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

Inventor： SMITH DENNIS J ,  OLSON RANDALL C ,  KRUSE STEVEN D

IPC: G01F23/284 ,  G01F23/292

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.

公开(公告)号：AU4664197A

公开(公告)日：1998-04-24

申请号：AU4664197

申请日：1997-10-01

Applicant: ROSEMOUNT INC

Inventor： SMITH DENNIS J

IPC: G01F23/284 ,  G01L19/14

公开(公告)号：DE19782057T1

公开(公告)日：1999-09-02

申请号：DE19782057

申请日：1997-10-01

Applicant: ROSEMOUNT INC

Inventor： SMITH DENNIS J

IPC: G01F23/284 ,  G01L19/14

公开(公告)号：CA2267554A1

公开(公告)日：1998-04-09

申请号：CA2267554

申请日：1997-10-01

Applicant: ROSEMOUNT INC

Inventor： SMITH DENNIS J

IPC: G01F23/284 ,  G01L19/14 ,  G01D11/24 ,  H01R13/533

Abstract: An explosion proof electrical feedthrough assembly is provided in a process variable transmitter (10) which has a sensor (32) sensing a process variable and providing a sensor output signal indicative of the process variable. The transmitter (10) also includes a processing circuit (18) coupled to the sensor (32) to receive the sensor output signal and provide a transmitter output signal based on the sensor output signal. The feedthrough assembly includes a terminal block (20) which is coupled to the processing circuit (18) and includes power supply terminal connectors (54, 56) and communication signal connectors (40, 42). The communication signal connectors (40, 42) are arranged generally radially about the power supply terminal connectors (54, 56).

公开(公告)号：DE19782057B4

公开(公告)日：2006-10-26

申请号：DE19782057

申请日：1997-10-01

Applicant: ROSEMOUNT INC

Inventor： SMITH DENNIS J

IPC: G01D5/12 ,  G01F23/284 ,  G01L19/14

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

Inventor： SMITH DENNIS J ,  OLSON RANDALL C ,  KRUSE STEVEN D

IPC: G01F23/284 ,  G01F23/292

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.

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

Inventor： SMITH DENNIS J ,  KRUSE STEVEN D ,  OLSON RANDALL C

IPC: G01F23/284 ,  G01F23/292

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).

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

Inventor： SMITH DENNIS J ,  OLSON RANDALL C ,  KRUSE STEVEN D

IPC: G01F23/284 ,  G01F23/292 ,  H01P1/08

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...