公开(公告)号：US11953388B2

公开(公告)日：2024-04-09

申请号：US16972929

申请日：2019-05-13

Applicant: ALLEIMA TUBE AB

Inventor： Gustaf Sjöblom ,  Anthony Ewert

IPC: G01L1/22 ,  G01K7/02 ,  G01K13/024 ,  G01L1/14

CPC classification number: G01L1/2206 ,  G01K7/02 ,  G01K13/024 ,  G01L1/142

Abstract: Metallic tube structure comprises a first tubular portion and a sensor structure. A sensor of the sensor structure is configured to detect a physical parameter of the metallic tube structure. The sensor structure is formed as a stack of thin-film layers. The stack comprises at least a first electrically insulating thin-film layer and at least one electrically conducting thin-film layer. The first electrically insulating thin-film layer is in mechanically bonded to the outer surface of the first tubular portion and is arranged to electrically insulate the at least one electrically conducting thin-film layer from the first tubular portion. A portion of the sensor structure is covered by a protective member, the protective member being arranged in direct contact with the at least a portion of the sensor structure and at least a part of the first tubular portion.

公开(公告)号：US11927492B2

公开(公告)日：2024-03-12

申请号：US17111716

申请日：2020-12-04

Applicant: Alleima Tube AB

Inventor： Gustaf Sjöblom ,  Guoliang Wang

IPC: G01K7/13 ,  G01L1/22

CPC classification number: G01K7/13 ,  G01L1/2281

Abstract: A sensor includes a metal object and a thin film stack formed on at least a part of a surface of the metal object. The thin film stack has an electrically isolating film and a metallic film thereon. A first electrical conductor is defined in the metallic film and is electrically isolated from the metal object and has, in a first end, a connection point connected to a first terminal via a wire and, in a second end, a sensor structure defined in the metallic film. The sensor structure includes a junction of the metallic film penetrating the electrically isolating film to the metal object forming a thermocouple and a metal object terminal connected to a connection point of the metal object via a wire. The connection points of the first electrical conductor and of the metal object are adjacent to and in an isothermal relation with each other.