IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0107855
(2005-04-18)
|
등록번호 |
US-7406865
(2008-08-05)
|
발명자
/ 주소 |
- Klees,Dan
- Vermeulen,Rob
- Bryant,Lewis
|
출원인 / 주소 |
- Endress + Hauser GmbH + Co. KG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
2 |
초록
▼
A level measurement arrangement for measurement of a level of a product in a container comprising: a level sensor, comprising: a conductive probe, a mounting element, comprising, and a process connector, for mounting the mounting element on a ferrule on the container, is described, wherein electrica
A level measurement arrangement for measurement of a level of a product in a container comprising: a level sensor, comprising: a conductive probe, a mounting element, comprising, and a process connector, for mounting the mounting element on a ferrule on the container, is described, wherein electrical isolation of the conductive probe from the ferrule is ensured via a dielectric insert, which is inserted in the ferrule, fills all cavities inside the ferrule, and extends through the ferrule into the container.
대표청구항
▼
What is claimed is: 1. A level measurement arrangement for measurement of a level of a product in a container based on the time of flight needed for electromagnetic pulses to travel down a probe to a surface of the product and its echo to return, comprising: a ferrule comprising a tubular stud encl
What is claimed is: 1. A level measurement arrangement for measurement of a level of a product in a container based on the time of flight needed for electromagnetic pulses to travel down a probe to a surface of the product and its echo to return, comprising: a ferrule comprising a tubular stud enclosing an opening of the container, extending from the container and defining a process connector; a level sensor, comprising: a conductive probe, and a mounting element; and a dielectric insert, inserted in the ferrule, filling all cavities inside the ferrule, and extending through the ferrule into the container, wherein: said mounting element being mounted to said ferrule by said process connector; said conductive probe extends from said mounting element through said dielectric insert into the container; and said dielectric insert being so mounted to thereby insure electrical insulation between said conductive probe and said ferrule. 2. The level measurement arrangement according to claim 1, wherein: said dielectric insert has an insertion length, which is greater than an insertion length of said ferrule. 3. The level measurement arrangement according to claim 1, wherein: said dielectric insert extends into the container, past an end of the ferrule facing into the container. 4. The level measurement arrangement according to claim 1, wherein: the dielectric insert comprises a conical tip, which surrounds said conductive probe and points into the container. 5. The level measurement arrangement according to claim 1, wherein: said dielectric insert includes an outer thread used for threading said dielectric insert into said ferrule. 6. The level measurement arrangement according to claim 1, wherein: said process connector is a threaded coupling; and said dielectric insert includes an inner thread, such that said mounting element can be screwed onto said dielectric insert. 7. The level measurement arrangement according to claim 1, wherein: said dielectric insert comprises an outer rim, which is clamped between said process connector of said mounting element and a mating counter connector on said ferrule. 8. The level measurement arrangement according to claim 1, wherein: said level sensor further comprises a sensor electronic comprising: means for generating and sending short electromagnetic pulses (S) down the conductive probe; means for reception of echoes (E) of the pulses (S) reflected at a surface of the product; and means for determining the level of the product in the container, based on a time of flight (t) needed for a pulse (S) to travel down said conductive probe, and its echo (E) to return. 9. The level measurement arrangement according to claim 1, wherein: said level sensor comprises a further process connector, for mounting said mounting element to said dielectric insert.
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