Invention Publication
- Patent Title: VERFAHREN ZUR FÜLLSTANDSMESSUNG
- Patent Title (English): Method for filling level measurement
- Patent Title (中): 方法液位测量
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Application No.: EP08861326.0Application Date: 2008-12-12
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Publication No.: EP2223059A1Publication Date: 2010-09-01
- Inventor: MALINOVSKIY, Alexey , SCHROTH, Herbert , SPANKE, Dietmar
- Applicant: Endress + Hauser GmbH + Co. KG.
- Applicant Address: Hauptstrasse 1 79689 Maulburg DE
- Assignee: Endress + Hauser GmbH + Co. KG.
- Current Assignee: Endress + Hauser GmbH + Co. KG.
- Current Assignee Address: Hauptstrasse 1 79689 Maulburg DE
- Agency: Andres, Angelika Maria
- Priority: DE102007061574 20071218
- International Announcement: WO2009077434 20090625
- Main IPC: G01F23/00
- IPC: G01F23/00 ; G01F23/26 ; G01F23/284

Abstract:
A method for filling level measurement is disclosed, using which, in a container (1), in which a first and/or a second filling product (3, 5) can be located, for each filling product (3, 5) contained in the container (1), a rest location can be determined, which corresponds to the location which the filling product surface of the particular filling product (3, 5) assumes because of the quantity of the first filling product (3) which is contained in the container (1) and the quantity of the second filling product (5) which is contained in the container (1), if the total quantity of each filling product (3, 5) in the container (1) forms a single layer containing only this filling product (3, 5), wherein said first filling product (3) has a lower specific weight than said second filling product (5), and said two filling products (3, 5) have different dielectric constants (ε), wherein an electromagnetic signal (S) is transmitted into said container (1), a reflection occurs on at least one media boundary generated by said filling products (3, 5) contained in said container (1), wherein a component (Rx, Ry) of said signal (S) is reflected, and for each reflected component (Rx, Ry), a run time (Tx, Ty), which is a function of the location of the media boundary triggering the reflection, is measured, which said component (Rx, Ry) of the signal (S) requires for the route to this media boundary and back, a capacitance (C), which is a function of the quantities of the filling products (3, 5) located in the container (1), is measured between a capacitive probe (13) and a reference electrode (15), and the rest location of said filling product surface is determined for each filling product (3, 5), which is, contained in the container (1), on the basis of the measured capacitance (C) and the measured runtimes (Tx, Ty).
Public/Granted literature
- EP2223059B1 VERFAHREN ZUR FÜLLSTANDSMESSUNG Public/Granted day:2017-04-12
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