Ptfe window seal with emi shielding

    公开(公告)号:AU1613800A

    公开(公告)日:2000-06-05

    申请号:AU1613800

    申请日:1999-11-10

    Applicant: ROSEMOUNT INC

    Abstract: A process seal made of a material such as polytetrafluoroethylene is used as a microwave window in a radar tank level gauge. The periphery of the process seal is surrounded by a metal containment ring that is fitted to the periphery to limit the amount of expansion outwardly of the process seal material as well as provide for localized loading at the periphery for clamping pressures on the seal. Electromagnetic radiation shielding is provided not only by the containment ring, but also by an EMI shielding O-ring mounted in a groove on a sealing end of the containment ring. A process environmental O-ring is carried by the process seal in an outer shoulder groove that is enclosed by the containment ring.

    PTFE WINDOW SEAL WITH EMI SHIELDING

    公开(公告)号:CA2317427A1

    公开(公告)日:2000-05-25

    申请号:CA2317427

    申请日:1999-11-10

    Applicant: ROSEMOUNT INC

    Abstract: A process seal (30) made of a material such as polytetrafluorethylene is used as a microwave window (31) in a radar tank level gauge (16). The periphery (32) of the process seal is surrounded by a metal containment ring (40) that is fitted to the periphery to limit the amount of expansion outwardly of the process seal material as well as provide for localized loading at the periphery for clamping pressures on the seal (30). Electromagnetic radiation shielding is provided not only by the containment ring (40), but also by an EMI shielding O-ring (46) mounted in a groove on a sealing end of the containment ring. A process environmental O-ring (41) is carried by the process seal (30) in an outer shoulder groove that is enclosed by the containment ring (40).

    PTFE-Fensterdichtung mit EMB-Abschirmung

    公开(公告)号:DE19982569B3

    公开(公告)日:2011-09-29

    申请号:DE19982569

    申请日:1999-11-10

    Applicant: ROSEMOUNT INC

    Abstract: Mit isolierender Prozeßfensterdichtung versehene und für Mikrowellenenergie durchlässige Anordnung zum Bestimmen des Füllstands eines Materials in einem Behälter mit einer Öffnung in einer Oberseite, wobei die Öffnung von einer Begrenzungsfläche umgeben ist, mit: einem mikrowellendurchlässigen Dichtungsteil mit einer solchen Größe, daß es die Öffnung eines Behälters verschließt, und mit einem Dichtungsteilflansch mit einer solchen Größe, daß er auf der Begrenzungsfläche eines Behälters gestützt wird, wobei Mikrowellenenergie durch das Dichtungsteil durchgelassen wird; einem ersten Ring aus gegen elektromagnetische Beeinflussung (EMB) abschirmendem Material, der einen Umfang des Dichtungsteilflansches umgibt und eine solche Höhe hat, daß er eine Kante des Dichtungsteilflansches umschließt, wobei der erste Ring eine Fläche aufweist, die so positioniert ist, daß sie zur Begrenzungsfläche der Öffnung des Behälters weist, wobei eine in der Fläche des ersten Ringes ausgebildete Nut den Dichtungsteilflansch umgibt; und einem elastischen zweiten Ring aus Material, das gegen elektromagnetische Beeinflussung abschirmt, der in der...

    4.
    发明专利
    未知

    公开(公告)号:DE19982569T1

    公开(公告)日:2001-01-04

    申请号:DE19982569

    申请日:1999-11-10

    Applicant: ROSEMOUNT INC

    Abstract: A process seal made of a material such as polytetrafluoroethylene is used as a microwave window in a radar tank level gauge. The periphery of the process seal is surrounded by a metal containment ring that is fitted to the periphery to limit the amount of expansion outwardly of the process seal material as well as provide for localized loading at the periphery for clamping pressures on the seal. Electromagnetic radiation shielding is provided not only by the containment ring, but also by an EMI shielding O-ring mounted in a groove on a sealing end of the containment ring. A process environmental O-ring is carried by the process seal in an outer shoulder groove that is enclosed by the containment ring.

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