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    • 3. 发明申请
    • Ultrasonic filling level sensor
    • 超声波灌装液位传感器
    • US20050150291A1
    • 2005-07-14
    • US10976008
    • 2004-10-28
    • Wolfgang Voss
    • Wolfgang Voss
    • G01F23/296G01F23/00
    • G01F23/2962
    • An ultrasonic filling level sensor (1), has an elongated measuring chamber (2), which is provided with an opening (3) at each of its two ends, wherein a liquid has the same filling level as outside the measuring chamber (2). The sensor includes an ultrasonic transceiver (6), which is associated with one end of the measuring chamber (2) and the emitted sound signals of which are reflected at the surface of the liquid and at a calibrating reflector (5) and received by the ultrasonic transceiver (6), in order to determine the filling level from the relationship between the transit times of the two signals. It is provided that the cross-section of the measuring chamber (2) and the nature of a wall of the measuring chamber are made to suit the properties of the liquid in such a way that, even in a tilted position of the measuring chamber (2), the surface of the liquid forms a meniscus (14) which forms a reflection portion directed toward the ultrasonic transceiver (6).
    • 超声波填充液位传感器(1)具有细长的测量室(2),在其两端各设一个开口(3),其中液体与测量室(2)的外侧具有相同的填充水平, 。 传感器包括与测量室(2)的一端相关联的超声波收发器(6),并且其发射的声音信号在液体的表面处和在校准反射器(5)处反射并由 超声波收发器(6),以便根据两个信号的传送时间之间的关系来确定填充水平。 设置了测量室(2)的横截面和测量室的壁的性质使其适合液体的性质,使得即使在测量室的倾斜位置 如图2所示,液体的表面形成弯液面(14),其形成指向超声波收发器(6)的反射部分。