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    • 1. 发明授权
    • Sensor element for the determination of concentration of gas
constituent(s)
    • 用于测定气体成分浓度的传感器元件
    • US5545301A
    • 1996-08-13
    • US360737
    • 1994-12-23
    • Karl-Hermann FrieseWerner GruenwaldRoland StahlClaudio de la PrietaGerhard SchneiderHarald Neumann
    • Karl-Hermann FrieseWerner GruenwaldRoland StahlClaudio de la PrietaGerhard SchneiderHarald Neumann
    • G01N27/41G01N27/407G01N27/26
    • G01N27/4071
    • A sensor element for determining concentration of at least one constituent of a gas mixture operates on an electro-chemical measuring process and includes a gas measuring chamber; a pair of electrodes and an electrode chamber located between the pair of electrodes; and a diffusion conduit adjoining the electrode chamber and having a gas input which connects with the gas measuring chamber, having a gas output which connects with the electrode chamber, and having at least one cross-sectional area including a height, w, and a length, L, which height, w, has a preselected minimum value, and which length, L, has a value which is equal to or greater than the preselected minimum value of the height, w. The constituent of the gas mixture has a mean free path length through the sensor element, the gas measuring chamber has a cross-sectional area including a height and a length each of which are at least as large as the minimum height, w, of the diffusion conduit, and the height, w, of respective ones of the at least one cross-sectional area of the diffusion conduit is at least a multiple of the mean free path length of the constituent of the gas mixture to be measured. Advantageously, substantially only gaseous phase diffusion occurs when the predetermined minimum value of the height, w, is at least a multiple of a minimum value of the mean free path length for the gas constituent measured.
    • 用于确定气体混合物的至少一种组分的浓度的传感器元件在电化学测量过程中运行,并且包括气体测量室; 位于所述一对电极之间的一对电极和电极室; 以及邻接所述电极室并具有与所述气体测量室连接的气体输入的扩散管道,具有与所述电极室连接的气体输出,并且具有包括高度w和长度的至少一个横截面区域 ,L,其高度w具有预选的最小值,并且长度L具有等于或大于预定的最小值的最小值w的值。 气体混合物的组分具有通过传感器元件的平均自由路径长度,气体测量室具有包括高度和长度的横截面积,每个高度和长度至少与最小高度w一样大, 扩散管道的扩散管道,并且扩散管道的至少一个横截面积中相应的一个的高度w至少为要测量的气体混合物的成分的平均自由程长度的倍数。 有利地,当高度的预定最小值w至少为测量的气体成分的平均自由程长度的最小值的倍数时,基本上仅发生气相扩散。
    • 6. 发明授权
    • Temperature sensor and method for producing temperature sensor elements
    • 温度传感器和温度传感器元件的制造方法
    • US5406246A
    • 1995-04-11
    • US971778
    • 1993-02-12
    • Karl-Hermann FrieseHarald Neumann
    • Karl-Hermann FrieseHarald Neumann
    • G01K7/18G01K7/22H01C7/02H01C7/10H01C1/012
    • G01K7/18Y10T29/49085
    • A positive temperature coefficient temperature sensor for use in exhaust-gas systems of internal-combustion engines includes a sensor element having a multilayer laminate composite structure with a positive temperature coefficient thermistor, formed by at least two resistor tracks arranged one above another and electrically insulated from one another. One of the layers of the multilayer structure is an insulating ceramic base film, and a first one of the at least two resistor tracks, with a supply lead, is printed onto the insulating ceramic base film. A second one of the at least two resistor tracks is disposed separately on the insulating ceramic base film by means of at least one insulating layer printed above the first one of the at least two resistor tracks. The at least two resistor tracks disposed one above another are connected by a land guided through the at least one insulating layer. A further film is subsequently laminated on the surface of the insulating ceramic base film printed with the at least two resistor tracks. The at least two resistor tracks are hermetically sealed by the laminate composite structure with respect to a gas being measured and environmental air.
    • PCT No.PCT / DE91 / 00601 Sec。 371日期:1993年2月12日 102(e)日期1993年2月12日PCT 1991年7月25日PCT公布。 出版物WO92 / 03711 日本3月5日,1992年。用于内燃机废气系统的正温度系数温度传感器包括具有正温度系数热敏电阻的多层层压复合结构的传感器元件,该正温度系数热敏电阻由至少两个电阻轨道排列 一个在另一个之上并且彼此电绝缘。 多层结构的层之一是绝缘陶瓷基膜,并且具有供电引线的至少两个电阻轨道中的第一个被印刷到绝缘陶瓷基膜上。 所述至少两个电阻轨道中的第二个通过至少一个印刷在所述至少两个电阻轨迹中的所述至少两个电阻轨迹上的绝缘层分开设置在所述绝缘陶瓷基底膜上。 一个上面设置的至少两个电阻轨道通过穿过至少一个绝缘层引导的平台连接。 随后,在印刷有至少两个电阻轨道的绝缘陶瓷基底膜的表面上层压另外的膜。 至少两个电阻轨道相对于被测量的气体和环境空气被叠层复合结构气密密封。