GB2267968B - Gas sensing transducer elements - Google Patents

Gas sensing transducer elements

Info

Publication number
GB2267968B
GB2267968B GB9312363A GB9312363A GB2267968B GB 2267968 B GB2267968 B GB 2267968B GB 9312363 A GB9312363 A GB 9312363A GB 9312363 A GB9312363 A GB 9312363A GB 2267968 B GB2267968 B GB 2267968B
Authority
GB
United Kingdom
Prior art keywords
transducer elements
gas sensing
sensing transducer
gas
elements
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 - Fee Related
Application number
GB9312363A
Other versions
GB2267968A (en
GB9312363D0 (en
Inventor
Peter Mcgeehin
Patrick Timothy Moseley
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.)
Capteur Sensors and Analysers Ltd
Original Assignee
Capteur Sensors and Analysers 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 Capteur Sensors and Analysers Ltd filed Critical Capteur Sensors and Analysers Ltd
Publication of GB9312363D0 publication Critical patent/GB9312363D0/en
Publication of GB2267968A publication Critical patent/GB2267968A/en
Application granted granted Critical
Publication of GB2267968B publication Critical patent/GB2267968B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/183—Single detectors using dual technologies
    • 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
    • G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • 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
GB9312363A 1992-06-15 1993-06-15 Gas sensing transducer elements Expired - Fee Related GB2267968B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929212650A GB9212650D0 (en) 1992-06-15 1992-06-15 Transducer elements

Publications (3)

Publication Number Publication Date
GB9312363D0 GB9312363D0 (en) 1993-07-28
GB2267968A GB2267968A (en) 1993-12-22
GB2267968B true GB2267968B (en) 1995-08-23

Family

ID=10717102

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929212650A Pending GB9212650D0 (en) 1991-10-24 1992-06-15 Transducer elements
GB9312363A Expired - Fee Related GB2267968B (en) 1992-06-15 1993-06-15 Gas sensing transducer elements

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929212650A Pending GB9212650D0 (en) 1991-10-24 1992-06-15 Transducer elements

Country Status (1)

Country Link
GB (2) GB9212650D0 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056339A1 (en) * 1981-01-14 1982-07-21 Westinghouse Electric Corporation A method of producing a stannic oxide type gas-detecting device
GB2248306A (en) * 1990-08-06 1992-04-01 Capteur Sensors & Analysers Gas sensing resistance transducer element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056339A1 (en) * 1981-01-14 1982-07-21 Westinghouse Electric Corporation A method of producing a stannic oxide type gas-detecting device
GB2248306A (en) * 1990-08-06 1992-04-01 Capteur Sensors & Analysers Gas sensing resistance transducer element

Also Published As

Publication number Publication date
GB9212650D0 (en) 1992-07-29
GB2267968A (en) 1993-12-22
GB9312363D0 (en) 1993-07-28

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Legal Events

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

Effective date: 19980615