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Filling level measurement

A filling height, height technology, used in measuring devices, radio wave measuring systems, liquid/fluid solids measurement, etc.

Active Publication Date: 2015-06-03
KSB AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to specify a device for filling level measurement which is insensitive to contamination and which provides reliable measured values ​​even in the event of foam formation

Method used

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Examples

Experimental program
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Embodiment Construction

[0042] exist figure 1 A device for determining the fill level of a liquid is shown in . The first element 1 acts as a transmitter and generates an acoustic signal. The second element 2 acts as a detector and receives the reflected acoustic signal. Both elements 1 , 2 comprise piezoelectric substrates into which comb-shaped electrodes are inserted in each case. It forms an interdigital transducer (IDT = interdigital transducer) for converting an electrical signal into an acoustic signal on the transmitter side or an acoustic signal into an electrical signal on the receiver side Signal.

[0043]Elements 1, 2 are fixed on solid 3. The solid body 3 is designed as a cylindrical hollow body, the bottom of which is closed and which is open upwards and thus forms the measuring tube. The measuring tube is arranged in the container 4, in image 3 Container 4 is shown in . The measuring tube is made of aluminum and is oriented vertically in the container 4 .

[0044] A region 5 i...

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PUM

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Abstract

The invention relates to an apparatus and a method for determining the filling level of a liquid in a container (4). The apparatus comprises at least one element (1, 2) which transmits and / or receives acoustic signals. The acoustic signals propagate along a surface of a solid (3). The solid (3) is arranged in such a manner that at least one part of a surface of the solid (3) can be wetted by the liquid. The solid (3) has, at different container heights, regions (5) which reflect the acoustic signals.

Description

technical field [0001] The invention relates to a device and a method for determining the filling level of a liquid in a container, the device having at least one element for transmitting and / or receiving acoustic signals. Background technique [0002] Such devices are used, for example, in waste water lifting installations. The hoist draws off the waste water that accumulates below the backflow layer (Rückstauebene) to prevent backflow (rückstausicher). It is used to transport waste water containing faeces that accumulates in the basement of a residential building. [0003] In conventional lifting installations, the filling level is measured and adjusted with the aid of a float switch. Measuring methods using moving mechanical components are used here. Components of machinery are relatively susceptible to contaminants such as are present in wastewater from lifting facilities. [0004] Document DE 10 2007 008 692 A1 describes a container for a lifting installation, in wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/28
CPCG01F23/2962G01S7/521G01S15/08G01S15/88
Inventor F.G.博斯巴赫S.劳厄G.林德纳F.奥伯迈尔J.舒勒雷尔
Owner KSB AG