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Evaluation device and method for determining a characteristic variable for the position of a boundary surface in a container

A technology of boundary surface and evaluation equipment, applied in the field of measurement technology, which can solve problems such as efficient measurement of the position of the interface without description

Active Publication Date: 2012-11-28
VEGA GRIESHABER GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] However, none of these documents describe an efficient measurement of the position of the interface

Method used

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  • Evaluation device and method for determining a characteristic variable for the position of a boundary surface in a container
  • Evaluation device and method for determining a characteristic variable for the position of a boundary surface in a container
  • Evaluation device and method for determining a characteristic variable for the position of a boundary surface in a container

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Embodiment Construction

[0078] The illustrations in the figures are schematic and not to scale. exist Figure 1 to Figure 9 In the following description of the , the same reference numerals are used for the same or corresponding elements.

[0079] In all types of distance or fill level measurements, the present invention can be used to determine the position of the filling material surface. The distance to the filling material determined using the evaluation device, method or level gauge can be provided in analog form (eg via a 4...20 mA interface) or also in digital form (eg via a fieldbus). For this purpose, an external interface can be used, via which a further external device can access the characteristic variables of the position of the separation layer or the boundary layer outside the evaluation device. For example, the distance of the separation layer from the level gauge or from the reference surface can be provided. In other words, a given characteristic variable can be communicated to a...

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Abstract

The invention describes an evaluation device (701) and a method for determining a characteristic variable (dL) for the position of a boundary surface (105, 108) in a container (109, 501, 601), wherein multiple echoes (207, 209, 405, 611) including at least one stage (N, N1, N2) is identified in the echo curve (204, 427), wherein the characteristic variable (dL) of the boundary surface in the container is determined based on the positions (DML1, DML2, DMB1) of the multiple echoes and the stages (N, N1, N2)of the multiple echoes.

Description

[0001] Citations to Related Applications [0002] This application claims the benefit of the filing dates of European Patent Application No. EP 11 167 924.7, filed May 27, 2011, and US Provisional Patent Application No. 61 / 490760, filed May 27, 2011, both of which are incorporated by reference The disclosures of are incorporated herein. technical field [0003] The present invention relates to the field of measurement technology; in particular, the invention relates to the field of liquid level measurement using the transit time method. An evaluation device for a liquid level gauge for determining a characteristic variable of the position of a boundary surface, a method for determining a characteristic variable of the position of a boundary surface in a container, a computer-readable method for carrying out the method according to the invention are described A storage medium and a program element for carrying out the method according to the invention. Background technique ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/28
CPCG01F23/284G01F22/00
Inventor 罗兰·韦勒卡尔·格里斯鲍姆约瑟夫·费伦巴赫
Owner VEGA GRIESHABER GMBH & CO
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