公开(公告)号：EP0990895A3

公开(公告)日：2002-05-29

申请号：EP99307596.9

申请日：1999-09-27

申请人： Atwood Industries Inc.

发明人： Shen, Yousheng ,  Consadori, Franco

IPC分类号： G01N27/12 ,  G01N27/407

CPC分类号： G01N27/4175 ,  G01N27/4045 ,  G01N33/004

摘要： A gas sensor for measuring carbon monoxide and other toxic gases comprises a first, sensing electrode and a second, counting electrode. Positioned between the first and second electrodes is an ion conducting, solid electrolyte membrane. In response to the presence of a toxic gas introduced to the first electrode, an electric signal is produced between the first electrode and the second electrode. The electric signal changes in response to changes in the concentration of the toxic gas. Detection circuitry measures the electric signal to determine the concentration of the toxic gas. An electrically conductive, hydrophobic top membrane electrically connects the first electrode to the detection circuitry while preventing liquid water from contacting the first electrode. An electrically conductive, hydrophobic bottom membrane electrically connects the second electrode to the detection circuitry. The top and bottom membranes, though hydrophobic, are preferably also microporous so as to be gas permeable, including permeable to water vapour. Preferably the top and bottom membranes are ion insulating as well. Optionally the sensor is provided with a water reservoir to maintain constant relative humidity at the ion conducting electrolyte membrane. The sensor may also have a heating element. Internal and external self-diagnostic features to ensure that the sensor is functioning normally are disclosed, as well as self-calibration features, so as to ensure sensor accuracy.

公开(公告)号：EP0990895A2

公开(公告)日：2000-04-05

申请号：EP99307596.9

申请日：1999-09-27

申请人： Atwood Industries Inc.

发明人： Shen, Yousheng ,  Consadori, Franco

IPC分类号： G01N27/12

CPC分类号： G01N27/4175 ,  G01N27/4045 ,  G01N33/004

摘要： A gas sensor for measuring carbon monoxide and other toxic gases comprises a first, sensing electrode and a second, counting electrode. Positioned between the first and second electrodes is an ion conducting, solid electrolyte membrane. In response to the presence of a toxic gas introduced to the first electrode, an electric signal is produced between the first electrode and the second electrode. The electric signal changes in response to changes in the concentration of the toxic gas. Detection circuitry measures the electric signal to determine the concentration of the toxic gas. An electrically conductive, hydrophobic top membrane electrically connects the first electrode to the detection circuitry while preventing liquid water from contacting the first electrode. An electrically conductive, hydrophobic bottom membrane electrically connects the second electrode to the detection circuitry. The top and bottom membranes, though hydrophobic, are preferably also microporous so as to be gas permeable, including permeable to water vapour. Preferably the top and bottom membranes are ion insulating as well. Optionally the sensor is provided with a water reservoir to maintain constant relative humidity at the ion conducting electrolyte membrane. The sensor may also have a heating element. Internal and external self-diagnostic features to ensure that the sensor is functioning normally are disclosed, as well as self-calibration features, so as to ensure sensor accuracy.

摘要翻译： 用于测量一氧化碳和其它有毒气体的气体传感器包括第一感测电极和第二计数电极。 位于第一和第二电极之间的是离子传导固体电解质膜。 响应于引入到第一电极的有毒气体的存在，在第一电极和第二电极之间产生电信号。 电信号随着有毒气体浓度的变化而变化。 检测电路测量电信号以确定有毒气体的浓度。 导电的疏水性顶膜将第一电极与检测电路电连接，同时防止液态水接触第一电极。 导电疏水底膜将第二电极与检测电路电连接。 顶部和底部膜虽然是疏水的，但是优选也是微孔的，以便是透气的，包括透水蒸气。 优选地，顶部和底部膜也是离子绝缘的。 可选地，传感器设置有储水器，以在离子传导电解质膜处保持恒定的相对湿度。 传感器也可以具有加热元件。 公开了内部和外部的自诊断功能，以确保传感器正常工作，以及自校准功能，以确保传感器的精度。

公开(公告)号：EP0762117A2

公开(公告)日：1997-03-12

申请号：EP96306317.7

申请日：1996-08-30

申请人： ATWOOD INDUSTRIES INC.

发明人： Shen, Yousheng ,  Field, George D. ,  Consadori, Franco

IPC分类号： G01N27/49

CPC分类号： G01N27/4045 ,  G01N33/004

摘要： A low cost room temperature electrochemical gas sensor with humidity compensation for sensing CO, alcohol vapors and other toxic analyte gases has a solid protonic conductive membrane with a low bulk ionic resistance. A sensing electrode and a count electrode, optionally a count electrode and a reference electrode, which are separated by the membrane, can be made of mixed protonic-electronic conductors, or can be made of a thin electrically conducting film such as platinum. A reservoir of water maintain the solid protonic conductive membrane at constant 100 percent relative humidity to compensate for ambient humidity changes. Embodiments of the inventive sensor also include an electrochemical analyte gas pump to transport the analyte gas away from the count electrode side of the sensor. Analyte gas pumps for the inventive sensor include dual pump electrodes situated on opposite sides of the membrane, and include a means for applying a DC power across the membrane to the sensing and count electrodes. Another embodiment of the inventive sensor has first and second solid protonic conductive membranes, one of which has a sensing electrode and a count electrode separated by the first membrane, and the other of which has dual pump electrodes situated on opposite sides of the second membrane.

摘要翻译： 与湿度补偿甲低成本室温电化学气体传感器，用于感测CO，醇蒸汽和其它有毒气体的分析物具有低体积离子电阻固体质子传导膜。 感测电极和计数电极，任选的计数电极和参考电极，其是由所述膜隔开的，可制成混合的质子 - 电子导体，或者可以由薄的导电片的：如铂。 水的储器保持在恒定的100％的相对湿度的固体质子传导膜以补偿环境湿度的变化。 所以本发明的传感器的实施例包括在电化学分析物气体泵输送分析物气体从所述传感器的计电极侧远离。 分析物对本发明的传感器的气体泵包括位于所述膜的相对侧的双泵电极，以及包括用于施加直流功率穿过膜到感测和计数电极的装置。 本发明的传感器的另一实施例具有第一和第二固体质子传导膜，其中一个具有一个感测电极，并通过所述第一膜分开的计数电极，而另一个具有位于第二膜的相对侧的双泵电极。

公开(公告)号：EP0752557A3

公开(公告)日：1999-02-10

申请号：EP96305002.6

申请日：1996-07-05

申请人： ATWOOD INDUSTRIES INC.

发明人： Consadori, Franco ,  Field, D. George ,  Banta, Kevin D. ,  Nichols, Gary Simeon

IPC分类号： F23N5/08 ,  F23N5/20

CPC分类号： F23N5/082 ,  F23N5/20 ,  F23N5/24 ,  F23N2025/16 ,  F23N2027/02 ,  F23N2027/40 ,  F23N2033/06

摘要： A gas fired appliance measures infrared emissions from a metal object heated in a combustion chamber to evaluate combustion. Associated circuitry uses the evaluation to control operational parameters of the appliance, including fuel and air fed to the appliance. A second metal object, prior to fuel ignition, is electrically heated to emit infrared radiation. Infrared emissions from the second metal object, indicative of the temperature thereof, are monitored to assure an ignition temperature to ignite a combustible air and fuel mixture. A fan directs a stream of ambient air upon the second metal object to cool the same and reduce the infrared emanating therefrom. The reduction in infrared from the second metal object is monitored to verify proper fan operation.

公开(公告)号：EP0752557A2

公开(公告)日：1997-01-08

申请号：EP96305002.6

申请日：1996-07-05

申请人： ATWOOD INDUSTRIES INC.

发明人： Consadori, Franco ,  Field, D. George ,  Banta, Kevin D. ,  Nichols, Gary Simeon

IPC分类号： F23N5/08 ,  F23N5/20

CPC分类号： F23N5/082 ,  F23N5/20 ,  F23N5/24 ,  F23N2025/16 ,  F23N2027/02 ,  F23N2027/40 ,  F23N2033/06

摘要： A gas fired appliance measures infrared emissions from a metal object heated in a combustion chamber to evaluate combustion. Associated circuitry uses the evaluation to control operational parameters of the appliance, including fuel and air fed to the appliance. A second metal object, prior to fuel ignition, is electrically heated to emit infrared radiation. Infrared emissions from the second metal object, indicative of the temperature thereof, are monitored to assure an ignition temperature to ignite a combustible air and fuel mixture. A fan directs a stream of ambient air upon the second metal object to cool the same and reduce the infrared emanating therefrom. The reduction in infrared from the second metal object is monitored to verify proper fan operation.

摘要翻译： 燃气发电设备测量在燃烧室中加热的金属物体的红外辐射以评估燃烧。 相关电路使用评估来控制设备的运行参数，包括供应给设备的燃料和空气。 燃料点火之前的第二金属物体被电加热以发射红外辐射。 监测来自第二金属物体的指示其温度的红外发射，以确保点火温度以点燃可燃空气和燃料混合物。 风扇将环境空气流引导到第二金属物体上以对其进行冷却，并减少从其发出的红外线。 监测来自第二金属物体的红外线的减少以验证正确的风扇操作。