EP0149279A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Level gauge
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1984-12-17
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Granted: —
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Expires: 2004-12-17
Abstract
Abstract A device for determining the position of an interface between different fluids in a tank or container, comprising a plurality of cells, placed one below another and mounted on a structure which is placed in the tank or container. Each cell consists of three electrically conductive elements, isolated from each other. The first element of each cell is adapted to be connected to an AC signal generating means, the third element of each cell is adapted to be connected to zero potential, and the second element of each cell is adapted to be connected to a signal detecting means for detecting the transmitted AC signal.
Inventors
- 👤 Klaas Spaargaren
- 👤 Adrianus Cornelus Wilhelmus Leyen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:44
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
A device for determining the position of an interface between different fluids in a tank or container, comprising a plurality of cells, placed one below another and mounted on a structure which is placed in the tank or container, each cell consisting of three electrically conductive elements, isolated from each other, the first element of each cell being adapted to be connected to an AC signal generating means, the third element of each cell being adapted to be connected to zero potential, and the second element of each cell being adapted to be connected to a signal detecting means for detecting the transmitted AC signal.
Claim 2
Independent Claim
105 words
A device for determining the position of an interface between different fluids in a tank or container, comprising a plurality of cells, placed one below another and mounted on a structure which is placed in the tank or container, each cell consisting of three electrically conductive elements, isolated from each other, the first element of each cell being adapted to be connected to an AC signal generating means, the third element of each cell being adapted to be connected to zero potential, and the second element of each cell being adapted to be connected to a signal detecting means for detecting the transmitted AC signal.
Claim 3
Dependent Claim
21 words
The device as claimed in claim 1 wherein the said three conductive elements of each cell are arranged in a U-form.
Claim 4
Dependent Claim
20 words
The device as claimed in claim 1 or 2 wherein the three conductive elements of each cell are plane elements.
Claim 5
Independent Claim
25 words
The device as claimed in any one of claims 1-3 wherein the cell has a height of 7 mm and a width of 8 mm.
Claim 6
Dependent Claim
24 words
The device as claimed in claim 4 wherein two elements of the cell are situated opposite each other, thus forming a gap between them.
Claim 7
Dependent Claim
13 words
The device as claimed in claim 5 wherein the gap is 5 mm.
Claim 8
Independent Claim
20 words
The device as claimed in any one of claims 1-6 wherein the vertical distance between the cells is 1 mm.
Claim 9
Independent Claim
26 words
The device as claimed in any one of claims 1-7 comprising means for deriving information about the position of said interface from the detected AC signals.
Claim 10
Independent Claim
30 words
The device as claimed in any one of claims 1-8 comprising switch means adapted to connect the said first elements of each cell to the said AC signal generating means.
Claim 11
Dependent Claim
15 words
The device as claimed in claim 9 wherein the said switch means are shift registers.
Claim 12
Independent Claim
39 words
The device as claimed in any one of claims 1-10 wherein the said second elements of the cells are connected in such a way that they consist of one long plate extended over the whole length of the device.
Claim 13
Independent Claim
32 words
The device as claimed in any one of claims 1-11 wherein the said third elements of the cells are connected in such a way that they consist of one long metal bar.
References Cited (Backward Citations)
No citation records indexed.
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