公开(公告)号：EP0851226B1

公开(公告)日：2005-10-19

申请号：EP97310542.2

申请日：1997-12-23

申请人： NGK INSULATORS, LTD.

发明人： Yokota, Minoru ,  Murase, Takao ,  Mizusaki, Junichiro

IPC分类号： G01N27/407 ,  G01N33/00

CPC分类号： G01N27/4074

公开(公告)号：EP0769693A1

公开(公告)日：1997-04-23

申请号：EP96307585.8

申请日：1996-10-18

申请人： NGK INSULATORS, LTD.

发明人： Kato, Nobuhide ,  Ina, Noriyuki ,  Watanabe, Yasushi ,  Murase, Takao

IPC分类号： G01N27/407 ,  G01N33/00 ,  G01N27/419

CPC分类号： G01N27/4074 ,  G01N27/419 ,  G01N33/0014

摘要： Disclosed is a method and a sensing device capable of measuring a predetermined measurement gas component continuously and accurately with good response over a long period of time without being affected by a high oxygen concentration in a measurement gas. The measurement gas is introduced into a first processing zone (6). A first electrochemical pumping cell (4a, 16, 18) is used to lower a partial pressure of oxygen in an atmosphere thereof to a degree sufficient to control a partial pressure of oxygen in a subsequent second processing zone (7). The gas is introduced into the second processing zone (7). Oxygen in an atmosphere is pumped out by using a second electrochemical pumping cell (4c, 28, 30) so that the partial pressure of oxygen in the atmosphere is controlled to have a low value of partial pressure of oxygen which does not substantially affect measurement of an amount of the measurement gas component. The gas is introduced into a third processing zone (8). Oxygen produced by reducing or decomposing the measurement gas component is pumped out by using a third electrochemical pumping cell (4c, 36, 38). The amount of the measurement gas component is determined from a detected value of a pumping current flowing through the third electrochemical pumping cell. The amount of the measurement gas component may be also determined by measuring an electromotive force by using an electrochemical sensor cell, in place of the third electrochemical pumping cell.

摘要翻译： 本发明公开了一种方法和检测装置，其能够在不受测量气体中的高氧浓度的影响的情况下，在长时间内连续且准确地测量预定的测量气体成分而具有良好的响应。 将测量气体引入第一处理区（6）。 第一电化学泵送单元（4a，16,18）用于将氧气在其气氛中的分压降低到足以控制随后的第二处理区（7）中的氧分压。 将气体引入第二处理区（7）。 通过使用第二电化学泵浦单元（4c，28,30）将大气中的氧气抽出，使得大气中的氧分压被控制为具有低的氧分压值，其基本上不影响测量 一定量的测量气体组分。 将气体引入第三处理区（8）。 通过使用第三电化学泵送单元（4c，36,38）将通过还原或分解测量气体组分产生的氧气抽出。 测量气体成分的量根据流过第三电化学泵送单元的泵浦电流的检测值确定。 也可以通过使用电化学传感器单元来代替第三电化学泵送单元来测量电动势来确定测量气体成分的量。

公开(公告)号：EP0215607A1

公开(公告)日：1987-03-25

申请号：EP86306773.2

申请日：1986-09-02

申请人： NGK INSULATORS, LTD.

发明人： Oshima, Norio ,  Murase, Takao ,  Oki, Shuichiro

IPC分类号： G01N27/417

CPC分类号： G01N27/4077

摘要： An oxygen sensor for detecting oxygen concentration in the exhaust gas from internal combustion engines comprises a closed-end tube (1) of a solid electrolyte having an inside reference electrode connecting to the atmosphere and an outside measuring electrode to be exposed to the exhaust gas, a housing (2) to support the tube (1), a metallic sleeve (3) fixed to the housing (2), to isolate the reference electrode from the exhaust gas, while atmospheric air is allowed to enter into the tube (1) through air passages (5) are protected by a filter (6) securely fixed to the metallic sleeve (3), pressed by an elastic member (7). whereby water or mud is prevented from entering into the tube (1) whilst the sensor is at work.

摘要翻译： 一种用于检测内燃机排气中氧浓度的氧气传感器包括一个固体电解质封闭管（1），该固体电解质具有连接到大气的内部参考电极和暴露在废气中的外部测量电极， 一个支撑管1的壳体2，一个固定在壳体2上的金属套筒3，当大气允许进入管子1时，将参比电极与废气隔离开来， 通过空气通道（5）由牢固地固定到金属套筒（3）的过滤器（6）保护，由弹性件（7）压紧。 由此在传感器工作时防止水或泥浆进入管（1）。

公开(公告)号：EP1494024A3

公开(公告)日：2005-01-19

申请号：EP04023148.2

申请日：1997-05-29

申请人： NGK INSULATORS, LTD.

发明人： Murase, Takao ,  Usami, Jun ,  Kon, Masao

IPC分类号： G01N27/417 ,  G01N27/419 ,  G01N27/407

CPC分类号： G01N27/4175 ,  G01N27/419

摘要： A gas analyzer includes a gas sensor (100), a drive section (101) that pumps oxygen in first to third processing zones of the gas sensor, an operating section (102) that operates a pumping current flowing in a third electro-chemical pump cell into a gas value to be measured, a display output section (103) that displays a value operated by the operating section, or outputs the value as an electrical output to the external, and a heater drive section (104) that heats the gas sensor to a predetermined temperature. In the gas sensor a gas containing a gas component to be measured having bound oxygen is introduced into a first processing zone under a predetermined diffusion resistance, and an oxygen partial pressure in the atmosphere within the first processing zone is controlled to a predetermined oxygen partial pressure due to the pumping action of oxygen by the first electro-chemical pump cell in the first processing zone. The gas to be measured is then introduced into a second processing zone and third processing zone where the component to be measured in the atmosphere introduced from the second processing zone is reduced or decomposed.

摘要翻译： 本发明提供一种气体分析装置，其具备气体传感器（100），在气体传感器的第一〜第三处理区域中抽取氧的驱动部（101），对在第三电化学泵 （103），该显示输出部（103）显示由所述操作部进行操作的值，或者将该值作为电输出向外部输出;以及加热器驱动部（104），其加热所述气体 传感器到预定温度。 在该气体传感器中，将含有结合了氧的测定对象气体成分的气体以规定的扩散阻力导入第一处理区域，将第一处理区域内的气氛中的氧分压控制为规定的氧分压 由于第一处理区中的第一电化学泵单元的氧气的泵送作用。 然后将要测量的气体引入到第二处理区和第三处理区，其中从第二处理区引入的大气中待测量的组分被减少或分解。

公开(公告)号：EP0982586A3

公开(公告)日：2001-10-24

申请号：EP99306352.8

申请日：1999-08-11

申请人： NGK INSULATORS, LTD.

发明人： Yokota, Minoru ,  Murase, Takao

IPC分类号： G01N27/407 ,  G01N33/00

CPC分类号： G01N27/4074 ,  G01N33/004 ,  Y02A50/248

摘要： Provided is a CO sensor which comprises a solid electrolyte 11 having oxygen ion conductivity and a standard electrode 15 and a sensing electrode 16 for measurement of carbon monoxide and at least one standard electrode 15 and sensing electrode 17 for measurement of at least one different gas other than carbon monoxide, especially sulfur dioxide, these electrodes being formed on at least a part of the surface of the solid electrolyte 11. This CO sensor is excellent in selectivity for carbon monoxide, can exclude the influence of the coexisting sulfur dioxide and oxygen on the carbon monoxide measured value, and, besides, can be used at high temperatures. A method for making the sensor and a method of using it are also provided.

公开(公告)号：EP0851226A3

公开(公告)日：2000-01-26

申请号：EP97310542.2

申请日：1997-12-23

申请人： NGK INSULATORS, LTD.

发明人： Yokota, Minoru ,  Murase, Takao ,  Mizusaki, Junichiro

IPC分类号： G01N27/407 ,  G01N33/00

CPC分类号： G01N27/4074

摘要： In a CO gas sensor composed of a CO gas sensing electrode 3 being made of Au or an Au alloy and a reference electrode 2 electrically connected to at least part of a surface of a solid electrolyte having an oxygen ion transfer property, which is superior in CO gas selectivity, in particular, reducing the affect of the co-existing oxygen to CO, and which works with a high precision at a high temperature, and in a CO gas measuring device using the gas sensor, the gas sensor being capable of determining a CO gas concentration by measuring a electromotive force change due to adsorption/oxidization of the carbon monoxide gas in the sensing electrode 3 when a constant current is caused to flow between the reference electrode 2 and the sensing electrode 3 or a current value caused by the oxidizing reaction of the carbon monoxide gas in the sensing electrode when a voltage is kept constant between the reference electrode 2 and the sensing electrode 3.

摘要翻译： 在由由Au或Au合金制成的CO气体感测电极3和与具有氧离子转移性的固体电解质的表面的至少一部分电连接的参考电极2构成的CO气体传感器中，其优于 CO气体选择性，特别是降低共存氧对CO的影响，并且在高温下以高精度工作;以及在使用气体传感器的CO气体测量装置中，气体传感器能够确定 通过测量当在参考电极2和感测电极3之间流过恒定电流时感测电极3中的一氧化碳气体的吸附/氧化引起的电动势变化的CO气体浓度或由 当参考电极2和感测电极3之间的电压保持恒定时，感测电极中一氧化碳气体的氧化反应。

公开(公告)号：EP0851226A2

公开(公告)日：1998-07-01

申请号：EP97310542.2

申请日：1997-12-23

申请人： NGK INSULATORS, LTD.

发明人： Yokota, Minoru ,  Murase, Takao ,  Mizusaki, Junichiro

IPC分类号： G01N27/407

CPC分类号： G01N27/4074

摘要： In a CO gas sensor composed of a CO gas sensing electrode 3 being made of Au or an Au alloy and a reference electrode 2 electrically connected to at least part of a surface of a solid electrolyte having an oxygen ion transfer property, which is superior in CO gas selectivity, in particular, reducing the affect of the co-existing oxygen to CO, and which works with a high precision at a high temperature, and in a CO gas measuring device using the gas sensor, the gas sensor being capable of determining a CO gas concentration by measuring a electromotive force change due to adsorption/oxidization of the carbon monoxide gas in the sensing electrode 3 when a constant current is caused to flow between the reference electrode 2 and the sensing electrode 3 or a current value caused by the oxidizing reaction of the carbon monoxide gas in the sensing electrode when a voltage is kept constant between the reference electrode 2 and the sensing electrode 3.

摘要翻译： 在由由Au或Au合金制成的CO气体感测电极3和与具有氧离子转移性的固体电解质的表面的至少一部分电连接的参考电极2构成的CO气体传感器中，其优于 CO气体选择性，特别是降低共存氧对CO的影响，并且在高温下以高精度工作;以及在使用气体传感器的CO气体测量装置中，气体传感器能够确定 通过测量当在参考电极2和感测电极3之间流过恒定电流时感测电极3中的一氧化碳气体的吸附/氧化引起的电动势变化的CO气体浓度或由 当参考电极2和感测电极3之间的电压保持恒定时，感测电极中一氧化碳气体的氧化反应。

公开(公告)号：EP0982586B1

公开(公告)日：2006-10-11

申请号：EP99306352.8

申请日：1999-08-11

申请人： NGK INSULATORS, LTD.

发明人： Yokota, Minoru ,  Murase, Takao

IPC分类号： G01N27/407 ,  G01N33/00

CPC分类号： G01N27/4074 ,  G01N33/004 ,  Y02A50/248

摘要： Provided is a CO sensor which comprises a solid electrolyte 11 having oxygen ion conductivity and a standard electrode 15 and a sensing electrode 16 for measurement of carbon monoxide and at least one standard electrode 15 and sensing electrode 17 for measurement of at least one different gas other than carbon monoxide, especially sulfur dioxide, these electrodes being formed on at least a part of the surface of the solid electrolyte 11. This CO sensor is excellent in selectivity for carbon monoxide, can exclude the influence of the coexisting sulfur dioxide and oxygen on the carbon monoxide measured value, and, besides, can be used at high temperatures. A method for making the sensor and a method of using it are also provided.

公开(公告)号：EP0810433B1

公开(公告)日：2005-01-12

申请号：EP97303637.9

申请日：1997-05-29

申请人： NGK INSULATORS, LTD.

发明人： Murase, Takao ,  Usami, Jun ,  Kon, Masao

IPC分类号： G01N27/417 ,  G01N27/419 ,  G01N27/407

CPC分类号： G01N27/4175 ,  G01N27/419

公开(公告)号：EP0810433A2

公开(公告)日：1997-12-03

申请号：EP97303637.9

申请日：1997-05-29

申请人： NGK INSULATORS, LTD.

发明人： Murase, Takao ,  Usami, Jun ,  Kon, Masao

IPC分类号： G01N27/417 ,  G01N27/419

CPC分类号： G01N27/4175 ,  G01N27/419

摘要： A gas analyzer includes a gas sensor (100), a drive section (101) that pumps oxygen in first to third processing zones of the gas sensor, an operating section (102) that operates a pumping current flowing in a third electro-chemical pump cell into a gas value to be measured, a display output section (103) that displays a value operated by the operating section, or outputs the value as an electrical output to the external, and a heater drive section (104) that heats the gas sensor to a predetermined temperature. In the gas sensor a gas containing a gas component to be measured having bound oxygen is introduced into a first processing zone under a predetermined diffusion resistance, and an oxygen partial pressure in the atmosphere within the first processing zone is controlled to a predetermined oxygen partial pressure due to the pumping action of oxygen by the first electro-chemical pump cell in the first processing zone. The gas to be measured is then introduced into a second processing zone under a predetermined diffusion resistance, and oxygen is pumped out by the second electro-chemical pump cell in the second processing zone, so that the oxygen partial pressure in the atmosphere is controlled to a low oxygen partial pressure value that does not substantially influence the measurement of the amount of the gas component to be measured. Thereafter the gas to be measured is introduced into a third processing zone under a predetermined diffusion resistance, and the gas component to be measured in the atmosphere introduced from the second processing zone is reduced or decomposed in the third processing zone, and oxygen generated at that time is pumped out by a third electro-chemical pump cell. The pumping current flowing in the third electro-chemical pump cell is detected. The gas analyzer is calibrated using a plurality of samples of known gas component to be measured as a standard gas and pumping currents corresponding to the standard gas samples as a calibration curve.

摘要翻译： 气体分析仪包括气体传感器（100），在气体传感器的第一至第三处理区域中泵送氧气的驱动部分（101），操作部分（102），其操作在第三电化学泵 显示输出部（103），其显示由操作部操作的值，或将该值作为电输出输出到外部;以及加热器驱动部（104），其对所述气体进行加热 传感器到预定温度。 在气体传感器中，将含有具有结合氧的被测量气体成分的气体以规定的扩散阻力引入第一处理区域，将第一处理区域内的大气中的氧分压控制为规定的氧分压 由于第一处理区域中的第一电化学泵电池的氧气的泵送作用。 然后将待测量的气体以预定的扩散阻力引入第二处理区域，并且在第二处理区域中由第二电化学泵电池泵出氧气，使得将大气中的氧分压控制为 低氧分压值，其基本上不影响待测量的气体组分的量的测量。 此后，将待测量的气体以预定的扩散阻力引入第三处理区域，并且在第三处理区域中从第二处理区域引入的气氛中测量的气体成分被还原或分解， 时间由第三个电化学泵电池抽出。 检测在第三电化学泵电池中流动的泵浦电流。 气体分析仪使用多个待测量的气体组分样品作为标准气体和对应于标准气体样品的泵浦电流作为校准曲线进行校准。