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    • 3. 发明授权
    • Gas sensors
    • 气体传感器
    • US07279080B2
    • 2007-10-09
    • US10343162
    • 2001-07-27
    • John ChapplesMartin Geoffrey Jones
    • John ChapplesMartin Geoffrey Jones
    • G01N27/407
    • H01M8/1004G01N27/4074G01N33/004H01B1/122H01M6/183H01M8/0289H01M8/1023H01M8/1039H01M8/1051H01M2300/0082H01M2300/0091
    • This invention provides an assembly comprising a sensing electrode and a counter electrode in contact with a membrane body formed from a solid polymer electrolyte system comprising a fluorinated polymer matrix and a charge carrying component which is dispersed in the matrix the electrodes and membrane being housed in a housing having a gas diffusion barrier through which gas may flow. The charge carrying components are fluorinated organic proton conductors (such as heptadecafluorooctane sulphonic acid, bis-trifluoromethane sulphonamide, N-(2,6-diethylphenyl)-1,1,1-trifluoromethane sulphonamide, N-benzyltrifluoromethane sulphonamide and N, N-1,2-cyclohexanediylbis (1,1,1-trifluoromethane sulphonamide)). The polymer matrix is a homopolymer or copolymer of vinylidene fluoride preferably with fluorinated comonomers. The solid polymer electrolyte system preferably contains plasticising additive(s) and is cast as a coating onto one or more electrodes eg. Platinum gas diffusion electrodes forming an assembly for use in a gas sensor especially a CO sensor.
    • 本发明提供一种组件,其包括与由固体聚合物电解质体系形成的膜体接触的感测电极和对电极,所述固体聚合物电解质体系包含氟化聚合物基质和电荷携带组分,其分散在基质中,电极和膜被容纳在基质中 壳体具有气体可以流过的气体扩散阻挡层。 载电组分是氟化有机质子导体(如十七氟辛烷磺酸,双三氟甲磺酸,N-(2,6-二乙基苯基)-1,1,1-三氟甲磺酰胺,N-苄基三氟甲烷磺酰胺和N,N-1 ,2-环己二基双(1,1,1-三氟甲磺酰胺))。 聚合物基质是偏二氟乙烯与氟化共聚单体的均聚物或共聚物。 固体聚合物电解质体系优选含有增塑添加剂,并且作为涂层浇铸到一个或多个电极上,例如, 铂气扩散电极形成用于气体传感器,特别是CO传感器的组件。
    • 4. 发明申请
    • Gas monitor using electrochemical cell and method of operating
    • 气体监测仪采用电化学电池和操作方法
    • US20050183491A1
    • 2005-08-25
    • US11029145
    • 2005-01-04
    • John TiwetCary StoneRichard GornyJohn ChapplesIan Robins
    • John TiwetCary StoneRichard GornyJohn ChapplesIan Robins
    • G01N7/00G01N33/00
    • G01N33/0063
    • 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.
    • 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。