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    • 1. 发明授权
    • Method for determining gas concentrations and gas sensor with a solid
electrolyte
    • 用固体电解质测定气体浓度和气体传感器的方法
    • US5403452A
    • 1995-04-04
    • US930552
    • 1992-09-28
    • Bernd HielscherBerthold HornMartin Schmah
    • Bernd HielscherBerthold HornMartin Schmah
    • G01N27/416G01N27/48G01N27/49G01N27/26
    • G01N27/4045
    • The invention relates to a method for determining the concentration of gases in a mixture of gasses by means of a gas sensor composed of three electrodes 1,2,3 and a solid electrolyte 4 upon the surface of which are secured the electrodes. A voltage Us being composed of a dc component Udc and an ac component Uac is applied to at least two electrodes, the measuring electrode 1 and the counter electrode 2. Us is controlled with reference to the reference electrode 3. The voltage components Udc and Uac of the voltage Us are chosen so that the metal salt formed by the ions of the solid electrolyte 4 with the gaseous components to be detected is again decomposed. The ion, current flowing between the electrodes is measured in dependence upon the voltage as applied. The concentration of the several gasses can be determined by known mathematical methods from the functional relation between the ion current and the voltage Us.
    • PCT No.PCT / DE91 / 00313 Sec。 371日期:1992年9月28日 102(e)日期1992年9月28日PCT 1991年4月17日PCT PCT。 第WO91 / 16624号公报 日期为1991年10月31日。本发明涉及一种通过由三个电极1,2,3和固体电解质4组成的气体传感器来确定气体混合气体浓度的方法,其表面为 固定电极。 将由直流分量Udc和交流分量Uac组成的电压Us施加到至少两个电极,测量电极1和对电极2.Iu参照参考电极3进行控制。电压分量Udc和Uac 选择电压Us,使得由固体电解质4的离子形成的金属盐与待检测的气体成分再次分解。 根据施加的电压来测量在电极之间流动的离子,电流。 几种气体的浓度可以通过已知的数学方法从离子电流与电压Us之间的函数关系来确定。
    • 3. 发明授权
    • Apparatus for measuring the total content of organic carbon and nitrogen
in water
    • 用于测量水中有机碳和氮的总含量的装置
    • US5459075A
    • 1995-10-17
    • US125410
    • 1993-09-22
    • Walter FabinskiBernd HielscherPeter SchlauChristian Wolff
    • Walter FabinskiBernd HielscherPeter SchlauChristian Wolff
    • G01N31/00G01N33/18G01N33/00G01N21/00
    • G01N33/182G01N33/1846Y10T436/176152Y10T436/235
    • An apparatus for measuring the total content of organic carbon (TOC) and nitrogen (TN) in water. The TOC value is correctly determined as the sum of the liquid, dissolved, and solid substances of a specimen of the water. The apparatus includes a NDIR gas analyzer for simultaneously measuring the concentration of CO.sub.2 and NO gas components with a phase separator, a thermal reactor, a condenser, and two amplifiers for the pneumatic signals of the receivers with an indicator for the measured TOC and TN concentrations. The specimen is split into a gaseous part and a liquid part in the phase separator. The gaseous part which essentially contains the inorganic fraction of carbon, the TIC fraction, in the form of CO.sub.2 gas is cooled in a condenser until a substantial fraction of its water vapor content is separated in the condenser by condensation. The dried gaseous part is directed via the comparison vessels as comparison gas. The gaseous part exiting from the comparison vessels is returned to the liquid part of the specimen again in its entirety and oxidized together with the latter in a thermal reactor. The gas specimen which is formed in so doing is charged via the condenser with water vapor having the same temperature as the comparison gas and is fed to the measurement chambers of the vessels as measurement gas which contains the entire carbon dioxide fraction and the entire nitrogen oxide fraction of the gas specimen.
    • 一种用于测量水中有机碳(TOC)和氮(TN)的总含量的装置。 TOC值被正确地确定为水样品的液体,溶解和固体物质的总和。 该装置包括一个NDIR气体分析仪,用于通过相分离器,热反应器,冷凝器和两个放大器同时测量CO2和NO气体组分的浓度,用于接收器的气动信号,并具有测量TOC和TN浓度的指标 。 样品在相分离器中分成气态部分和液体部分。 基本上含有碳的无机部分的气体部分TIC部分以CO 2气体的形式在冷凝器中冷却,直到其水蒸汽含量的相当一部分在冷凝器中通过冷凝分离。 干燥的气态部分通过比较容器作为比较气体引导。 从比较容器中排出的气体部分全部返回到样品的液体部分,并在热反应器中与后者一起被氧化。 这样形成的气体样品通过冷凝器与具有与比较气体相同温度的水蒸汽充入,并被供给至容器的测量室,作为包含整个二氧化碳馏分和整个氮氧化物的测量气体 气体样本的分数。