公开(公告)号：US11609220B2

公开(公告)日：2023-03-21

申请号：US17249481

申请日：2021-03-03

Applicant: Honeywell International Inc.

Inventor： Alfredo Flores Gutierrez ,  Keith Francis Edwin Pratt ,  Lamar Floyd Ricks

IPC: G01N33/00 ,  G01L19/00

Abstract: A sensor assembly for monitoring gas concentration and a method of the same are provided. The sensor assembly includes a start-up sensor and a long-run sensor. The start-up sensor is characterized by a first power-on period and the long-run sensor is characterized by a second power-on period that is longer than the first power-on period. The sensor assembly also includes a controller in communication with the start-up sensor and the long-run sensor. The controller is configured to cause the start-up sensor and the long-run sensor to power on. The controller is further configured to power off the start-up sensor and monitor the gas concentration via the long-run sensor upon the expiration of the second power-on period. A corresponding method of monitoring gas concentration is also provided.

公开(公告)号：US09689827B2

公开(公告)日：2017-06-27

申请号：US14049426

申请日：2013-10-09

Applicant: Honeywell International Inc.

Inventor： Keith Francis Edwin Pratt ,  Martin Willett ,  Lei Xiao ,  Ali Hosseinmardi

IPC: G01N27/28 ,  G01N27/404 ,  G01N27/49

CPC classification number: G01N27/28 ,  G01N27/404 ,  G01N27/49

Abstract: An electrochemical detector can be powered partly, or entirely by voltages generated by the sensor. Using either active circuits or a passive component which produces a predetermined voltage drop in the respective sensor, two electrode consumable anode oxygen sensors can be provided which do not evolve hydrogen during operation.

公开(公告)号：US11598745B2

公开(公告)日：2023-03-07

申请号：US16717506

申请日：2019-12-17

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Johnny Jian ,  Neils Hansen ,  Keith Francis Edwin Pratt ,  Paul Westmarland ,  Fuxia Liu

IPC: G01N27/404 ,  G01N27/40 ,  G01N27/413 ,  G01N27/407

Abstract: Various example embodiments described herein relate to an electrochemical gas sensor. The electrochemical gas sensor can include a sensor cap having one or more solid features disposed on a surface of the sensor cap. The electrochemical gas sensor can include a counter electrode configured to generate a gas during use of the electrochemical gas sensor. The electrochemical gas sensor can include a vent assembly adapted to release at least a portion of the gas generated at the counter electrode out from the electrochemical gas sensor. The vent assembly can include a vent conduit and a vent membrane that defines a passage for the gas to flow from an extended portion of the counter electrode, to the vent conduit, via the vent membrane, so as to be vented from the electrochemical gas sensor.

公开(公告)号：US11307167B2

公开(公告)日：2022-04-19

申请号：US16817999

申请日：2020-03-13

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Keith Francis Edwin Pratt

IPC: G01N27/26 ,  G01N27/416 ,  G01N27/413

Abstract: Example systems, apparatuses and methods are disclosed for measuring electrolyte content in an electrochemical gas sensor. An example system may comprise a separator material, a first electrode configured to be disposed on a first separator material surface, and a second electrode configured to be disposed on a second separator material surface. The example system may further comprise a wick material comprising a first wick material surface and a second wick material surface opposite the first wick material surface, a third electrode configured to be disposed facing the first wick material surface, and a fourth electrode configured to be disposed on the second wick material surface. The fourth electrode may be configured to measure an electrical conductivity through the wick material.

公开(公告)号：US10962517B1

公开(公告)日：2021-03-30

申请号：US16787704

申请日：2020-02-11

Applicant: Honeywell International Inc.

Inventor： Alfredo Flores Gutierrez ,  Keith Francis Edwin Pratt ,  Lamar Floyd Ricks

IPC: G01N33/00 ,  G01L19/00

Abstract: A sensor assembly for monitoring gas concentration and a method of the same are provided. The sensor assembly includes a start-up sensor and a long-run sensor. The start-up sensor is characterized by a first power-on period and the long-run sensor is characterized by a second power-on period that is longer than the first power-on period. The sensor assembly also includes a controller in communication with the start-up sensor and the long-run sensor. The controller is configured to cause the start-up sensor and the long-run sensor to power on. The controller is further configured to power off the start-up sensor and monitor the gas concentration via the long-run sensor upon the expiration of the second power-on period. A corresponding method of monitoring gas concentration is also provided.

公开(公告)号：US20180149615A1

公开(公告)日：2018-05-31

申请号：US15877232

申请日：2018-01-22

Applicant: Honeywell International Inc.

Inventor： Alan Daniel Spong ,  Neils Hansen ,  Keith Francis Edwin Pratt ,  John Chapples ,  Martin Geoffrey Jones

IPC: G01N27/404 ,  H01M2/04

CPC classification number: G01N27/4072 ,  G01N27/404 ,  G01N27/4045 ,  G01N27/406 ,  G01N27/413 ,  G01N33/0009 ,  H01M2/04 ,  H01M4/02

Abstract: Embodiments of the disclosure include an electrochemical sensor comprising a housing defining an interior space; a sensing electrode; a counter electrode; and an electrical contact; wherein at least one of the sensing electrode or the counter electrode comprises a contact portion, wherein the contact portion is biased into contact with and electrically coupled to the electrical contact, and wherein a compression on the contact portion is different from a compression on the remaining body of the electrode.

公开(公告)号：US11994490B2

公开(公告)日：2024-05-28

申请号：US18165712

申请日：2023-02-07

Applicant: Honeywell International Inc.

Inventor： Johnny Jian ,  Neils Hansen ,  Keith Francis Edwin Pratt ,  Paul Westmarland ,  Fuxia Liu

IPC: G01N27/404 ,  G01N27/40 ,  G01N27/413 ,  G01N27/407

CPC classification number: G01N27/404 ,  G01N27/40 ,  G01N27/413 ,  G01N27/4078

Abstract: Various example embodiments described herein relate to an electrochemical gas sensor. The electrochemical gas sensor can include a sensor cap having one or more solid features disposed on a surface of the sensor cap. The electrochemical gas sensor can include a counter electrode configured to generate a gas during use of the electrochemical gas sensor. The electrochemical gas sensor can include a vent assembly adapted to release at least a portion of the gas generated at the counter electrode out from the electrochemical gas sensor. The vent assembly can include a vent conduit and a vent membrane that defines a passage for the gas to flow from an extended portion of the counter electrode, to the vent conduit, via the vent membrane, so as to be vented from the electrochemical gas sensor.

公开(公告)号：US11686714B2

公开(公告)日：2023-06-27

申请号：US17128379

申请日：2020-12-21

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Keith Francis Edwin Pratt

IPC: G01N33/00 ,  G01N27/407 ,  G01N27/31

CPC classification number: G01N33/007 ,  G01N27/31 ,  G01N27/4078 ,  G01N33/0062 ,  G01N33/004 ,  G01N2033/0068 ,  G01N2033/0072

Abstract: Provided is a gas sensor and methods of monitoring the same. The gas sensor may detect gas restrictions within the gas sensor. The gas sensor may include a test gas diffusion path allowing for monitoring of restrictions within the gas sensor. A pulse of test gas may be electrochemically generated into a void disposed between the membrane and capillary of the gas sensor. The resulting transient signal on the sensing electrode may be analyzed to determine the degree of restriction present in the gas sensor.

公开(公告)号：US10895562B2

公开(公告)日：2021-01-19

申请号：US16160785

申请日：2018-10-15

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Keith Francis Edwin Pratt ,  Tom Gurd ,  Cristian Vasile Diaconu ,  Martin Geoffrey Jones

IPC: G01N33/00 ,  G01N27/27

Abstract: A method and apparatus are provided to determine the composition of one or more gases. In the context of a method, a sensory assembly and at least one processor, the sensor assembly comprising a first gas sensor and a second gas sensor, includes causing the first sensor to be powered to detect a presence of one or more gas while the second sensor is unpowered. The method further includes detecting the presence of one or more gases while the second sensor is unpowered. In response to detecting the presence of the one or more gases, the method includes causing the second sensor to be powered. The method still further includes capturing sensor data corresponding to at least one of the one or more gases. The method also includes identifying the at least one of the one or more gases based on an analysis of the sensor data.

公开(公告)号：US11549906B2

公开(公告)日：2023-01-10

申请号：US16711523

申请日：2019-12-12

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Keith Francis Edwin Pratt ,  Guoliang Li ,  Jia Wu ,  Fuyin Liu ,  Ian Underhay ,  Arek Majczak

IPC: G01N27/404 ,  G01N27/30 ,  G01N33/00 ,  G01N27/406

Abstract: Various embodiments disclose an electronic circuit for an electrochemical gas sensor. The electronic circuit comprises a first switching element electrically coupled to a reference terminal of the electrochemical gas sensor and a ground voltage terminal. Further, the electronic circuit comprises a second switching element electrically coupled to a sensing terminal of the electrochemical gas sensor and the ground voltage terminal. In an instance in which the electrochemical gas sensor is powered OFF, the first switching element and the second switching element are configured to electrically couple the reference terminal and the sensing terminal to the ground voltage terminal such that current generated when the sensing electrode and the target gas react while the electrochemical gas sensor is powered OFF flows to the ground voltage terminal and the potential of the reference terminal and the sensing terminal remain the equal.