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：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：GB2397653A

公开(公告)日：2004-07-28

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: G01N27/22 ,  G01N27/414 ,  G01N33/28 ,  G01N33/00 ,  G01N27/00

Abstract: A multi-gas sensor device (10) for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment comprises a semiconductor substrate (12, 14) one or more catalytic metal gate-electrodes (16) deposited on the surface of the semiconductor substrate operable for sensing various gases, and an ohmic contact (22) deposited on the surface of the 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, comprises providing a sensor device (10) immersed 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. The device (10) may have a passivation layer for increasing the selectivity to different gases and a heating element.

公开(公告)号：CA2452891A1

公开(公告)日：2004-06-13

申请号：CA2452891

申请日：2003-12-11

Applicant: GEN ELECTRIC

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

IPC: G01N27/22 ,  G01N27/414 ,  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.