发明名称 |
Hydrocarbon gas sensor |
摘要 |
Provided is a gas sensor capable of accurately obtaining a hydrocarbon gas concentration even if a measurement gas contains water vapor. A main pumping cell adjusts an oxygen partial pressure of a first internal space such that a hydrocarbon gas in a measurement gas is not substantially burned in the first internal space. An auxiliary pumping cell adjusts an oxygen partial pressure of a second internal space such that inflammable gas components except for hydrocarbon are selectively burned. Then, a measuring pumping cell supplies oxygen to a surface of a measuring electrode. As a result, hydrocarbon existing in the measurement gas being in contact with the measuring electrode is all burned on the surface of the measuring electrode and, based on the magnitude of a current flowing between the measuring electrode and a main pumping electrode at that time, identifies a concentration of a hydrocarbon gas component existing in the measurement gas. |
申请公布号 |
EP2803990(A2) |
申请公布日期 |
2014.11.19 |
申请号 |
EP20140167743 |
申请日期 |
2014.05.09 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
NAKASONE, OSAMU;NISHIKAWA, SATOSHI;NIIZUMA, SHOTAROU;HIRATA, NORIKO;NAKAYAMA, YUKI |
分类号 |
G01N27/407;G01N27/406;G01N27/417;G01N27/419;G01N33/00 |
主分类号 |
G01N27/407 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|