GB2420860A - Electrochemical gas sensor - Google Patents

Electrochemical gas sensor Download PDF

Info

Publication number
GB2420860A
GB2420860A GB0600826A GB0600826A GB2420860A GB 2420860 A GB2420860 A GB 2420860A GB 0600826 A GB0600826 A GB 0600826A GB 0600826 A GB0600826 A GB 0600826A GB 2420860 A GB2420860 A GB 2420860A
Authority
GB
United Kingdom
Prior art keywords
gas
gas sensor
sensing electrode
electrode
electrochemical gas
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.)
Granted
Application number
GB0600826A
Other versions
GB0600826D0 (en
GB2420860B (en
Inventor
Teddy Ka Wai Chow
Martin John Willett
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.)
City Technology Ltd
Original Assignee
City Technology 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 City Technology Ltd filed Critical City Technology Ltd
Publication of GB0600826D0 publication Critical patent/GB0600826D0/en
Publication of GB2420860A publication Critical patent/GB2420860A/en
Application granted granted Critical
Publication of GB2420860B publication Critical patent/GB2420860B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
    • G01N27/4045—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors for gases other than oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

An electrochemical gas sensor for detecting at least one gas species present in an atmosphere. The gas sensor comprises: a first gas sensing electrode (16) adapted to detect at least a first target gas species; a first gas path (30) for guiding the gas to the first gas sensing electrode; a second gas sensing electrode (20) adapted to detect at least a second target gas species, the first and second gas sensing electrodes being located on opposite sides of an electrolyte-containing region; a second gas path (31) between the atmosphere and the second electrode, the gas path bypassing the first gas sensing electrode; and a counter electrode (45).

Description

GB 2420860 A continuation (72) Inventor(s): Teddy Ka Wai Chow Martin John
Willett (74) Agent and/or Address for Service: Gill Jennings & Every Broadgate House, 7 Eldon Street, LONDON, EC2M 7LH, United Kingdom
GB0600826A 2003-07-22 2004-07-07 Electrochemical gas sensor Expired - Lifetime GB2420860B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0317131A GB0317131D0 (en) 2003-07-22 2003-07-22 Electrochemical gas sensor
PCT/GB2004/002929 WO2005015195A1 (en) 2003-07-22 2004-07-07 Electrochemical gas sensor

Publications (3)

Publication Number Publication Date
GB0600826D0 GB0600826D0 (en) 2006-02-22
GB2420860A true GB2420860A (en) 2006-06-07
GB2420860B GB2420860B (en) 2007-12-27

Family

ID=27772446

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0317131A Ceased GB0317131D0 (en) 2003-07-22 2003-07-22 Electrochemical gas sensor
GB0600826A Expired - Lifetime GB2420860B (en) 2003-07-22 2004-07-07 Electrochemical gas sensor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0317131A Ceased GB0317131D0 (en) 2003-07-22 2003-07-22 Electrochemical gas sensor

Country Status (2)

Country Link
GB (2) GB0317131D0 (en)
WO (1) WO2005015195A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2409524B (en) * 2003-12-16 2007-08-15 Alphasense Ltd Electrochemical sensor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026306B4 (en) * 2005-06-08 2007-07-19 Dräger Safety AG & Co. KGaA gas sensor
DE102005026491B4 (en) * 2005-06-09 2007-05-16 Draeger Safety Ag & Co Kgaa Electrochemical gas sensor arrangement
US7967965B2 (en) 2007-05-11 2011-06-28 Honeywell International Inc. Gas sensor
GB0709166D0 (en) 2007-05-11 2007-06-20 Honeywell Int Inc Gas sensors
US10386325B2 (en) * 2014-07-31 2019-08-20 Life Safety Distribution Gmbh Gas sensor with partitioned filter
US20170336343A1 (en) * 2016-05-19 2017-11-23 InSyte Systems Integrated sensing device for detecting gasses
US10908117B2 (en) 2018-01-22 2021-02-02 InSyte Systems, Inc. Low impedance sensor for low density materials
CN112924501A (en) * 2019-12-05 2021-06-08 瑞益系统公司 Electrochemical gas sensor assembly
DE102021116238A1 (en) * 2021-06-23 2022-12-29 Testo SE & Co. KGaA Electrochemical gas sensor
CN115728370A (en) * 2021-08-31 2023-03-03 霍尼韦尔国际公司 Methods, devices, and systems for providing gas detection devices and sensing components with filter elements

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293541A1 (en) * 1987-06-05 1988-12-07 ORBISPHERE LABORATORIES (INC.), Wilmington, Succursale de Collonge-Bellerive Amperometric apparatus, cell and method for determination of different gaseous species
DE4041143C1 (en) * 1990-12-21 1992-03-12 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Electrochemical sensor for detecting pollutants in gaseous mixt. - consists of chamber contg. acidic electrolyte, 2 layered electrodes, catalyst layer and porous PTFE backing layer
US5723036A (en) * 1995-09-13 1998-03-03 Dragerwerk Aktiengesellschaft Electrochemical measuring cell
US5932079A (en) * 1996-06-07 1999-08-03 Dragerwerk Ag Electrochemical multigas sensor
EP1154267A2 (en) * 2000-05-13 2001-11-14 Alphasense Limited Electrochemical sensor for determining analyte in the presence of interferent
US6428665B1 (en) * 1998-10-16 2002-08-06 Varta Geratebatterie Gmbh Electrochemical gas sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293541A1 (en) * 1987-06-05 1988-12-07 ORBISPHERE LABORATORIES (INC.), Wilmington, Succursale de Collonge-Bellerive Amperometric apparatus, cell and method for determination of different gaseous species
DE4041143C1 (en) * 1990-12-21 1992-03-12 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Electrochemical sensor for detecting pollutants in gaseous mixt. - consists of chamber contg. acidic electrolyte, 2 layered electrodes, catalyst layer and porous PTFE backing layer
US5723036A (en) * 1995-09-13 1998-03-03 Dragerwerk Aktiengesellschaft Electrochemical measuring cell
US5932079A (en) * 1996-06-07 1999-08-03 Dragerwerk Ag Electrochemical multigas sensor
US6428665B1 (en) * 1998-10-16 2002-08-06 Varta Geratebatterie Gmbh Electrochemical gas sensor
EP1154267A2 (en) * 2000-05-13 2001-11-14 Alphasense Limited Electrochemical sensor for determining analyte in the presence of interferent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2409524B (en) * 2003-12-16 2007-08-15 Alphasense Ltd Electrochemical sensor
US7651597B2 (en) 2003-12-16 2010-01-26 Alphasense Limited Electrochemical sensor

Also Published As

Publication number Publication date
WO2005015195A1 (en) 2005-02-17
GB0317131D0 (en) 2003-08-27
GB0600826D0 (en) 2006-02-22
GB2420860B (en) 2007-12-27

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