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    • 4. 发明授权
    • Gauge for measuring liquid levels
    • 用于测量液位的量具
    • US5950487A
    • 1999-09-14
    • US710654
    • 1996-09-20
    • Joseph W. Maresca, Jr.Alan A. BurnsEric G. Eckert
    • Joseph W. Maresca, Jr.Alan A. BurnsEric G. Eckert
    • G01F23/68G01F23/70G01F23/00
    • G01F23/686G01F23/706
    • An apparatus for measuring liquid level in a container, the apparatus having a flexible measurement scale attached at one end to a weight for retainment at the bottom of the container and at the opposite end to a receiver at the top of the container. A float moves along the flexible scale, and has a configuration and density designed to place a portion of the float below the level of the liquid to be measured and a portion above the liquid level. The portion above the liquid level contains transmitter apparatus for applying energy to one side of the scale, and detection apparatus on the other side for detecting energy transmitted through the scale and converting it to a liquid level in the container. The accuracy of readings is enhanced through the use of a wide gap between the scale and float at the liquid-air interface for reducing surface effects between the float and the scale, and through the use of a special two-dimensional vertically offset gray scale code that allows for the use of a more narrow scale and larger spacing between components.
    • 一种用于测量容器中的液位的装置,该装置具有柔性的测量标尺,该柔性测量标尺在一端附接到用于保持在容器底部的重物,并且在与容器顶部的接收器相对的端部。 浮子沿着柔性刻度移动,并且具有被设计成将浮体的一部分置于待测量液体的水平面和液面以上的部分的结构和密度。 液位上方的部分包含用于向刻度尺的一侧施加能量的发射装置,另一侧的检测装置用于检测透过刻度的能量,并将其转换成容器中的液面。 通过使用液 - 液界面处的刻度和浮子之间的宽间隙来增强读数的精度,以减少浮子和刻度之间的表面效应,并通过使用特殊的二维垂直偏移灰度代码 这允许在组件之间使用更窄的尺寸和更大的间隔。