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    • 6. 发明授权
    • Measuring sensor
    • 测量传感器
    • US07998327B2
    • 2011-08-16
    • US10540652
    • 2003-11-17
    • Jens SchneiderDetlef HeimannThomas WahlJames-Richard Waldrop, II
    • Jens SchneiderDetlef HeimannThomas WahlJames-Richard Waldrop, II
    • G01N27/409G01N27/26
    • G01N27/4077
    • A measuring sensor is described for determining a physical property of a measured gas, especially for determining the oxygen concentration or the pollutant concentration in the exhaust gas of internal combustion engines, which has a sensor element that is exposable to the measured gas which is at least partially coated with a protective layer that protects against harmful components in the measured gas. In order to achieve producing a “contamination protection”, that is cost-effective from a manufacturing technology point of view, particularly against silicon compounds and phosphorus compounds, the protective layer (26) is made of highly active γ- or δ-aluminum oxide (Al2O3) having additives of compounds of the alkaline metals group, the alkaline earths group, the IV B subgroup or the lanthanides group.
    • 描述了测量传感器,用于确定测量的气体的物理性质,特别是用于确定内燃机排气中的氧浓度或污染物浓度,其具有可暴露于测量气体的传感器元件,该传感器元件至少为 部分涂覆有保护层,防止测量气体中的有害成分。 为了实现生产“污染防护”,从制造技术的观点来看,特别是硅化合物和磷化合物是成本有效的,保护层(26)由高活性的γ-或δ-氧化铝 (Al 2 O 3),其具有碱金属基团,碱土金属组,IVB族或镧系元素族的化合物的添加剂。
    • 10. 发明授权
    • Gas sensor and method for detecting particles in a gas flow
    • 气体传感器和气体流中颗粒检测方法
    • US08163161B2
    • 2012-04-24
    • US12277952
    • 2008-11-25
    • Jens SchneiderDetlef HeimannGoetz ReinhardtHenrico RungeLothar DiehlJuergen RuthThomas Seiler
    • Jens SchneiderDetlef HeimannGoetz ReinhardtHenrico RungeLothar DiehlJuergen RuthThomas Seiler
    • G01N27/407
    • G01N27/419
    • A gas sensor for detecting particles in a gas stream has a first electrochemical pump cell, which has a measuring chamber in which a first electrode is disposed to pump particles between the first measuring chamber and the gas stream. Furthermore, a second electrochemical pump cell is provided, which has a second measuring chamber in which a second electrode is disposed so as to pump particles. The second measuring chamber is connected to the gas stream via an absorber medium for absorption of the particles to be detected. This makes it possible to absorb the particles to be detected in a first operating mode using the absorber medium, and to desorb the absorbed particles in a second operating mode, and to detect the quantity of the desorbed particles. Thus, the gas sensor is able to take even low concentrations into account, and short-term measuring errors do not have such a serious effect.
    • 用于检测气流中的颗粒的气体传感器具有第一电化学泵电池,其具有测量室,其中设置有第一电极以在第一测量室和气流之间泵送颗粒。 此外,提供了第二电化学泵电池,其具有第二测量室,其中设置第二电极以泵送颗粒。 第二测量室经由吸收介质连接到气流,用于吸收要检测的颗粒。 这使得可以使用吸收介质以第一操作模式吸收待检测的颗粒,并且以第二操作模式解吸吸收的颗粒,并且检测解吸的颗粒的量。 因此,气体传感器能够考虑到甚至低的浓度,并且短期测量误差不具有如此严重的影响。