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    • 23. 发明授权
    • Gas sensor with a high combined resistance to lead wire resistance ratio
    • 气体传感器具有较高的组合电阻与导线电阻比
    • US06348140B1
    • 2002-02-19
    • US09541903
    • 2000-04-03
    • Hideki MatsubaraNoboru MatsuiNobuhiro Hayakawa
    • Hideki MatsubaraNoboru MatsuiNobuhiro Hayakawa
    • G01N27407
    • G01N27/4067G01N27/419
    • A high temperature sensor allowing for accurate measurement including wires running through an oxygen ion conductor and connecting to electrodes sandwiching an oxygen ion conductor substrate having an electrical resistance far smaller than the combined resistance (Rpvs) appearing across the lead wires, where Rpvs is determined by way of a pulse voltage sensing method applied across the electrodes. In the case of a two cavity sensor for NOx measurement, Rpvs is not less than 2.6 times greater, or more preferably 4 times greater than the resistance of the wires. In another embodiment, a common internal oxygen reference source cavity is formed inside the oxygen ion conductor so as to provide the same oxygen partial pressure base for other cavities.
    • 一种高温传感器,允许精确测量,包括穿过氧离子导体的导线并连接到夹持氧离子导体衬底的电极,该氧离子导体衬底的电阻远远小于出现在引线两端的组合电阻(Rpvs),其中Rpvs由 施加在电极上的脉冲电压感测方法。 在用于NOx测量的两个空腔传感器的情况下,R pvs不小于电线的电阻的2.6倍或更优选的4倍。 在另一个实施例中,在氧离子导体内部形成公共内部氧参考源腔,以便为其它空腔提供相同的氧分压基座。