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公开(公告)号：US20070241917A1
公开(公告)日：2007-10-18
申请号：US11737913
申请日：2007-04-20
申请人： John Tiwet , Cary Stone , Richard Gorny , John Chapples , Ian Robins
发明人： John Tiwet , Cary Stone , Richard Gorny , John Chapples , Ian Robins
CPC分类号： G01N33/0063
摘要： A method and apparatus for gas detection uses a sensor such as an electrochemical (EC) cell and includes a feedback control loop to control a pump to establish a first predetermined gas flow rate to the EC cell. The concentration of the gas at the first predetermined flow rate is measured. If the detected concentration exceeds a predetermined Alert value at the first flow rate an Initial Warning without remedial action is generated, and, the system then changes the gas flow rate before an Alarm is indicated. An Alarm is signaled only if the system verifies the first measurement. Preferably the first flow rate is set to optimize the measurement accuracy of the EC cell being used, and the second flow rate is lower than the first. Verification of an Alarm at the first flow rate may be conducted quickly by a quick-reaction process. The controller may periodically cycle the flow rates between the first and second rates for better accuracy and faster verification times.
摘要翻译： 用于气体检测的方法和装置使用诸如电化学（EC）电池的传感器，并且包括反馈控制回路以控制泵以建立到EC电池的第一预定气体流量。 测量在第一预定流速下的气体浓度。 如果检测到的浓度超过第一流量的预定警报值，则产生没有补救措施的初始警告，然后系统在指示警报之前改变气体流量。 仅当系统验证第一次测量时，才会发出报警信号。 优选地，设定第一流量以优化所使用的EC电池的测量精度，并且第二流量低于第一流量。 可以通过快速反应过程快速地进行第一流量的报警的验证。 控制器可以周期性地循环第一和第二速率之间的流量，以获得更好的准确度和更快的验证时间。
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公开(公告)号：US20050183491A1
公开(公告)日：2005-08-25
申请号：US11029145
申请日：2005-01-04
申请人： John Tiwet , Cary Stone , Richard Gorny , John Chapples , Ian Robins
发明人： John Tiwet , Cary Stone , Richard Gorny , John Chapples , Ian Robins
CPC分类号： G01N33/0063
摘要： A method and apparatus for gas detection uses a sensor such as an electrochemical (EC) cell and includes a feedback control loop to control a pump to establish a first predetermined gas flow rate to the EC cell. The concentration of the gas at the first predetermined flow rate is measured. If the detected concentration exceeds a predetermined Alert value at the first flow rate an Initial Warning without remedial action is generated, and, the system then changes the gas flow rate before an Alarm is indicated. An Alarm is signaled only if the system verifies the first measurement. Preferably the first flow rate is set to optimize the measurement accuracy of the EC cell being used, and the second flow rate is lower than the first. Verification of an Alarm at the first flow rate may be conducted quickly by a quick-reaction process. The controller may periodically cycle the flow rates between the first and second rates for better accuracy and faster verification times.
摘要翻译： 用于气体检测的方法和装置使用诸如电化学（EC）电池的传感器，并且包括反馈控制回路以控制泵以建立到EC电池的第一预定气体流速。 测量在第一预定流速下的气体浓度。 如果检测到的浓度超过第一流量的预定警报值，则产生没有补救措施的初始警告，然后系统在指示警报之前改变气体流量。 仅当系统验证第一次测量时，才会发出报警信号。 优选地，设定第一流量以优化所使用的EC电池的测量精度，并且第二流量低于第一流量。 可以通过快速反应过程快速地进行第一流量的报警的验证。 控制器可以周期性地循环第一和第二速率之间的流量，以获得更好的准确度和更快的验证时间。
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公开(公告)号：US07224285B2
公开(公告)日：2007-05-29
申请号：US11029145
申请日：2005-01-04
申请人： John A. Tiwet , Cary S. Stone , Richard A. Gorny , John Chapples , Ian Robins
发明人： John A. Tiwet , Cary S. Stone , Richard A. Gorny , John Chapples , Ian Robins
IPC分类号： G08B17/10
CPC分类号： G01N33/0063
摘要： A method and apparatus for gas detection uses a sensor such as an electrochemical (EC) cell and includes a feedback control loop to control a pump to establish a first predetermined gas flow rate to the EC cell. The concentration of the gas at the first predetermined flow rate is measured. If the detected concentration exceeds a predetermined Alert value at the first flow rate an Initial Warning without remedial action is generated, and, the system then changes the gas flow rate before an Alarm is indicated. An Alarm is signaled only if the system verifies the first measurement. Preferably the first flow rate is set to optimize the measurement accuracy of the EC cell being used, and the second flow rate is lower than the first. Verification of an Alarm at the first flow rate may be conducted quickly by a quick-reaction process. The controller may periodically cycle the flow rates between the first and second rates for better accuracy and faster verification times.
摘要翻译： 用于气体检测的方法和装置使用诸如电化学（EC）电池的传感器，并且包括反馈控制回路以控制泵以建立到EC电池的第一预定气体流量。 测量在第一预定流速下的气体浓度。 如果检测到的浓度超过第一流量的预定警报值，则产生没有补救措施的初始警告，然后系统在指示警报之前改变气体流量。 仅当系统验证第一次测量时，才会发出报警信号。 优选地，设定第一流量以优化所使用的EC电池的测量精度，并且第二流量低于第一流量。 可以通过快速反应过程快速地进行第一流量的报警的验证。 控制器可以周期性地循环第一和第二速率之间的流量，以获得更好的准确度和更快的验证时间。
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公开(公告)号：US07504959B2
公开(公告)日：2009-03-17
申请号：US11737913
申请日：2007-04-20
申请人： John A. Tiwet , Cary S. Stone , Richard A. Gorny , John Chapples , Ian Robins
发明人： John A. Tiwet , Cary S. Stone , Richard A. Gorny , John Chapples , Ian Robins
IPC分类号： G08B17/10
CPC分类号： G01N33/0063
摘要： A method and apparatus for gas detection uses a sensor such as an electrochemical (EC) cell and includes a feedback control loop to control a pump to establish a first predetermined gas flow rate to the EC cell. The concentration of the gas at the first predetermined flow rate is measured. If the detected concentration exceeds a predetermined Alert value at the first flow rate an Initial Warning without remedial action is generated, and, the system then changes the gas flow rate before an Alarm is indicated. An Alarm is signaled only if the system verifies the first measurement. Preferably the first flow rate is set to optimize the measurement accuracy of the EC cell being used, and the second flow rate is lower than the first. Verification of an Alarm at the first flow rate may be conducted quickly by a quick-reaction process. The controller may periodically cycle the flow rates between the first and second rates for better accuracy and faster verification times.
摘要翻译： 用于气体检测的方法和装置使用诸如电化学（EC）电池的传感器，并且包括反馈控制回路以控制泵以建立到EC电池的第一预定气体流量。 测量在第一预定流速下的气体浓度。 如果检测到的浓度超过第一流量的预定警报值，则产生没有补救措施的初始警告，然后系统在指示警报之前改变气体流量。 仅当系统验证第一次测量时，才会发出报警信号。 优选地，设定第一流量以优化所使用的EC电池的测量精度，并且第二流量低于第一流量。 可以通过快速反应过程快速地进行第一流量的报警的验证。 控制器可以周期性地循环第一和第二速率之间的流量，以获得更好的准确度和更快的验证时间。
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公开(公告)号：US08741120B2
公开(公告)日：2014-06-03
申请号：US11872392
申请日：2007-10-15
申请人： John Chapples , Martin Willett
发明人： John Chapples , Martin Willett
IPC分类号： G01N27/407 , G01N27/406
CPC分类号： G01N27/406 , G01N27/4067 , G01N33/0011
摘要： Devices and methods are disclosed that can adjust a hydration level in an electrochemical sensor or an instrument which includes such a sensor. The device can include a chamber which can, at least in part, surround an inflow port of the sensor. An adjacent reservoir of water can provide a source of water vapor which can be infused into the sensor.
摘要翻译： 公开了可以调节电化学传感器或包括这种传感器的仪器中的水化水平的装置和方法。 该装置可以包括可以至少部分地围绕传感器的流入端口的室。 相邻的水库可以提供可以输入到传感器中的水蒸汽源。
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公开(公告)号：US20120285828A1
公开(公告)日：2012-11-15
申请号：US13529568
申请日：2012-06-21
IPC分类号： G01N27/403
CPC分类号： G01N27/404
摘要： An electrochemical oxygen sensor includes a micro-porous plastic membrane supported on a sealing disk and located between a gas inflow port and the sensor's electrolyte. The membrane and disk minimize thermal shock effects due to using the sensor at a first location, at a first temperature, and then moving it to a second location at a different temperature.
摘要翻译： 电化学氧传感器包括支撑在密封盘上并位于气体流入端口和传感器电解质之间的微孔塑料膜。 膜和盘片使得在第一温度下使用传感器的热冲击效应最小化，然后将其移动到不同温度的第二位置。
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公开(公告)号：US07282168B2
公开(公告)日：2007-10-16
申请号：US10258560
申请日：2001-04-26
IPC分类号： G01N27/404
CPC分类号： G01N33/0009 , G01N27/404 , Y10T29/49002
摘要： A gas sensor assembly comprises a housing (65) including a bore (61). A pin (50) extends through the bore (61) and an O-ring (100) is located in the bore. The O-ring (100) contacts the pin (50) and parts of the bore (61) so as to be restrained against movement in both lateral and axial directions. Two- and three-shot molding processes are described for fabricating the assembly.
摘要翻译： 气体传感器组件包括包括孔（61）的壳体（65）。 销（50）延伸穿过孔（61）并且O形环（100）位于孔中。 O形环（100）接触销（50）和孔（61）的一部分，以便在横向和轴向两个方向上被限制。 描述了用于制造组件的两次和三次成型工艺。
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公开(公告)号：US5360529A
公开(公告)日：1994-11-01
申请号：US39351
申请日：1993-04-21
CPC分类号： G01N27/301
摘要： A half-cell reference electrode comprises an electrode member in electrochemical contact with at least one gelled electrolyte solution which itself is contactable with the liquid to be tested wherein the gelling agent comprises a polymer containing acrylamide units substituted with a group or groups which lower the polymer's tendency to hydrolyse compared to polyacrylamide while providing a polymer that can form a gelled solution in 2.6M sodium/potassium nitrate solution (2.21M potassium nitrate and 0.39M sodium nitrate) comprising at least 75% (w/w) sodium/potassium nitrate solution.
摘要翻译： PCT No.PCT / EP92 / 01884第 371日期：1993年04月21日 102（e）日期1993年4月21日PCT提交1992年8月19日PCT公布。 公开号WO93 / 04360 日期为1993年3月4日。半电池参考电极包括电化学接触的电极部件，其与至少一种凝胶电解质溶液接触，该电解质本身可与待测液体接触，其中胶凝剂包含含有被 降低聚合物与聚丙烯酰胺相比水解趋势的基团或基团，同时提供可以在包含至少75％（w / w）的2.6M硝酸钠/硝酸钾溶液（2.21M硝酸钾和0.39M硝酸钠）中形成凝胶溶液的聚合物， w）钠/硝酸钾溶液。
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公开(公告)号：US08845871B2
公开(公告)日：2014-09-30
申请号：US13529568
申请日：2012-06-21
IPC分类号： G01N27/413 , G01N27/404
CPC分类号： G01N27/404
摘要： An electrochemical oxygen sensor includes a micro-porous plastic membrane supported on a sealing disk and located between a gas inflow port and the sensor's electrolyte. The membrane and disk minimize thermal shock effects due to using the sensor at a first location, at a first temperature, and then moving it to a second location at a different temperature.
摘要翻译： 电化学氧传感器包括支撑在密封盘上并位于气体流入端口和传感器电解质之间的微孔塑料膜。 膜和盘片使得在第一温度下使用传感器的热冲击效应最小化，然后将其移动到不同温度的第二位置。
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公开(公告)号：US20080202929A1
公开(公告)日：2008-08-28
申请号：US11877331
申请日：2007-10-23
IPC分类号： G01N27/407
CPC分类号： G01N27/404
摘要： An electrochemical oxygen sensor includes a micro-porous plastic membrane supported on a sealing disk and located between a gas inflow port and the sensor's electrolyte. The membrane and disk minimize thermal shock effects due to using the sensor at a first location, at a first temperature, and then moving it to a second location at a different temperature.
摘要翻译： 电化学氧传感器包括支撑在密封盘上并位于气体流入端口和传感器电解质之间的微孔塑料膜。 膜和盘片使得在第一温度下使用传感器的热冲击效应最小化，然后将其移动到不同温度的第二位置。
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