GB9027352D0 - Gas detection system - Google Patents

Gas detection system

Info

Publication number
GB9027352D0
GB9027352D0 GB909027352A GB9027352A GB9027352D0 GB 9027352 D0 GB9027352 D0 GB 9027352D0 GB 909027352 A GB909027352 A GB 909027352A GB 9027352 A GB9027352 A GB 9027352A GB 9027352 D0 GB9027352 D0 GB 9027352D0
Authority
GB
United Kingdom
Prior art keywords
detection system
gas detection
gas
detection
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.)
Withdrawn
Application number
GB909027352A
Other versions
GB2239527A (en
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.)
HRH Ltd
Original Assignee
HRH 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 HRH Ltd filed Critical HRH Ltd
Publication of GB9027352D0 publication Critical patent/GB9027352D0/en
Publication of GB2239527A publication Critical patent/GB2239527A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
    • G01N27/123—Circuits particularly adapted therefor, e.g. linearising circuits for controlling the temperature

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (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 Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
GB9027352A 1989-12-23 1990-12-18 Gas detection system Withdrawn GB2239527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898929168A GB8929168D0 (en) 1989-12-23 1989-12-23 Gas detection system

Publications (2)

Publication Number Publication Date
GB9027352D0 true GB9027352D0 (en) 1991-02-06
GB2239527A GB2239527A (en) 1991-07-03

Family

ID=10668491

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898929168A Pending GB8929168D0 (en) 1989-12-23 1989-12-23 Gas detection system
GB9027352A Withdrawn GB2239527A (en) 1989-12-23 1990-12-18 Gas detection system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898929168A Pending GB8929168D0 (en) 1989-12-23 1989-12-23 Gas detection system

Country Status (1)

Country Link
GB (2) GB8929168D0 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317440B2 (en) * 1973-10-19 1978-06-08
EP0075101A3 (en) * 1981-09-22 1985-12-04 Cerberus Ag Method and apparatus for reducing false alarms due to interferent gases in gas warning plants
GB2192459B (en) * 1986-07-07 1990-12-19 English Electric Valve Co Ltd Hydrogen sulphide sensor

Also Published As

Publication number Publication date
GB8929168D0 (en) 1990-02-28
GB2239527A (en) 1991-07-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)