公开(公告)号：EP1214633A1

公开(公告)日：2002-06-19

申请号：EP00963693.7

申请日：2000-09-22

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A. ,  TEWFIK, Ahmed, H.

IPC分类号： G05B23/02 ,  G05B19/418

CPC分类号： G01F1/42 ,  G01F25/0007 ,  G05B19/0423 ,  G05B2219/31126 ,  G05B2219/34084 ,  G05B2219/34142 ,  G05B2219/37401

摘要： A transmitter (10) for measuring a process variable includes a sensor (102) configured to couple to a process and having a sensor output (120) related to the process variable. A microprocessor (106) coupled to the sensor output (120) provides a process variable output which is a function of an orthogonal-polynomial of the sensor output (120). A transmitter output is configured to provide an output related to the process variable.

公开(公告)号：EP0374161A1

公开(公告)日：1990-06-27

申请号：EP88906310.0

申请日：1988-06-02

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A.

IPC分类号： G01W1 ,  B64D15 ,  G08B19

CPC分类号： B64D15/20 ,  G08B19/02

摘要： Une sonde de détection de glace (10) détecte un dépôt de glace à partir d'une masse d'air s'écoulant par rapport à la sonde (10). La sonde (10) comprend un support (12) pour monter la sonde (10) et lui permettre de recevoir le flux d'air, ainsi qu'un élément (30) formé sur un substrat ayant une surface de détection (32) qui reçoit directement le flux d'air. L'élément (30) chauffe la surface de détection (32) pour faire fondre un dépôt de glace qui s'y est formé. L'élément (30) détecte également la température de la surface de détection pendant le chauffage et fournit un signal de sortie représentatif de cette température.

公开(公告)号：EP2676065B1

公开(公告)日：2019-07-31

申请号：EP12706741.1

申请日：2012-02-07

申请人： Rosemount Inc.

发明人： KLEVEN, Lowell, A.

IPC分类号： G01N29/04 ,  G01N29/22 ,  G01N29/24 ,  G01N29/28 ,  G01N29/32 ,  F16T1/48 ,  G01N29/14

公开(公告)号：EP2347224A1

公开(公告)日：2011-07-27

申请号：EP09748192.3

申请日：2009-10-27

申请人： Rosemount, Inc.

发明人： KLEVEN, Lowell, A. ,  WIKLUND, David, E.

IPC分类号： G01F1/34 ,  G05D7/06

CPC分类号： G01F1/363 ,  G01F1/50 ,  G01F1/88

摘要： A process fluid flow device (12) includes process communication circuitry (20), a processor (26), and measurement circuitry (28). The process communication circuitry (20) is configured to communicate with at least one additional process device. The processor (26) is coupled to the process communication circuitry (20) and is configured to execute instructions to provide a plurality of cycles, wherein each cycle includes a number of flow- related calculations. Measurement circuitry (28) is operably coupleable to a plurality of process variable sensors to obtain an indication of differential pressure during each cycle, and to obtain static pressure, and process fluid temperature. The processor (26) is configured to compute a process fluid flow value using a current differential pressure sensor indication and at least one flow-related value calculated during a previous cycle. The process communication circuitry (20) communicates the computed process fluid flow value to the at least one additional process device.

公开(公告)号：EP0852703B1

公开(公告)日：2011-05-04

申请号：EP96933150.3

申请日：1996-09-26

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A. ,  LESMEISTER, Brad, L.

IPC分类号： G01F1/58

CPC分类号： G01F1/64 ,  G01F1/58 ,  G01F1/584

摘要： A flow tube (10) has a metal outer tube (12) and is lined (26) with an ETFE fluoropolymer that is resistant to corrosive chemicals and mechanical damage even at high temperatures. The inner surface (22) of the metal tube (12) is coated with a bonding metal (28) that can be securely bonded to the outer metal tube (12) and also forms a strong bond with ETFE fluoropolymer. After the bonding metal (28) has been applied, a layer (26) of a desired thickness of the ETFE fluoropolymer is molded in place to form an inner liner for the flow tube (10).

公开(公告)号：EP2132546A2

公开(公告)日：2009-12-16

申请号：EP08726392.7

申请日：2008-03-04

申请人： Rosemount, Inc.

发明人： KLEVEN, Lowell, A. ,  ROMO, Mark, G.

IPC分类号： G01L9/00 ,  G01L19/00 ,  G01L19/14

CPC分类号： G01L19/003 ,  G01L19/0061 ,  G01L19/0084 ,  G01L19/0645

摘要： A pressure transmitter (100) comprises a metal wall (102) separating a process pressure chamber (104) from an electronics compartment (106). The metal wall (102) has a stepped bore (108) with a bore shelf (110) facing the process pressure chamber (104). A metal header (112) has a stepped outer rim (114) with a header shelf that contacts the bore shelf. The metal header (112) includes at least one electrical feedthrough (122,124) with a glass-to-metal seal (126,128) adjacent the stepped outer rim (114). A welded seal (130) seals the stepped outer rim to the stepped bore.

公开(公告)号：EP0852703A1

公开(公告)日：1998-07-15

申请号：EP96933150.0

申请日：1996-09-26

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A. ,  LESMEISTER, Brad, L.

IPC分类号： B32B15 ,  F16L58 ,  G01F1

CPC分类号： G01F1/64 ,  G01F1/58 ,  G01F1/584

摘要： A flow tube (10) has a metal outer tube (12) and is lined (26) with an ETFE fluoropolymer that is resistant to corrosive chemicals and mechanical damage even at high temperatures. The inner surface (22) of the metal tube (12) is coated with a bonding metal (28) that can be securely bonded to the outer metal tube (12) and also forms a strong bond with ETFE fluoropolymer. After the bonding metal (28) has been applied, a layer (26) of a desired thickness of the ETFE fluoropolymer is molded in place to form an inner liner for the flow tube (10).

公开(公告)号：EP0374161B1

公开(公告)日：1993-09-01

申请号：EP88906310.3

申请日：1988-06-02

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A.

IPC分类号： G01W1/00 ,  B64D15/00 ,  G08B19/02

CPC分类号： B64D15/20 ,  G08B19/02

摘要： An ice detector probe (10) senses an ice deposition from an air mass flowing relative to the probe (10). The probe (10) includes a support (12) for installation of the probe (10) to receive the airflow and an element (30) formed on a substrate having a sensing surface (32) which directly receives the airflow. The element (30) heats the sensing surface (32) to melt an ice deposition formed thereon. The element (30) also senses the sensing surface temperature during heating and provides an output representative of such temperature.

公开(公告)号：EP2002213B1

公开(公告)日：2012-07-11

申请号：EP07753978.1

申请日：2007-03-26

申请人： Rosemount, Inc.

发明人： KLEVEN, Lowell, A.

IPC分类号： G01D3/028

CPC分类号： G01D3/028 ,  G01D5/24

摘要： A circuit (100) that senses a process variable (PROC. VAR.), comprises a voltage divider (106) that includes first (102) and second (104) capacitances. At least one of the capacitances is varied by the process variable. Divider ends (128,130) receive modulated potentials (El, E2), and a divider center tap (108) coupled to a detector. The detector has a detector output (118) representing carrier frequency range components. A control circuit (120) controls a baseband envelope of the modulated potentials as a function of the detector output.

公开(公告)号：EP1214633B2

公开(公告)日：2009-07-22

申请号：EP00963693.7

申请日：2000-09-22

申请人： ROSEMOUNT INC.

发明人： KLEVEN, Lowell, A. ,  TEWFIK, Ahmed, H.

IPC分类号： G05B23/02 ,  G05B19/418 ,  G05B19/042

CPC分类号： G01F1/42 ,  G01F25/0007 ,  G05B19/0423 ,  G05B2219/31126 ,  G05B2219/34084 ,  G05B2219/34142 ,  G05B2219/37401

摘要： A transmitter (10) for measuring a process variable includes a sensor (102) configured to couple to a process and having a sensor output (120) related to the process variable. A microprocessor (106) coupled to the sensor output (120) provides a process variable output which is a function of an orthogonal-polynomial of the sensor output (120). A transmitter output is configured to provide an output related to the process variable.