GB1324662A - Oxygen monitoring instrument - Google Patents

Oxygen monitoring instrument

Info

Publication number
GB1324662A
GB1324662A GB1324662DA GB1324662A GB 1324662 A GB1324662 A GB 1324662A GB 1324662D A GB1324662D A GB 1324662DA GB 1324662 A GB1324662 A GB 1324662A
Authority
GB
United Kingdom
Prior art keywords
probe
monitoring instrument
oxygen monitoring
meterrelay
polyethelyene
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
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.)
British Gas Corp
Original Assignee
British Gas 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 British Gas Corp filed Critical British Gas Corp
Publication of GB1324662A publication Critical patent/GB1324662A/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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

1324662 Electrochemical analysis BRITISH GAS CORP 18 April 1972 [20 Jan 1971] 2797/ 71 Heading G1N Apparatus for monitoring oxygen in the atmosphere comprises a probe 1 connected to a meterrelay 4 controlling switching transistors to energize HIGH and LOW lamps 10, 13 and a bell 11. The probe is preferably an electrochemical cell with a sintered lead central electrode surrounded by a perforated silver electrode and a tubular polyethelyene membrane.
GB1324662D 1971-01-20 1971-01-20 Oxygen monitoring instrument Expired GB1324662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB279771 1971-01-20

Publications (1)

Publication Number Publication Date
GB1324662A true GB1324662A (en) 1973-07-25

Family

ID=9746108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1324662D Expired GB1324662A (en) 1971-01-20 1971-01-20 Oxygen monitoring instrument

Country Status (1)

Country Link
GB (1) GB1324662A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002795A1 (en) * 1979-06-21 1980-12-24 Novametrix Med Syst Inc Transcutaneous oxygen and local perfusion measurement
FR2560378A1 (en) * 1984-02-29 1985-08-30 Bensussan Guy Device for personal protection relating to the level of oxygen in breathable air
GB2173056A (en) * 1985-03-26 1986-10-01 Mcmurdo Instr Co Ltd The Hybrid battery for battery powered devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002795A1 (en) * 1979-06-21 1980-12-24 Novametrix Med Syst Inc Transcutaneous oxygen and local perfusion measurement
US4290431A (en) * 1979-06-21 1981-09-22 Novametrix Medical Systems, Inc. Transcutaneous oxygen and local perfusion measurement
FR2560378A1 (en) * 1984-02-29 1985-08-30 Bensussan Guy Device for personal protection relating to the level of oxygen in breathable air
GB2173056A (en) * 1985-03-26 1986-10-01 Mcmurdo Instr Co Ltd The Hybrid battery for battery powered devices

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees