Capacitive level probe

A level meter, capacitive technology, applied to the liquid level indicator, measuring device, instrument and other directions of physical variable measurement, can solve the problems of high manufacturing cost, reduce storage space, enhance mechanical performance, and simplify manufacturing.

Inactive Publication Date: 2009-10-28
GESTRA AKTIENGES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A disadvantage of this type of level gauge is that the channel enables interconnection between the interior of the container in which the liquid medium whose fill level is to be measured is arranged and the external space of this container
Higher manufacturing cost is also a disadvantage since the electrodes are hollow inside and have a branched channel structure

Method used

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Examples

Experimental program
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Embodiment Construction

[0051] figure 1 A level gauge 10 according to the prior art is illustrated. The level gauge includes an electrode 12 , a connecting portion 14 and an insulating sleeve 16 . The electrodes 12 protrude into a container 18 with a liquid medium (not shown), the filling level of which is to be determined. The fill level of the liquid medium at the maximum fill level is indicated by arrow 20 . The electrode 12 comprises a substantially cylindrical metal tube radially completely surrounded by an insulating sleeve 16 .

[0052] In the lowest position, that is to say at the point where the fluid immersion ends last as the filling height decreases, the insulating sleeve 16 is welded to the closing part 22 in such a way that the insulating sleeve 16 is pressure-tight.

[0053] The insulating sleeve 16 extends partially around the connection portion 14 and substantially completely surrounds the electrode 12 .

[0054] figure 2 A level gauge 10 according to the invention is illustrat...

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Abstract

The invention relates to a capacitive level gauge, especially a level gauge for measuring the filling height of a liquid medium, the level gauge comprises a connection part (14), is connected to the connection part (14) and protrudes from the connection part (14 ) and includes the electrode (12) of the sensor element (28), the insulating sleeve (16) that completely surrounds the sensor element (28) radially, wherein the insulating sleeve (16) wraps the electrode (12) in the contact area (30) , when the pressure drops between the contact area (30) and the area surrounding the level gauge (10), the flow path (51) of the gas (56) present in the contact area (30) outside the contact area (30) outflow contact area (30). According to the invention, the flow path extends through at least one opening (32) in the insulating sleeve (16) or completely between the electrode (12) and the insulating sleeve (16). The invention also relates to a container for liquid media with such a level gauge.

Description

technical field [0001] The invention relates to a capacitive level gauge, especially a capacitive level gauge for measuring the filling height of a liquid medium. The capacitive level gauge comprises: a connecting part; an electrode connected to the connecting part and Protrudes from this connection part, and comprises sensor element; And insulating sleeve, and this insulating sleeve radially completely surrounds sensor element; Wherein insulating sleeve wraps electrode in contact area, and wherein the design of electrode and insulating sleeve makes When the pressure drops between the contact area and the area surrounding the level gauge, the gas present in the contact area flows out of the contact area via a flow path leading to the outside of the contact area. [0002] Another aspect according to the invention relates to a container for a liquid medium. Background technique [0003] It is well known that capacitive level gauges are used to measure the fill level of liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/26
CPCG01F23/268G01F23/263
Inventor H·施勒特尔K·博尔歇斯A·库尔曼
Owner GESTRA AKTIENGES
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