Potentiometric sensor element and method for producing same
First Claim
1. A potentiometric sensor element comprising:
- a measuring element; and
a shield housing permanently secured to the measuring element and accommodating an electronic sensor unit therein sealed off against external influences, wherein;
the electronic sensor unit is connected to a contactless interface adapted to exchange energy and signals with a corresponding contactless interface in an electronic base unit;
the shield housing includes an outer sleeve and an inner sleeve accommodated in the outer sleeve, the electronic sensor unit being within the inner sleeve and surrounded by a first casting compound such that the inner sleeve with the electronic sensor unit and first casting compound form a filled inner element of the shield housing; and
the filled inner element is permanently bonded to the outer sleeve by a second casting compound which is different from the first casting compound.
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Accused Products
Abstract
The potentiometric sensor element comprises a measuring element and a shield housing permanently bonded to the measuring element, in which housing an electronic sensor unit is accommodated and which is sealed off against external influences. The electronic sensor unit is connected to a contactless interface adapted to exchange energy and signals with a corresponding contactless interface in an electronic base unit. The shield housing comprises an outer sleeve and an inner sleeve, accommodated within the outer sleeve, wherein the electronic sensor unit is accommodated in the inner sleeve and is surrounded there by a first casting compound. The filled inner sleeve is in turn bonded permanently to the outer sleeve by means of a second casting compound, which is different from the first casting compound.
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Citations
14 Claims
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1. A potentiometric sensor element comprising:
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a measuring element; and a shield housing permanently secured to the measuring element and accommodating an electronic sensor unit therein sealed off against external influences, wherein; the electronic sensor unit is connected to a contactless interface adapted to exchange energy and signals with a corresponding contactless interface in an electronic base unit; the shield housing includes an outer sleeve and an inner sleeve accommodated in the outer sleeve, the electronic sensor unit being within the inner sleeve and surrounded by a first casting compound such that the inner sleeve with the electronic sensor unit and first casting compound form a filled inner element of the shield housing; and the filled inner element is permanently bonded to the outer sleeve by a second casting compound which is different from the first casting compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for producing a potentiometric sensor element having a measuring element and a shield housing permanently secured thereto, the shield housing accommodating an electronic sensor unit therein sealed off against external influences, comprising the steps of:
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providing the measuring element; arranging an inner sleeve of the shield housing around the electronic sensor unit and permanently bonding the inner sleeve to the measuring element; filling the inner sleeve with a first casting compound and curing the first casting compound thereby to form a filled inner element comprised of the inner sleeve with the electronic sensor unit and first casting compound accommodated within it, the first casting compound surrounding the electronic sensor; using a second casting compound different from the first casting compound to fill an outer sleeve of the shield housing, the outer sleeve being open at one end; introducing the filled inner element into the outer sleeve; and curing the second casting compound to thereby permanently bond the filled inner element to the outer sleeve. - View Dependent Claims (14)
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Specification