公开(公告)号：US06520020B1

公开(公告)日：2003-02-18

申请号：US09478383

申请日：2000-01-06

申请人： Mark A. Lutz ,  Roger Frick ,  Fred C. Sittler ,  Adrian C. Toy

发明人： Mark A. Lutz ,  Roger Frick ,  Fred C. Sittler ,  Adrian C. Toy

IPC分类号： G01L700

CPC分类号： G01L9/0075

摘要： A pressure sensor integrally formed in the shape of a beam around a central channel. The beam has an integral blind end that is pressurized by the fluid. The beam has an opposite end that is shaped to provide a stepped corner with a gap opening at the base of the stepped corner, where the gap and isolated from the fluid. A sensing film in the channel adjacent the blind end has an electrical parameter that varies with pressure and electrical leads that extend from the channel and out the gap. A seal fills the gap around the leads and the seal fills a portion of the stepped corner. The sensor is preferably formed by direct bonding of single crystal alumina layers. Applications include industrial pressure transmitters, aerospace and turbine engine pressure sensing.

摘要翻译： 压力传感器一体形成为围绕中心通道的梁的形状。 梁具有由流体加压的整体的盲端。 梁具有相对的端部，其形状设置成在阶梯形拐角的基部处提供间隙开口的阶梯形拐角，其中间隙与流体隔离。 与盲端相邻的通道中的感测膜具有随着压力变化的电参数，以及从通道延伸出间隙的电引线。 密封件填充引线周围的间隙，并且密封件填充阶梯形拐角的一部分。 该传感器优选通过直接结合单晶氧化铝层来形成。 应用包括工业压力变送器，航空航天和涡轮发动机压力传感。

公开(公告)号：US06484585B1

公开(公告)日：2002-11-26

申请号：US09603640

申请日：2000-06-26

申请人： Fred C. Sittler ,  Roger Frick

发明人： Fred C. Sittler ,  Roger Frick

IPC分类号： G01L912

CPC分类号： G01L9/0075 ,  G01L9/125 ,  G01L19/04

摘要： A pressure transmitter in a process control system for transmitting pressure on a process control loop includes a transmitter housing, an isolation diaphragm configured to couple to a process fluid, and a pressure sensor body of a brittle corrosion resistant material operably coupled to the housing and positioned in the housing. The pressure sensor comprising a first portion bonded to a second portion by a fusion bond, the fusion bond substantially free of foreign material. An isolation fluid is configured to fluidically couple the pressure sensor body to the isolation diaphragm to thereby couple the pressure sensor to a pressure of the process fluid. Measurement circuitry in the transmitter housing coupled to the pressure sensor provides an output which is a function of capacitance, a loop interface in the transmitter housing coupled to the measurement circuitry configured to transmit a pressure related signal on the process control loop as a function of the pressure.

摘要翻译： 用于在过程控制回路上传送压力的过程控制系统中的压力变送器包括变送器壳体，被配置成耦合到过程流体的隔离膜，以及可操作地耦合到壳体并定位的耐脆性腐蚀材料的压力传感器本体 在房屋里 所述压力传感器包括通过熔接键合到第二部分的第一部分，所述熔接基本上不含异物。 隔离流体被配置成将压力传感器主体流体地耦合到隔离膜片，从而将压力传感器耦合到过程流体的压力。 耦合到压力传感器的变送器外壳中的测量电路提供与电容有关的输出，该变送器壳体中的环路接口耦合到测量电路，该测量电路经配置以在过程控制回路上传递压力相关信号，作为 压力。

公开(公告)号：US06487912B1

公开(公告)日：2002-12-03

申请号：US09519912

申请日：2000-03-07

申请人： Steven M. Behm ,  Richard L. Nelson ,  Robert Hedtke ,  Roger Frick ,  Scott D. Nelson ,  Mark Fandrey ,  Theodore H. Schnaare ,  Brian L. Westfield ,  Mark S. Schumacher ,  Weston Roper

发明人： Steven M. Behm ,  Richard L. Nelson ,  Robert Hedtke ,  Roger Frick ,  Scott D. Nelson ,  Mark Fandrey ,  Theodore H. Schnaare ,  Brian L. Westfield ,  Mark S. Schumacher ,  Weston Roper

IPC分类号： G01L900

CPC分类号： G01L19/0046 ,  G01D1/00 ,  G01L19/0084 ,  G01L19/0663 ,  G01L19/141 ,  H01R29/00

摘要： A pressure sensor module and method for pre-installation without a converter module. The pressure sensor module is hermetically sealed and can remain undamaged in an installation environment without a converter module. The pressure sensor module can be assembled later with a converter module in the installation environment. The pressure sensor module includes an isolator, a pressure sensor and a circuit that provides a bus for energization, control and a digital pressure output. The bus is connected to contacts in an insulating feedthrough. An integrally formed hermetic external support structure surrounds the pressure sensor and circuit. The hermetic external support structure has a threaded process fluid inlet around the isolator, and a threaded support sleeve supporting the feedthrough.

摘要翻译： 压力传感器模块和方法，用于在没有转换器模块的情况下预安装。 压力传感器模块是密封的，并且可以在没有转换器模块的安装环境中保持不损坏。 以后可以在安装环境中使用转换器模块组装压力传感器模块。 压力传感器模块包括隔离器，压力传感器和提供用于通电，控制和数字压力输出的总线的电路。 总线连接到绝缘馈通中的触点。 整体形成的密封外部支撑结构围绕压力传感器和电路。 密封的外部支撑结构具有围绕隔离器的螺纹过程流体入口和支撑馈通的螺纹支撑套筒。

公开(公告)号：US5372046A

公开(公告)日：1994-12-13

申请号：US954513

申请日：1992-09-30

申请人： Lowell Kleven ,  Roger Frick

发明人： Lowell Kleven ,  Roger Frick

IPC分类号： G01F1/32 ,  G01F15/06

CPC分类号： G01F15/063 ,  G01F1/329 ,  G01F15/068

摘要： A vortex flow transmitter has a filtering circuit receiving a noise contaminated input signal representative of the flow and which has a fundamental frequency varying responsively to flow. The filter filters the input signal using one of a family of HP filter characteristics to produce a filtered signal having a frequency representative of the physical parameter. Each member of the family of HP filters has varying corner frequencies, each filter having a unique switchup and a unique switchdown value assigned to it. Adaptive response element select a current HP filter for use in the filter. Adaptive circuitry uses one selection method when the flow is increasing and another selection method when the flow decreases. Finally, output circuitry converts the signal from the filter into a transmitter output, typically a 4-20 mA current or a frequency output representative of the flow.

摘要翻译： 涡流传送器具有滤波电路，其接收代表流量的噪声污染输入信号，并且具有响应于流量变化的基本频率。 滤波器使用HP滤波器特性族中的一个来滤波输入信号，以产生具有代表物理参数的频率的滤波信号。 HP滤波器系列的每个成员具有不同的转角频率，每个滤波器具有独特的开关和分配给它的唯一的开关值。 自适应响应元素选择用于滤波器的当前HP滤波器。 当流量增加时，自适应电路使用一种选择方法，当流量减小时，使用另一种选择方法。 最后，输出电路将来自滤波器的信号转换为发射机输出，通常为4-20mA电流或表示流量的频率输出。

公开(公告)号：US20050063444A1

公开(公告)日：2005-03-24

申请号：US09996143

申请日：2001-11-28

申请人： Roger Frick

发明人： Roger Frick

IPC分类号： G01D5/26 ,  G01D5/353 ,  H01S3/00 ,  H01S3/06 ,  H01S3/08 ,  H01S3/083 ,  H01S3/091 ,  H01S3/0933 ,  H01S3/10 ,  H01S5/14 ,  H01S5/183

CPC分类号： G01D5/35312 ,  G01D5/35341

摘要： An optical medium having a cavity that defines a variable gap is provided. The optical medium is used in an optical sensor, laser, and variable frequency resonator, by way of example. The cavity is physically altered in response to changes in a measurable parameter like pressure, temperature, force, flow rate, and material composition. The optical medium is characterized in some embodiments by having a cavity disposed near or within a high Q optical resonator. The optical resonator can be formed by various structures of which Bragg reflector cavities, ring resonators, microdiscs, and microspheres are examples. The optical resonator is preferably coupled to a laser source. The altering of the cavity affects the resonance condition within the optical resonator and thereby the laser signal of the system. If the laser source is a mode locked laser, the repetition rate of the pulse train changes in response to changes in the measurable parameter. If the laser source is a CW source the frequency of the laser signal is dependent upon a measurable parameter.

摘要翻译： 提供了具有限定可变间隙的空腔的光学介质。 作为示例，光学介质用于光学传感器，激光器和可变频率谐振器中。 响应于诸如压力，温度，力，流速和材料成分的可测量参数的变化，空腔被物理地改变。 在一些实施例中，光学介质的特征在于具有设置在高Q光学谐振器附近或内部的空腔。 光学谐振器可以通过布拉格反射器腔，环形谐振器，微型芯片和微球体的各种结构形成。 光学谐振器优选地耦合到激光源。 空腔的改变影响光学谐振器内的谐振状态，从而影响系统的激光信号。 如果激光源是锁模激光器，则脉冲串的重复率响应于可测量参数的变化而改变。 如果激光源是CW源，则激光信号的频率取决于可测量的参数。

公开(公告)号：US20050062628A1

公开(公告)日：2005-03-24

申请号：US10665672

申请日：2003-09-19

申请人： Roger Frick

发明人： Roger Frick

IPC分类号： G01D21/00 ,  G01L9/12 ,  G01R27/26 ,  H03M3/00

CPC分类号： G01D21/00

摘要： A measurement system includes multiple analog sensor elements and multiple sigma-delta modulators for producing digital outputs. Each sigma-delta modulator receives charge packets from one or more sensor element and charge packets from a shared element (which may be a sensor or a reference element). The sigma-delta modulators are operated synchronously in separate phases, so that the shared element either delivers or does not deliver a charge packet of the sign desired by a sigma-delta modulator only during the phase associated with that sigma-delta modulator.

摘要翻译： 测量系统包括多个模拟传感器元件和用于产生数字输出的多个Σ-Δ调制器。 每个Σ-Δ调制器从一个或多个传感器元件接收电荷包，并从共享元件（其可以是传感器或参考元件）充电数据包。 Σ-Δ调制器在单独的相位中同步操作，使得共享元件仅在与该Σ-Δ调制器相关联的相位期间传送或不传送由Σ-Δ调制器所期望的符号的电荷分组。