公开(公告)号：JP2002350396A

公开(公告)日：2002-12-04

申请号：JP2002062805

申请日：2002-03-08

Applicant: GEN ELECTRIC CANADA

Inventor： BABES-DORNEA ELENA ,  BEAUCHEMIN CLAUDE ,  QIN RENYAN

IPC: G01N27/416 ,  G01N27/49 ,  G01N33/00 ,  H01M8/04

Abstract: PROBLEM TO BE SOLVED: To provide a method for modeling a sensor that measures hydrogen content and partial pressure of the hydrogen in a gas flow based on the characteristic of the sensor. SOLUTION: The micro-fuel cell sensor 10 includes a detecting element having a first and a second gas diffusing electrodes 4-1, 4-2 that are arranged so as to be spaced from each other in such a condition that acid electrolyte is disposed therein. A first gas permeable film 14 separates the first electrode from the external gas flow. A second gas permeable film 12 separates the second electrode from the atmosphere. When the hydrogen from the gas flow diffuses through the first film and reacts to the first electrode, electrochemical charging occurs on the first electrode, whereas the potential of the second electrode is invariable. It is recognized that the potential difference, which is measured as the current, between the first and the second electrodes represents an output of the sensor. The modeling of the response time of the sensor is carried out based on the characteristic affecting the response time of the sensor.

公开(公告)号：CA2452891C

公开(公告)日：2010-07-13

申请号：CA2452891

申请日：2003-12-11

Applicant: GEN ELECTRIC

Inventor： STOKES EDWARD B ,  SANDVIK PETER M ,  TILAK VINAYAK ,  FEDISON JEFFREY B ,  BABES-DORNEA ELENA ,  QIN RENYAN ,  ROSE JAMES W ,  WEAVER STANTON E

IPC: G01N27/414 ,  G01N27/22 ,  G01N33/28

Abstract: A multi-gas sensor device (10) for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment. The device (10) comprising a semiconductor substrate (14), one or more catalytic metal gate-electrodes (16) deposited on the surface of the semiconductor substrate (14) operable for sensing various gases, and an ohmic contact (22) deposited on the surface of the semiconductor substrate (14). The semiconductor substrate (14) comprises one of GaN, SiC, AlN, InN, AlGaN, InGaN and AlInGaN. A method for sensing gas in an oil-filled reservoir of electrical equipment, comprising providing a sensor device (10), immersing the sensor device (10) in the oil-filled reservoir, allowing the gases emitted from the oil to interact with the one or more catalytic metal gate-electrodes (16), altering the gas as it contacts the catalytic metal gate-electrodes (16) and altering the sensitivity of the sensor.

公开(公告)号：GB2417561B

公开(公告)日：2008-12-10

申请号：GB0515222

申请日：2005-07-25

Applicant: GEN ELECTRIC

Inventor： BABES-DORNEA ELENA ,  GRINCOURT YVES ,  BEAUCHEMIN CLAUDE

IPC: G01N33/28 ,  G01N27/407 ,  H01M8/04

公开(公告)号：CA2373870A1

公开(公告)日：2002-09-08

申请号：CA2373870

申请日：2002-02-28

Applicant: GEN ELECTRIC CANADA

Inventor： BEAUCHEMIN CLAUDE ,  BABES-DORNEA ELENA ,  QIN RENYAN

IPC: G01N27/416 ,  G01N27/49 ,  G01N33/00 ,  H01M8/04 ,  G01N7/00 ,  G01N7/10 ,  G01N27/04

Abstract: An apparatus for measuring hydrogen content and partial hydrogen pressure in gas streams and a method of modeling the sensor based on the characteristics of the sensor. The apparatus includes a housing 20 with micro-fuel cell sensor 10 disposed therein. The sensor includes a sensing element having first and second gas diffusing electrodes 4-1, 4-2 spaced from one another with an acidic electrolyte disposed between the electrodes. A first gas permeable membrane 14 separates the firs t electrode from an external gas stream. A second gas permeable membrane 12 separates the second electrode from atmospheric air. Electrochemical chargin g of the first electrode occurs when hydrogen from a gas stream diffuses through the first membrane to react with the first electrode, while the potential of the secon d electrode remains unchanged. The potential difference between the first and second electrodes measured as current is identified to represent the sensor output. The respon se time of the sensor is modeled based on the characteristics of the sensor affecting t he sensor response time.

公开(公告)号：CA2647799A1

公开(公告)日：2009-07-02

申请号：CA2647799

申请日：2008-12-23

Applicant: GEN ELECTRIC

Inventor： BABES-DORNEA ELENA ,  GRINCOURT YVES

IPC: G01N27/416 ,  G01N27/30 ,  G01N27/40 ,  H01M8/04

Abstract: A fuel cell sensor (100) is provided for detecting the presence of acetylen e and hydrogen in a fluid. The sensor includes a sensing element (4-1) having first and second gas diffusing electrodes spaced from one another. The first gas diffusing electrode can be used for sensing acetylene. The second gas diffusing electrode can be used for sensing hydrogen. A fuel cell spacer (15) having an acidic electrolyte is disposed between the sensing element and a common electrode (4-2). The sensi ng element can be configured to have a specific ratio of the area between the first gas diffusing electrode in relation to the area of the second gas diffusing electrode.

公开(公告)号：CA2373870C

公开(公告)日：2009-02-17

申请号：CA2373870

申请日：2002-02-28

Applicant: GEN ELECTRIC CANADA

Inventor： BEAUCHEMIN CLAUDE ,  QIN RENYAN ,  BABES-DORNEA ELENA

IPC: G01N27/416 ,  G01N27/404 ,  G01N27/49 ,  G01N33/00 ,  H01M8/04

Abstract: An apparatus for measuring hydrogen content and partial hydrogen pressure in gas streams and a method of modeling the sensor based on the characteristics of the sensor. The apparatus includes a housing 20 with micro-fuel cell sensor 10 disposed therein. The sensor includes a sensing element having first and second gas diffusing electrodes 4-1, 4-2 spaced from one another with an acidic electrolyte disposed between the electrodes. A first gas permeable membrane 14 separates the firs t electrode from an external gas stream. A second gas permeable membrane 12 separates the second electrode from atmospheric air. Electrochemical chargin g of the first electrode occurs when hydrogen from a gas stream diffuses through the first membrane to react with the first electrode, while the potential of the secon d electrode remains unchanged. The potential difference between the first and second electrodes measured as current is identified to represent the sensor output. The respon se time of the sensor is modeled based on the characteristics of the sensor affecting t he sensor response time.

公开(公告)号：GB2397653B

公开(公告)日：2006-12-06

申请号：GB0328876

申请日：2003-12-12

Applicant: GEN ELECTRIC

Inventor： STOKES EDWARD B ,  SANDVIK PETER M ,  TILAK VINAYAK ,  FEDISON JEFFREY B ,  BABES-DORNEA ELENA ,  QIN RENYAN ,  ROSE JAMES W ,  WEAVER STANTON E

IPC: G01N27/414 ,  G01N27/22 ,  G01N33/28

Abstract: A multi-gas sensor device for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment. The device comprising a semiconductor substrate, one or more catalytic metal gate-electrodes deposited on the surface of the semiconductor substrate operable for sensing various gases, and an ohmic contact deposited on the surface of the semiconductor substrate. The semiconductor substrate comprises one of GaN, SiC, AlN, InN, AlGaN, InGaN and AlInGaN. A method for sensing gas in an oil-filled reservoir of electrical equipment, comprising providing a sensor device, immersing the sensor device in the oil-filled reservoir, allowing the gases emitted from the oil to interact with the one or more catalytic metal gate-electrodes, altering the gas as it contacts the catalytic metal gate-electrodes and altering the sensitivity of the sensor.

公开(公告)号：CA2515170A1

公开(公告)日：2006-02-16

申请号：CA2515170

申请日：2005-08-04

Applicant: GEN ELECTRIC

Inventor： BEAUCHEMIN CLAUDE ,  GRINCOURT YVES ,  BABES-DORNEA ELENA

IPC: G01N27/416 ,  G01N27/407 ,  G01N33/28 ,  H01F27/00 ,  H01M8/04

Abstract: A micro fuel cell sensor having laminated gas permeable membrane. The sens or comprises a housing, first and second gas diffusing electrodes spaced from o ne another, a fuel-cell spacer having an acidic electrolyte disposed between sa id first and second electrodes, and two gas permeable membranes. The first gas permeable membrane comprises a polymer laminated on a metal substrate, wherein the substrate comprises pores that have dimensions at least less than one-half the thickne ss of the polymer film.

公开(公告)号：CA2515170C

公开(公告)日：2012-12-18

申请号：CA2515170

申请日：2005-08-04

Applicant: GEN ELECTRIC

Inventor： BABES-DORNEA ELENA ,  GRINCOURT YVES ,  BEAUCHEMIN CLAUDE

IPC: G01N27/416 ,  G01N27/407 ,  G01N33/28 ,  H01F27/00 ,  H01M8/04

Abstract: A micro fuel cell sensor having laminated gas permeable membrane. The sensor comprises a housing, first and second gas diffusing electrodes spaced from one another, a fuel-cell spacer having an acidic electrolyte disposed between said first and second electrodes, and two gas permeable membranes. The first gas permeable membrane comprises a polymer laminated on a metal substrate, wherein the substrate comprises pores that have dimensions at least less than one-half the thickness of the polymer film.

公开(公告)号：GB2417561A

公开(公告)日：2006-03-01

申请号：GB0515222

申请日：2005-07-25

Applicant: GEN ELECTRIC

Inventor： BABES-DORNEA ELENA ,  GRINCOURT YVES ,  BEAUCHEMIN CLAUDE

IPC: G01N27/26 ,  G01N27/40 ,  G01N27/407 ,  G01N33/28 ,  H01M8/04

Abstract: A micro fuel cell sensor (10) having a laminated gas permeable membrane comprises a housing (3), first and second gas diffusing electrodes (4-1, 4-2) spaced from one another, a fuel-cell spacer (5) having an acidic electrolyte disposed between said first and second electrodes (4-1, 4-2), and two gas permeable membranes (1, 7). The first gas permeable membrane (1) comprises a polymer laminated on a metal substrate, wherein the substrate comprises pores that have dimensions at least less than one-half the thickness of the polymer film. The first membrane may comprise a polymer laminated on a porous metal disk. The polymer may be polytetrafluroethylene (PTFE), perflurinated ethylene-propylene copolymer (FEP), perfluroalkoxy PTFE, polyvinylidene fluoride (PVDF), polyvinyl Chloride (PVC), polyimide, polyethylene (PE), polyether ester ketone (PEEK), polycarbonate (PC) or polyurethane. The gas detected may be, hydrogen, carbon monoxide, acetylene, methane or ethane. The electrodes may be identical and comprise at least one of platinum on carbon, gold, palladium, palladium-platinum, ruthenium, iridium, osmium, rhodium or tantalum.