GB2303924A - Resistive gas sensing - Google Patents

Resistive gas sensing

Info

Publication number
GB2303924A
GB2303924A GB9622413A GB9622413A GB2303924A GB 2303924 A GB2303924 A GB 2303924A GB 9622413 A GB9622413 A GB 9622413A GB 9622413 A GB9622413 A GB 9622413A GB 2303924 A GB2303924 A GB 2303924A
Authority
GB
United Kingdom
Prior art keywords
resistive gas
gas sensing
oxide
resistive
sensor
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Withdrawn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
GB9622413A
Other versions
GB9622413D0 (en
Inventor
David Edward Williams
Ruth Ridley
Eliot Sizeland
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
Priority claimed from GB9408542A external-priority patent/GB9408542D0/en
Application filed by Capteur Sensors and Analysers Ltd filed Critical Capteur Sensors and Analysers Ltd
Priority to GB9622413A priority Critical patent/GB2303924A/en
Publication of GB9622413D0 publication Critical patent/GB9622413D0/en
Publication of GB2303924A publication Critical patent/GB2303924A/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Withdrawn legal-status Critical Current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

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)

Abstract

A resistive gas sensor has a porous semiconducting oxide in which the pore surfaces are decorated with a precious metal. The sensor operates at ambient temperatures for detection and measurement of target gases, especially carbon monoxide. For this purpose, parameters of the oxide and of the metallic phase are defined. The sensors operate best in the dark, and may be connected in an oscillator circuit so that the output signals representing gas concentration are frequency signals.
GB9622413A 1994-04-29 1995-05-01 Resistive gas sensing Withdrawn GB2303924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9622413A GB2303924A (en) 1994-04-29 1995-05-01 Resistive gas sensing

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9408542A GB9408542D0 (en) 1994-04-29 1994-04-29 Gas sensing resistors
GB9622413A GB2303924A (en) 1994-04-29 1995-05-01 Resistive gas sensing
PCT/GB1995/000986 WO1995030143A1 (en) 1994-04-29 1995-05-01 Resistive gas sensing

Publications (2)

Publication Number Publication Date
GB9622413D0 GB9622413D0 (en) 1997-01-08
GB2303924A true GB2303924A (en) 1997-03-05

Family

ID=26304796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9622413A Withdrawn GB2303924A (en) 1994-04-29 1995-05-01 Resistive gas sensing

Country Status (1)

Country Link
GB (1) GB2303924A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826515A1 (en) * 1977-06-22 1979-01-11 Rosemount Eng Co Ltd SOLID SENSOR ELEMENT
EP0313390A2 (en) * 1987-10-22 1989-04-26 Kabushiki Kaisha Toshiba Gas sensor and method for production thereof
EP0375013A2 (en) * 1988-12-23 1990-06-27 ENIRICERCHE S.p.A. Solid-state sensor for determining hydrogen and/or NOx concentration, and the method for its preparation
EP0488503A2 (en) * 1990-11-30 1992-06-03 New Cosmos Electric Co., Ltd. Gas sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826515A1 (en) * 1977-06-22 1979-01-11 Rosemount Eng Co Ltd SOLID SENSOR ELEMENT
EP0313390A2 (en) * 1987-10-22 1989-04-26 Kabushiki Kaisha Toshiba Gas sensor and method for production thereof
EP0375013A2 (en) * 1988-12-23 1990-06-27 ENIRICERCHE S.p.A. Solid-state sensor for determining hydrogen and/or NOx concentration, and the method for its preparation
EP0488503A2 (en) * 1990-11-30 1992-06-03 New Cosmos Electric Co., Ltd. Gas sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SENSORS & ACTUATORS VOL.7 MCH 1992 PP.721-726 G.SBERVEGLIERIA NOVEL PVD TECHNIQUE FOR PREPARATION... *

Also Published As

Publication number Publication date
GB9622413D0 (en) 1997-01-08

Similar Documents

Publication Publication Date Title
TW241337B (en)
JPS5779443A (en) Electrochemical sensor for detecting reducing gas, especially carbon monoxide, hydrazine and hydrogen in air
MY119265A (en) Carbon monoxide gas sensor
DE69023129T2 (en) ERROR DETECTION IN ELECTROCHEMICAL GAS SENSOR DEVICES.
WO2002044702A3 (en) Adsorption based carbon monoxide sensor and method
TWI268450B (en) Improvements in or relating to capacitance sensors
EP0874236A3 (en) Apparatus and sensor for sensing low concentration NOx
EP1293769A3 (en) Flammable gas sensor and gas concentration measurement method and apparatus
DE19780356D2 (en) Method for the detection of oxidizable and / or reducible gases in the air and device therefor
EP1324035A3 (en) Gas sensor with a strengthened air-permeable filter
ES8505112A1 (en) Carbon monoxide sensing element and process for manufacturing it.
US5608219A (en) Device for detecting gas by infrared absorption
GB2303924A (en) Resistive gas sensing
GB9906459D0 (en) Method for detecting an element resistance of a gas concentration sensor and gas concentration detection apparatus
WO2001094925A8 (en) Gas detection sensor
AU6473896A (en) Method and device for the expansion of sensor selectivity
EP1314977A4 (en) Method of detecting gas with the use of photocurrent amplification and the like and gas sensor
WO2004025261A3 (en) Method and apparatus detecting and analyzing oil and gas compositions using dual sensors
ES2106523T3 (en) METHANE SENSOR.
JP2517228B2 (en) Gas detector
JPS5690256A (en) Oxygen density detector for exhaust gas of automobile
WO1999001779A3 (en) Magnetic flux sensor with annular probe
JPS52129592A (en) Temperature sensor contacting type gas detecting element and preparation method of the element
WO2004097373A3 (en) Thermoelectric biosensor for analytes in a gas
JPS56162041A (en) Oxygen sensor

Legal Events

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