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21. 发明授权

EP0741906B1 LOW COST, CENTER-MOUNTED CAPACITIVE PRESSURE SENSOR 失效
标题翻译： CHEAPER中央安装式电容式压力转换器
公开(公告)号：EP0741906B1
公开(公告)日：2000-06-21
申请号：EP95907484.0
申请日：1995-01-20
申请人： SETRA SYSTEMS, INC.
发明人： LEE, Shih-Ying
IPC分类号： H01G7/00 , G01L9/00 , G01L1/14
CPC分类号： G01L9/0072
摘要： A variable capacitance type pressure sensor (10) with excellent manufacturability center-mounts an electrode (20) on an edge-mounted diaphragm (16) using a metal-glass-metal subassembly (18). An inner metal post (28) of the assembly is welded to the diaphragm (16). A solder or flowable cement (36) secures the electrode (20) to an outer metal collar (32) of the assembly (18) with the initial diaphragm-to-electrode spacing (38) set by a temporary shim (40). The position of the glass (30) and the physical lengths of the metallic members (28, 32) of the assembly are adjusted to provide self-compensation for temperature variations.

22. 发明公开

EP0830577A4 MAGNETIC RELATIVE POSITION TRANSDUCER 失效
标题翻译：磁压转换器
公开(公告)号：EP0830577A4
公开(公告)日：1998-05-20
申请号：EP96916992
申请日：1996-06-03
申请人： SETRA SYSTEMS INC
发明人： BRIEFER DENNIS K , PINTO GINO A
IPC分类号： G01L13/06 , G01D5/20 , G01L1/14 , G01L9/00 , G01L9/10
CPC分类号： G01L9/007 , G01D5/202 , G01L1/14
摘要： A differential pressure transducer includes a pair of interior chambers (12, 14) separated by supported, nominally planar electrically conductive diaphragm (16). A magnetic assembly is positioned on at least one chamber wall opposite an electrical conductor.

23. 发明公开

EP0741906A4 LOW COST, CENTER-MOUNTED CAPACITIVE PRESSURE SENSOR 失效
标题翻译： CHEAPER中央安装式电容式压力转换器
公开(公告)号：EP0741906A4
公开(公告)日：1998-04-15
申请号：EP95907484
申请日：1995-01-20
申请人： SETRA SYSTEMS INC
发明人： LEE SHIH-YING
IPC分类号： G01L1/14 , G01L9/00 , G01L9/12 , H01G5/16 , H01G7/00
CPC分类号： G01L9/0072
摘要： A variable capacitance type pressure sensor (10) with excellent manufacturability center-mounts an electrode (20) on an edge-mounted diaphragm (16) using a metal-glass-metal subassembly (18). An inner metal post (28) of the assembly is welded to the diaphragm (16). A solder or flowable cement (36) secures the electrode (20) to an outer metal collar (32) of the assembly (18) with the initial diaphragm-to-electrode spacing (38) set by a temporary shim (40). The position of the glass (30) and the physical lengths of the metallic members (28, 32) of the assembly are adjusted to provide self-compensation for temperature variations.

24. 发明公开

EP0714505A4 CAPACITIVE PRESSURE SENSOR 失效
标题翻译：电容式压力转换器
公开(公告)号：EP0714505A4
公开(公告)日：1997-02-26
申请号：EP94925923
申请日：1994-08-12
申请人： SETRA SYSTEMS INC
发明人： LEE SHIH-YING
IPC分类号： G01L9/12 , G01L9/00 , G01L7/08 , G01L7/12
CPC分类号： G01L9/0072
摘要： A capacitive pressure sensor (10) includes a conductive diaphragm (20) positioned between two pneumatically separate chambers (60, 64). The diaphragm is supported at its periphery by a concave base member (30). An electrode assembly (40) establishes a substantially planar conductive surface (42a) opposite to, and spaced apart by a nominal gap from, the conductive diaphragm. The electrode assembly includes the conductive surface and a single support element (44) secured to, and extending through the base member. A glass dielectric (46) fixes the support element to a collar (48) which may be welded, brazed, or soldered to the base member. The glass dielectric provides both mechanical support and high quality electric insulation between the electrode and the housing. By prefabricating the electrode support element with the collar and securing the collar to the housing after the dielectric has cured, problems associated with thermal expansion are avoided and the dimension of the nominal gap may be precisely controlled at low cost.

25. 发明公开

EP0714505A1 CAPACITIVE PRESSURE SENSOR 失效
标题翻译：电容式压力转换器
公开(公告)号：EP0714505A1
公开(公告)日：1996-06-05
申请号：EP94925923.0
申请日：1994-08-12
申请人： SETRA SYSTEMS, INC.
发明人： LEE, Shih-Ying
IPC分类号： G01L9
CPC分类号： G01L9/0072
摘要： A capacitive pressure sensor (10) includes a conductive diaphragm (20) positioned between two pneumatically separate chambers (60, 64). The diaphragm is supported at its periphery by a concave base member (30). An electrode assembly (40) establishes a substantially planar conductive surface (42a) opposite to, and spaced apart by a nominal gap from, the conductive diaphragm. The electrode assembly includes the conductive surface and a single support element (44) secured to, and extending through the base member. A glass dielectric (46) fixes the support element to a collar (48) which may be welded, brazed, or soldered to the base member. The glass dielectric provides both mechanical support and high quality electric insulation between the electrode and the housing. By prefabricating the electrode support element with the collar and securing the collar to the housing after the dielectric has cured, problems associated with thermal expansion are avoided and the dimension of the nominal gap may be precisely controlled at low cost.

26. 发明公开

EP0438413A4 HUMIDITY CONTROL SYSTEM FOR A SCALE 失效
标题翻译：用于规模的湿度控制系统
公开(公告)号：EP0438413A4
公开(公告)日：1991-10-30
申请号：EP89907566
申请日：1989-06-12
申请人： SETRA SYSTEMS, INC.
发明人： LI, DA, KE
IPC分类号： G01G3/00 , G01G7/06 , G01G23/00 , G01G3/14
CPC分类号： G01G23/00 , G01G7/06

27. 发明公开

EP0438413A1 HUMIDITY CONTROL SYSTEM FOR A SCALE 失效
标题翻译：湿度监控系统规模。
公开(公告)号：EP0438413A1
公开(公告)日：1991-07-31
申请号：EP89907566.0
申请日：1989-06-12
申请人： SETRA SYSTEMS, INC.
发明人： LI, Da, Ke
IPC分类号： G01G3 , G01G7 , G01G23
CPC分类号： G01G23/00 , G01G7/06
摘要： L'humidité relative de l'air présent à l'intérieur d'un logement d'une balance (10), utilisant un transducteur capacitif (16) monté à l'intérieur du logement, est régulée par une combinaison de (i) un joint d'étanchéité (34) partiellement mécanique du logement résistant à un écoulement d'humidité à travers le joint d'étanchéité, et (ii) une alimentation (42) en agent desséchant situé à l'intérieur du logement lequel à la fois absorbe et désorbe l'humidité de l'air. Le joint d'étanchéité (34) partiel est situé au niveau d'une ouverture (18) se trouvant dans le logement, destinée à un axe (20) supportant un plateau (22) de pesage extérieur au logement. L'agent desséchant (42) est du gel de silice. Les valeurs de résistance d'écoulement et d'amenée d'agent desséchant produisent un changement très lent dans le temps, en général plusieurs années. L'humidité relative à l'intérieur du logement varie dans une plage de +5 % d'une valeur d'état stable malgré de plus amples variations dans la température et l'humidité de l'air environnant le logement.

28. 发明公开

EP0431067A1 TEMPERATURE STABLE OSCILLATOR 失效
标题翻译：下稳定OSC。
公开(公告)号：EP0431067A1
公开(公告)日：1991-06-12
申请号：EP89910359.0
申请日：1989-08-17
申请人： SETRA SYSTEMS, INC.
发明人： BRIEFER, Dennis, K.
IPC分类号： H03B5 , H03L1
CPC分类号： H03L1/02 , H03B5/04 , H03B5/1203 , H03B5/1231 , H03B2200/0034 , H03B2200/0048 , H03B2200/0056
摘要： On a mis au point un oscillateur (10) comprenant un premier réseau (12) de commande de fréquence, comportant une inductance (21) et un condensateur de capteur (CS1) couplés en série, une paire de condensateurs (C1 et C2) en cascade, auxquels est couplé un amplificateur émittodyne (18). L'amplificateur émittodyne (18) excite un limiteur de courant (20) ainsi qu'un chemin de rétroaction (22), le courant passant dans l'amplificateur émittodyne (18) étant divisé entre le limiteur de courant (20) et le chemin de rétroaction (22) d'une manière établissant un potentiel oscillatoire dans l'oscillateur (10), tout en gardant le transistor (Q1) de l'amplificateur émittodyne (18) sensiblement hors de son état de saturation.

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