GB1550615A - Fail safe gas detector - Google Patents

Fail safe gas detector

Info

Publication number
GB1550615A
GB1550615A GB3012075A GB3012075A GB1550615A GB 1550615 A GB1550615 A GB 1550615A GB 3012075 A GB3012075 A GB 3012075A GB 3012075 A GB3012075 A GB 3012075A GB 1550615 A GB1550615 A GB 1550615A
Authority
GB
United Kingdom
Prior art keywords
fail safe
gas detector
safe gas
detector
fail
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
GB3012075A
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.)
Electrical Remote Control Co Ltd
Original Assignee
Electrical Remote Control Co 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 Electrical Remote Control Co Ltd filed Critical Electrical Remote Control Co Ltd
Priority to GB3012075A priority Critical patent/GB1550615A/en
Publication of GB1550615A publication Critical patent/GB1550615A/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
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
GB3012075A 1976-07-16 1976-07-16 Fail safe gas detector Expired GB1550615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3012075A GB1550615A (en) 1976-07-16 1976-07-16 Fail safe gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3012075A GB1550615A (en) 1976-07-16 1976-07-16 Fail safe gas detector

Publications (1)

Publication Number Publication Date
GB1550615A true GB1550615A (en) 1979-08-15

Family

ID=10302611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3012075A Expired GB1550615A (en) 1976-07-16 1976-07-16 Fail safe gas detector

Country Status (1)

Country Link
GB (1) GB1550615A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325050A2 (en) * 1987-12-23 1989-07-26 Michell Instruments Ltd Hygrometer
WO2018212966A1 (en) * 2017-05-17 2018-11-22 Msa Technology, Llc Dynamic comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
US10627379B2 (en) 2017-05-17 2020-04-21 Msa Technology, Llc Comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
US10900922B2 (en) 2018-07-17 2021-01-26 Msa Technology, Llc Power reduction in combustible gas sensors
US10957180B2 (en) 2017-05-12 2021-03-23 Robert Levine Confined space failsafe access system
US11268923B2 (en) 2019-06-11 2022-03-08 Msa Technology, Llc Sensor for compositions which deposit upon a surface from a gaseous matrix
US11543396B2 (en) 2019-06-11 2023-01-03 Msa Technology, Llc Gas sensor with separate contaminant detection element
US11703473B2 (en) 2019-12-11 2023-07-18 Msa Technology, Llc Operation of combustible gas sensor in a dynamic mode with a constant resistance setpoint
EP4283286A1 (en) * 2022-05-24 2023-11-29 Honeywell International Inc. Method, apparatus and system for monitoring sensor health and gas response for catalytic pellistor poisoning

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325050A2 (en) * 1987-12-23 1989-07-26 Michell Instruments Ltd Hygrometer
EP0325050A3 (en) * 1987-12-23 1990-05-09 Michell Instruments Ltd Hygrometer
US10957180B2 (en) 2017-05-12 2021-03-23 Robert Levine Confined space failsafe access system
US10948469B2 (en) 2017-05-17 2021-03-16 Msa Technology, Llc Dynamic comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
US10627379B2 (en) 2017-05-17 2020-04-21 Msa Technology, Llc Comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
CN110268255A (en) * 2017-05-17 2019-09-20 Msa技术有限公司 It is diagnosed for catalytic structure with the Dynamic comparison of the combustible gas sensor including catalytic structure
WO2018212966A1 (en) * 2017-05-17 2018-11-22 Msa Technology, Llc Dynamic comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
AU2018269399B2 (en) * 2017-05-17 2021-08-12 Msa Technology, Llc Dynamic comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
US11761935B2 (en) 2017-05-17 2023-09-19 Msa Technology, Llc Dynamic comparative diagnostics for catalytic structures and combustible gas sensors including catalytic structures
US10900922B2 (en) 2018-07-17 2021-01-26 Msa Technology, Llc Power reduction in combustible gas sensors
US11268923B2 (en) 2019-06-11 2022-03-08 Msa Technology, Llc Sensor for compositions which deposit upon a surface from a gaseous matrix
US11543396B2 (en) 2019-06-11 2023-01-03 Msa Technology, Llc Gas sensor with separate contaminant detection element
US11846617B2 (en) 2019-06-11 2023-12-19 Msa Technology, Llc Gas sensor with separate contaminant detection element
US11703473B2 (en) 2019-12-11 2023-07-18 Msa Technology, Llc Operation of combustible gas sensor in a dynamic mode with a constant resistance setpoint
EP4283286A1 (en) * 2022-05-24 2023-11-29 Honeywell International Inc. Method, apparatus and system for monitoring sensor health and gas response for catalytic pellistor poisoning

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Legal Events

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