tube is associated with means for detecting and measuring the variation of voltage across the tube and is operated under constant current conditions. Constant. current conditions are achieved by putting the gas discharge tube in the anode circuit of a pentode. As shown, two tubes D1, D2 operating at a pressure of 4 mm. Hg, are placed in the anode circuits of pentodes V1, V2. One tube D1 has carrier gas only and the other tube D2 carrier gas plus the sample of gas or vapour to be detected and a recording potentiometer RP measures the difference in voltage of the two tubes. The voltage difference bears a linear relationship to the gas concentration. The tubes are operated on a part of their characteristic where the burning voltage is constant with variation of discharge current. The device is used as a gas detector in gas chromatography. Specification 895,602 is referred to.
GB4185658A 1958-12-29 1958-12-29 Improvements in and relating to gas discharge tube detectors Expired GB895604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4185658A GB895604A (en) 1958-12-29 1958-12-29 Improvements in and relating to gas discharge tube detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4185658A GB895604A (en) 1958-12-29 1958-12-29 Improvements in and relating to gas discharge tube detectors

Publications (1)

Publication Number Publication Date
GB895604A true GB895604A (en) 1962-05-02

Family

ID=10421658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4185658A Expired GB895604A (en) 1958-12-29 1958-12-29 Improvements in and relating to gas discharge tube detectors

Country Status (1)

Country Link
GB (1) GB895604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899560A1 (en) * 1996-07-26 1999-03-03 Valco Instruments Company, Inc. Detecting compounds using induced photoionization for electron capture detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899560A1 (en) * 1996-07-26 1999-03-03 Valco Instruments Company, Inc. Detecting compounds using induced photoionization for electron capture detection

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