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公开(公告)号：AU7720200A
公开(公告)日：2001-04-30
申请号：AU7720200
申请日：2000-09-26
Applicant: ROSEMOUNT INC
Inventor： BEHM STEVEN M , KRUEGER WILLIAM B , ORTH KELLY M , BREKKEN JEFFREY C
Abstract: A pressure transmitter with a transmitter housing having an outer wall providing thermal resistance. The outer wall extends from an isothermal island at a first end to a heat sink island at a second end. The isothermal island includes a fluid inlet, and pressure and temperature sensors. The heat sink island includes a primary heat load device that is heat sunk to an outer shell of an electrical connector. The connector contacts carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device. A circuit board controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.
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公开(公告)号：CA2141688A1
公开(公告)日：1994-03-17
申请号：CA2141688
申请日：1993-08-30
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate assembly mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause a center diaphragm section to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate so that when the diaphragm is deflected toward the base plate under high over-pressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accomodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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公开(公告)号：DE19882223B4
公开(公告)日：2007-09-06
申请号：DE19882223
申请日：1998-03-24
Applicant: ROSEMOUNT INC
Inventor： SUNDET PAUL C , KRUEGER WILLIAM B
Abstract: A process instrument mount includes an outer wall and an inner wall. The outer wall is separated from the inner wall by a space. The mount has a first end and a second end, and a hole extends from the first end to the second end. The inner wall surrounds the hole, and has a threaded region to receive a process instrument from the first end. The inner wall also has a flange proximate the second end to sealingly mate with the process instrument. In one embodiment the inner and outer walls are portions of a unitary metal block, and the space separating them comprises a groove formed in the metal. In another embodiment the inner and outer walls are separate parts joined together at the second end and spaced apart between the first and second ends.
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公开(公告)号：FI19992060A
公开(公告)日：1999-09-27
申请号：FI19992060
申请日：1999-09-27
Applicant: ROSEMOUNT INC
Inventor： KRUEGER WILLIAM B , SUNDET C PAUL
Abstract: A process instrument mount includes an outer wall and an inner wall. The outer wall is separated from the inner wall by a space. The mount has a first end and a second end, and a hole extends from the first end to the second end. The inner wall surrounds the hole, and has a threaded region to receive a process instrument from the first end. The inner wall also has a flange proximate the second end to sealingly mate with the process instrument. In one embodiment the inner and outer walls are portions of a unitary metal block, and the space separating them comprises a groove formed in the metal. In another embodiment the inner and outer walls are separate parts joined together at the second end and spaced apart between the first and second ends.
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公开(公告)号：AU4841293A
公开(公告)日：1994-03-29
申请号：AU4841293
申请日：1993-08-30
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause the diaphragm to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate, so that when the diaphragm is deflected toward the base plate under high overpressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accommodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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Patent Agency Ranking
公开(公告)号：BR0014360A
公开(公告)日：2002-06-11
申请号：BR0014360
申请日：2000-09-26
Applicant: ROSEMOUNT INC
Inventor： BEHM STEVEN M , KRUEGER WILLIAM B , ORTH KELLY M , BREKKEN JEFFREY C
Abstract: A pressure transmitter with a transmitter housing having an outer wall providing thermal resistance. The outer wall extends from an isothermal island at a first end to a heat sink island at a second end. The isothermal island includes a fluid inlet, and pressure and temperature sensors. The heat sink island includes a primary heat load device that is heat sunk to an outer shell of an electrical connector. The connector contacts carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device. A circuit board controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.
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公开(公告)号：AU680430B2
公开(公告)日：1997-07-31
申请号：AU4841293
申请日：1993-08-30
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause the diaphragm to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate, so that when the diaphragm is deflected toward the base plate under high overpressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accommodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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公开(公告)号：NO950777D0
公开(公告)日：1995-02-28
申请号：NO950777
申请日：1995-02-28
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause the diaphragm to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate, so that when the diaphragm is deflected toward the base plate under high overpressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accommodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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公开(公告)号：FI950912A0
公开(公告)日：1995-02-28
申请号：FI950912
申请日：1995-02-28
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause the diaphragm to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate, so that when the diaphragm is deflected toward the base plate under high overpressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accommodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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公开(公告)号：FI950912A
公开(公告)日：1995-02-28
申请号：FI950912
申请日：1995-02-28
Applicant: ROSEMOUNT INC
Inventor： LUTZ MARK A , KRUEGER WILLIAM B
Abstract: A low range pressure sensor includes a base plate of brittle material, and a diaphragm plate mounted on the base plate and sealed around a periphery to the base plate. Pressures are introduced to cause the diaphragm to deflect toward the base plate, and the deflection of the diaphragm is sensed through strain gauges to provide an indication of the pressure. The diaphragm is provided with a plurality of individual support posts on a side facing the base plate, so that when the diaphragm is deflected toward the base plate under high overpressures the support posts will support the diaphragm against movement to avoid failure or breakage of the diaphragm. The number of support posts can be varied as desired. In a preferred form of the invention, the base plate is provided with a very thin layer of silicon dioxide, which is a good electrical insulator and which also serves to help accommodate slight movement of the support posts as they touch the surface of the base plate to reduce stress buildup in the diaphragm as the overpressure increases.
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