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    • 8. 发明授权
    • Electronic measurement of end point of asphalt oxidation
    • 沥青氧化终点电子测量
    • US3868315A
    • 1975-02-25
    • US38267773
    • 1973-07-26
    • EXXON RESEARCH ENGINEERING CO
    • FORSTER ERIC OGOLDSHINE ALAN DGATHMAN ALBERT
    • C10C3/04G01N27/22G01N33/42G05D21/02C10G1/00
    • C10C3/04G05D21/02Y10S208/01Y10T436/12
    • An electronic measuring technique for use in determining the end point of a process, such as an air blowing process employed in the manufacture of asphalt, by means of an electronic bridge circuit, a device for monitoring continuously certain electrical properties of the actual product, and a reference standard which simulates the preselected desired electrical properties of the product, such as oxidized asphalt, being manufactured. As the process progresses the difference between the sensed electrical properties of the actual product and those simulated by the reference standard decreases and becomes zero or nearly zero at the end point. When the difference is zero, provision is made for the process to be stopped automatically or manually, whereupon the product is transferred into its respective storage area.
    • 一种用于确定工艺终点的电子测量技术,例如用于制造沥青的吹风方法,借助于电子桥式电路,用于连续监测实际产品的某些电气特性的装置,以及 模拟产品的预选所需电性能的参考标准,如氧化沥青。 随着过程的进行,实际产品的感测电气特性与由参考标准模拟的电气特性之间的差异减小,在终点处变为零或接近零。 当差值为零时,将自动或手动停止该过程,从而将产品转移到其相应的存储区域。