公开(公告)号：WO1997007444A3

公开(公告)日：1997-02-27

申请号：PCT/US1996013028

申请日：1996-08-09

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ZOU, Hehong ,  HEDSTROM, Kale, P. ,  WARRIOR, Jogesh ,  HAYS, Coy, L.

IPC: G05B23/02

公开(公告)号：WO1996039617A1

公开(公告)日：1996-12-12

申请号：PCT/US1996008839

申请日：1996-06-04

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KIRKPATRICK, William, R.

IPC: G01K07/02

CPC classification number: G01K7/20 ,  G01K7/026 ,  G01K15/00

Abstract: A temperature transmitter (10) in a process control system includes a temperature sensor (16, 18) which senses temperature and provides a sensor output related to sensed temperature. An analog-to-digital converter (28) coupled to the sensor output provides a digitized output related to the sensor output. A microprocessor (22) receives the digitized output, compensates the digitized output and provides a temperature output. Comparison circuitry (12) compares the sensor output to a first threshold VREF1 and provides an inhibit signal to the microprocessor (22) if the sensor is outside of the first threshold VREF1.

Abstract translation: 过程控制系统中的温度传感器（10）包括温度传感器（16,18），其感测温度并提供与感测温度相关的传感器输出。 耦合到传感器输出的模拟 - 数字转换器（28）提供与传感器输出相关的数字化输出。 微处理器（22）接收数字化输出，补偿数字化输出并提供温度输出。 比较电路（12）将传感器输出与第一阈值VREF1进行比较，并且如果传感器在第一阈值VREF1之外，则向微处理器（22）提供禁止信号。

公开(公告)号：WO1995029433A1

公开(公告)日：1995-11-02

申请号：PCT/US1995004724

申请日：1995-04-17

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  BROWN, Gregory, C.

IPC: G05B19/414

CPC classification number: G05B19/4142 ,  F16K37/0083 ,  F16K37/0091 ,  G05B6/05 ,  G05B2219/34309 ,  Y10T137/2409 ,  Y10T137/7761

Abstract: A valve positioner (26) controls operation of a valve (32) in a process control system. The valve positioner (26) is coupled to a process control loop (24a, 24b) over which it receives a signal representative of a desired valve position and operating power for the positioner (26). The valve positioner (26) controls a pneumatic actuator (30) which in turn controls position of the valve (32). The valve positioner (26) includes a microprocessor (52), associated digital circuitry and analog circuitry.

Abstract translation: 阀定位器（26）控制过程控制系统中的阀（32）的操作。 阀定位器（26）联接到过程控制回路（24a，24b），在该过程控制回路（24a，24b）上接收代表期望阀位置的信号和用于定位器（26）的操作功率。 阀定位器（26）控制气动致动器（30），气动致动器又控制阀门（32）的位置。 阀定位器（26）包括微处理器（52），相关联的数字电路和模拟电路。

公开(公告)号：WO1995008759A1

公开(公告)日：1995-03-30

申请号：PCT/US1994009119

申请日：1994-08-12

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  FRICK, Roger, L. ,  SNYDER, Robert, K.

IPC: G01L19/06

CPC classification number: G01L19/0645 ,  G01L19/0038

Abstract: A transmitter (10) provides an output indicative of pressure of process fluid. The transmitter (10) has a first body (14) with a passageway (32) filled with isolation fluid extending from a first port to a pressure sensor (16). A second body (13) has an inlet for receiving process fluid (28) and a second port. An isolation diaphragm (46) between the first and second ports isolates process fluid from isolation fluid. A seal (48) adjacent the diaphragm (46) seals the diaphragm (46) and couples the diaphragm (46) to the second body (13). A spring (66, 68) urges the seal (48) against the diaphragm (46).

Abstract translation: 发射器（10）提供指示过程流体的压力的输出。 发射器（10）具有第一主体（14），其具有填充有从第一端口延伸到压力传感器（16）的隔离流体的通道（32）。 第二主体（13）具有用于接收处理流体（28）和第二端口的入口。 在第一和第二端口之间的隔离隔膜（46）将过程流体与隔离流体隔离开。 邻近隔膜（46）的密封件（48）密封隔膜（46）并将隔膜（46）连接到第二主体（13）。 弹簧（66,68）将密封件（48）推向隔膜（46）。

公开(公告)号：WO1995008758A1

公开(公告)日：1995-03-30

申请号：PCT/US1994008584

申请日：1994-07-29

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  LOUWAGIE, Bennett, L. ,  MUNSON, Gregory, S. ,  WIKLUND, David, E. ,  ZWEBER, Michael, J. ,  BRODEN, David, A. ,  BISCHOFF, Brian, J. ,  CORPRON, Gary, P.

IPC: G01L19/00

CPC classification number: G01F23/18 ,  G01F1/363 ,  G01F1/50 ,  G01F1/88 ,  G01F15/063 ,  G01L9/045 ,  G01L19/0007 ,  G01L19/0015 ,  G01L19/083

Abstract: A two-wire transmitter (2) senses differential pressure, absolute pressure, and process temperature of a process fluid. The information can be used to provide an output representative of mass flow through a pipe (4). The transmitter (2) has an electronics module housing (14) attached to a sensor module housing (16).

Abstract translation: 两线制变送器（2）感测工艺流体的压差，绝对压力和工艺温度。 该信息可用于提供代表通过管道（4）的质量流量的输出。 发射器（2）具有附接到传感器模块壳体（16）的电子模块壳体（14）。

公开(公告)号：WO1995008752A2

公开(公告)日：1995-03-30

申请号：PCT/US1994009295

申请日：1994-08-15

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  FRICK, Roger, L.

IPC: G01D05/24

CPC classification number: G01R27/2605 ,  G01D5/2417 ,  G01L9/12

Abstract: A pressure sensor (10) measures pressure by measuring capacitance between two capacitive plates (114, 116). Pressure change appears as a change in capacitance. Stray capacitance interferes with this measurement. The stray capacitance arises between the capacitor plates (114, 116) and surrounding material. Circuitry (140) reduces stray capacitance by maintaining substantially no potential difference between a capacitor plate (114, 116) and surrounding material responsible for stray capacitance.

Abstract translation: 压力传感器（10）通过测量两个电容板（114,116）之间的电容来测量压力。 压力变化表现为电容的变化。 杂散电容会干扰此测量。 电容器板（114,116）和周围材料之间产生杂散电容。 电路（140）通过维持电容器板（114,116）和负责杂散电容的周围材料之间基本上没有电位差来减小杂散电容。

公开(公告)号：WO1994006035A1

公开(公告)日：1994-03-17

申请号：PCT/US1993008144

申请日：1993-08-30

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  RUTKIEWICZ, Robert, D.

IPC: G01W01/00

CPC classification number: G01W1/14 ,  G08B19/02 ,  Y02A90/14

Abstract: The snow sensor utilizes a single temperature sensor (10) and heating element (12) in thermal contact with the sensing surface (11). The signal from the temperature sensor (10) and the signal from the heating element (12) are input to a standard microprocessor integrated circuit (18). The microprocessor (18) continuously compares the two signals to accurately assess whether snow is present on the sensing surface (11). The snow sensor eliminates the requirement for a moving airmass to accurately assess the presence of snow on the sensing surface. The snow sensor does not ingest snow nor require ice formation to operate. The snow sensing surface (11) and the sensor housing (30) are weather and debris resistant. The snow sensor may be mounted in an elevated position or in any suitable location proximate an area to be monitored. The snow sensor of the present invention serves as an integral part of a closed loop control system for numerous snow removal applications.

Abstract translation: 雪传感器利用与感测表面（11）热接触的单个温度传感器（10）和加热元件（12）。 来自温度传感器（10）的信号和来自加热元件（12）的信号被输入到标准微处理器集成电路（18）。 微处理器（18）连续地比较两个信号以准确地评估感测表面（11）上是否存在雪。 雪传感器消除了移动空气质量准确评估感测面上雪的存在的要求。 雪地传感器不会积雪，也不需要冰块形成。 雪感测表面（11）和传感器壳体（30）具有耐候性和耐碎屑性。 雪传感器可以安装在提升位置或者靠近待监视区域的任何合适的位置。 本发明的雪传感器作为用于众多除雪应用的闭环控制系统的组成部分。

公开(公告)号：WO1994000360A1

公开(公告)日：1994-01-06

申请号：PCT/US1992005209

申请日：1992-06-19

Applicant: ROSEMOUNT INC. ,  PETERSEN, Paul, S.

Inventor： ROSEMOUNT INC.

IPC: B65D63/00

CPC classification number: B29C45/1782

Abstract: A dual cam operated clamp (10) having a housing (11) which changes its effective diameter due to the rotation of cam pins (29, 30) having a linking member (40) which holds the cam pins (29, 30) in place and provides a spring force to clamp the housing (11).

Abstract translation: 具有壳体（11）的双凸轮操作夹具（10），其由于具有将凸轮销（29,30）保持在适当位置的连接构件（40）的凸轮销（29,30）的旋转而改变其有效直径 并且提供弹簧力以夹紧壳体（11）。

公开(公告)号：WO1993008479A1

公开(公告)日：1993-04-29

申请号：PCT/US1992008733

申请日：1992-10-13

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  LOFGREN, Lyle, E. ,  SCHULTE, John, P. ,  SEEMAN, Brian

IPC: G01R27/26

CPC classification number: G01L9/125

Abstract: A two wire transmitter (12) responsive to a pressure differential sensor (30) includes a fixed module (28) and a removable module (26). The fixed module (28) is adapted for connection to an analog removable module (26) having a compensation capacitance MACDA or a digital removable module having compensation capacitance CDD. Capacitance compensation circuitry is included in the fixed module (28) which includes a compensation capacitance CDM (124) which is selected whereby MACDA equals CDD when the analog removable module (26) and the digital removable module are calibrated. This provides a pressure transfer function which is more linearized and less susceptible to temperature variations.

公开(公告)号：WO1993006576A1

公开(公告)日：1993-04-01

申请号：PCT/US1992007038

申请日：1992-08-20

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ANDERSON, Stephen, D. ,  FRICK, Roger, L. ,  MONZO, Glen, E. ,  WESTFIELD, Brian, L.

IPC: G08C19/00

CPC classification number: G08C19/02

Abstract: A three wire transmitter (50) bidirectionally communicates AC signals to and from a first external device (59) and sends DC signals to a second external device (59). The transmitter (50) includes a sensor circuit (52) and a communication circuit (70), both energized from power (66) and common (69) terminals of the transmitter (50). The communication circuit (70) receives a sensor output indicating a sensed process variable and provide DC and AC signals to a signal terminal (68) which connects to both external devices (59), and also receives AC signals from the first external device (59). The DC signal is representative of the sensed process variable and the AC signal is digitally representative of the sensed process variable and of transmitter data selected by the received AC signal.