中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.02 seconds)

    PRESSURE TRANSMITTER WITH FILL FLUID LOSS DETECTION
    1.
    发明申请
    PRESSURE TRANSMITTER WITH FILL FLUID LOSS DETECTION 审中-公开
    压力变送器与流体液体损失检测

    公开(公告)号：WO1996017235A1

    公开(公告)日：1996-06-06

    申请号：PCT/US1995014925

    申请日：1995-11-15

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  RUD, Stanley, E., Jr. ,  PETRICH, William, E. ,  LOUWAGIE, Bennett, L. ,  KROUTH, Terrance, F.

    IPC: G01L19/00

    CPC classification number: G01L19/0672 ,  G01L19/0092 ,  G01L19/0645 ,  G01M3/16

    Abstract: A pressure transmitter (50) has a pressure sensor (24) coupled to an isolator diaphragm (18L/18H) by a fill fluid (22H/22L) such as oil. Means (52L/54H, 56) are provided for measuring the position of the isolator diaphragm (18L/18H) and comparing the measured position with an expected position to give an indication of fill fluid (22H/22L) leakage. Non-contact arrangements such as capacitive and ultrasonic techniques are disclosed for measuring isolator diaphragm (18L/18H) position, as well as contacting arrangements such as switches. The fill fluid loss arrangement can be incorporated into a two-wire transmitter, which transmitter can be made to send a warning signal to a control unit when fill fluid loss is detected.

    Abstract translation: 压力变送器（50）具有通过诸如油的填充流体（22H / 22L）联接到隔离膜（18L / 18H）的压力传感器（24）。 提供了用于测量隔离膜片（18L / 18H）的位置并将测量位置与预期位置进行比较的装置（52L / 54H，56），以给出填充液（22H / 22L）泄漏的指示。 公开了诸如电容和超声波技术的非接触布置用于测量隔离膜（18L / 18H）位置以及接触布置（例如开关）。 填充流体损失布置可以结合到双线发射器中，当检测到填充液体损失时，可以使发射器向控制单元发送警告信号。

    SPRING LOADED RESIN SEAL
    2.
    发明申请
    SPRING LOADED RESIN SEAL 审中-公开
    弹簧加载树脂密封

    公开(公告)号：WO1993006390A1

    公开(公告)日：1993-04-01

    申请号：PCT/US1992007855

    申请日：1992-09-17

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  KROUTH, Terrance, F. ,  ZWEBER, Michael, J.

    IPC: F16J15/10

    CPC classification number: F16J15/3236 ,  F16J15/121 ,  Y10S277/946

    Abstract: A spring loaded seal (30) is placed between three continuous groove walls (22, 24, 26) between mating parts (12, 16) adjacent to a pressure transmitter isolator (14). The seal (30) includes a resin ring (32) with two ring walls (34, 36) conformable to two (26, 28) of the groove walls. A third ring wall (38) has a continuous slot (42) extending into the ring (32). A coil spring (50) is placed in the slot (42) such that, upon mating of the parts (12, 16), the third wall (26) presses the coil spring (50) toward the slot (42). This compresses the coil spring (50) to sealingly force the first and second outer ring walls (34, 36) against the first and second groove walls (24, 28) respectively with a controlled force. The compression of the coil spring (50) controls the sealing force to limit undesired distortion of the groove walls (24, 26, 28).

    TERMINAL LEAKAGE MONITORING FOR FIELD DEVICES
    3.
    发明申请
    TERMINAL LEAKAGE MONITORING FOR FIELD DEVICES 审中-公开
    现场设备的终端泄漏监测

    公开(公告)号：WO2008088466A1

    公开(公告)日：2008-07-24

    申请号：PCT/US2007/024594

    申请日：2007-11-29

    Applicant: ROSEMOUNT INC. ,  KROUTH, Terrance, F. ,  WANG, Rongtai ,  WENDORF, Kris, Allen

    Inventor： KROUTH, Terrance, F. ,  WANG, Rongtai ,  WENDORF, Kris, Allen

    IPC: G01F1/56

    CPC classification number: G05F1/569 ,  G01L1/2268 ,  G01L19/086 ,  G01L27/007

    Abstract: A field device detects the presence of terminal leakage between a first terminal and a second terminal in the terminal block area of the field device using a voltage variation ratio that is based on variations in a terminal voltage located across output terminals of a field device and variations in a current regulation voltage located within a current regulation circuit. Preferable, the field device measures an initial voltage variation ratio κ 0 and a subsequent voltage variation ratio κ 0 . Based on the initial voltage variation ratio κ 0 and the subsequent voltage variation ratio κ 0 the terminal leakage existing between the first terminal and the second terminal can be calculated.

    Abstract translation: 现场设备使用基于位于现场设备的输出端子上的端子电压的变化的电压变化比来检测现场设备的接线端子区域中的第一端子和第二端子之间的端子泄漏的存在以及变化 位于电流调节电路内的电流调节电压。 优选地，现场设备测量初始电压变化比α0和随后的电压变化比α0<0>。 基于初始电压变化率α<0>和随后的电压变化比α0可以计算第一端子和第二端子之间存在的端子泄漏。

    PRESSURE TRANSMITTER WITH STRESS ISOLATION DEPRESSION
    4.
    发明申请
    PRESSURE TRANSMITTER WITH STRESS ISOLATION DEPRESSION 审中-公开
    压力分离器压力传感器

    公开(公告)号：WO1992010731A1

    公开(公告)日：1992-06-25

    申请号：PCT/US1991008697

    申请日：1991-11-20

    Applicant: ROSEMOUNT INC.

    Inventor： ROSEMOUNT INC. ,  DEAN, Michael, J. ,  MATTISON, Lee, Ann ,  KROUTH, Terrance, F.

    IPC: G01L09/12

    CPC classification number: G01L19/0645 ,  G01L9/0072 ,  G01L13/025

    Abstract: A pressure transmitter (10) has a pressure transducer (12) in a transmitter housing (14). The transmitter housing (14) includes a groove or a notch (20) defining a flexure closely proximate a housing outer rim (24). The outer rim (24) receives a large clamping force from a flange (16) and is deflectable about the flexure for reducing transmission of axial and radial components of the clamping force from the housing outer rim (24) to the transducer (12), which forces can cause distortions to the pressure transducer (12). Unevenly distributed clamping forces caused by differential thermal expansion of the flange (16), bolts (26) and housing (14), are isolated from the transducer (12), thereby reducing measurement errors. Further, transmission of hysteretic radial forces from the transmitter housing (14) to the transducer (12) caused by friction when the flange (16) slides across the pressure transmitter housing (14), each having different thermal coefficients of expansion, is also reduced. Several types of pressure transducers (12) including capacitive cell transducers can be in the transmitter housing (14) for providing a pressure output indicative of line and differential pressure.

    BI-DIRECTIONAL DIFFERENTIAL PRESSURE FLOW SENSOR
    5.
    发明公开
    BI-DIRECTIONAL DIFFERENTIAL PRESSURE FLOW SENSOR 有权
    双向差分流量传感器

    公开(公告)号：EP1269027A2

    公开(公告)日：2003-01-02

    申请号：EP01916156.1

    申请日：2001-02-22

    Applicant: ROSEMOUNT INC.

    Inventor： WIKLUND, David, E. ,  KROUTH, Terrance, F. ,  BRODEN, David, A. ,  SCHUMACHER, Mark, S.

    IPC: F15B15/28 ,  G01F1/00

    CPC classification number: G01F1/50 ,  F15B15/2838 ,  G01F1/40 ,  G01F1/42 ,  G01F1/44

    Abstract: Disclosed is a bi-directional differential pressure flow sensor (10) that is configured to establish a direction and flow rate of a fluid flow. The flow sensor (10) includes a flow restriction member (20), a differential pressure sensor (22), and processing electronics (50). The flow restriction member (20) is configured to produce a pressure drop when placed inline with the fluid flow. The differential pressure sensor (22) is embedded or integral with the flow restriction member and produces a differential pressure signal that is indicative of the pressure drop. The processing electronics (50) produces a flow rate signal that is indicative of the direction and flow rate of the fluid flow as a function of the differential pressure signal.

    PRESSURE TRANSMITTER WITH STRESS ISOLATION DEPRESSION
    6.
    发明授权
    PRESSURE TRANSMITTER WITH STRESS ISOLATION DEPRESSION 失效
    有了良好压力罐隔离紧张

    公开(公告)号：EP0560875B1

    公开(公告)日：1996-01-31

    申请号：EP92901194.8

    申请日：1991-11-20

    Applicant: ROSEMOUNT INC.

    Inventor： DEAN, Michael, J. ,  MATTISON, Lee, Ann ,  KROUTH, Terrance, F.

    IPC: G01L9/12 ,  G01L13/02 ,  G01L19/14

    CPC classification number: G01L19/0645 ,  G01L9/0072 ,  G01L13/025

    Abstract: A pressure transmitter (10) has a pressure transducer (12) in a transmitter housing (14). The transmitter housing (14) includes a groove or a notch (20) defining a flexure closely proximate a housing outer rim (24). The outer rim (24) receives a large clamping force from a flange (16) and is deflectable about the flexure for reducing transmission of axial and radial components of the clamping force from the housing outer rim (24) to the transducer (12), which forces can cause distortions to the pressure transducer (12). Unevenly distributed clamping forces caused by differential thermal expansion of the flange (16), bolts (26) and housing (14), are isolated from the transducer (12), thereby reducing measurement errors. Further, transmission of hysteretic radial forces from the transmitter housing (14) to the transducer (12) caused by friction when the flange (16) slides across the pressure transmitter housing (14), each having different thermal coefficients of expansion, is also reduced. Several types of pressure transducers (12) including capacitive cell transducers can be in the transmitter housing (14) for providing a pressure output indicative of line and differential pressure.

    TERMINAL LEAKAGE MONITORING FOR FIELD DEVICES
    7.
    发明公开
    TERMINAL LEAKAGE MONITORING FOR FIELD DEVICES 有权
    设备对于作战工程的泄漏监测

    公开(公告)号：EP2130001A1

    公开(公告)日：2009-12-09

    申请号：EP07862345.1

    申请日：2007-11-29

    Applicant: Rosemount, Inc.

    Inventor： KROUTH, Terrance, F. ,  WANG, Rongtai ,  WENDORF, Kris, Allen

    IPC: G01F1/56

    CPC classification number: G05F1/569 ,  G01L1/2268 ,  G01L19/086 ,  G01L27/007

    Abstract: A field device detects the presence of terminal leakage between a first terminal and a second terminal in the terminal block area of the field device using a voltage variation ratio that is based on variations in a terminal voltage located across output terminals of a field device and variations in a current regulation voltage located within a current regulation circuit. Preferable, the field device measures an initial voltage variation ratio ϰ0 and a subsequent voltage variation ratio ϰ0. Based on the initial voltage variation ratio ϰ0 and the subsequent voltage variation ratio ϰ0 the terminal leakage existing between the first terminal and the second terminal can be calculated.

    SPRING LOADED RESIN SEAL
    9.
    发明授权
    SPRING LOADED RESIN SEAL 失效
    弹簧加载的密封树脂

    公开(公告)号：EP0607230B1

    公开(公告)日：1997-03-12

    申请号：EP92920959.1

    申请日：1992-09-17

    Applicant: ROSEMOUNT INC.

    Inventor： KROUTH, Terrance, F. ,  ZWEBER, Michael, J.

    IPC: F16J15/10 ,  F16J15/02

    CPC classification number: F16J15/3236 ,  F16J15/121 ,  Y10S277/946

    Abstract: A spring loaded seal (30) is placed between three continuous groove walls (22, 24, 26) between mating parts (12, 16) adjacent to a pressure transmitter isolator (14). The seal (30) includes a resin ring (32) with two ring walls (34, 36) conformable to two (26, 28) of the groove walls. A third ring wall (38) has a continuous slot (42) extending into the ring (32). A coil spring (50) is placed in the slot (42) such that, upon mating of the parts (12, 16), the third wall (26) presses the coil spring (50) toward the slot (42). This compresses the coil spring (50) to sealingly force the first and second outer ring walls (34, 36) against the first and second groove walls (24, 28) respectively with a controlled force. The compression of the coil spring (50) controls the sealing force to limit undesired distortion of the groove walls (24, 26, 28).

Patent Agency Ranking