公开(公告)号：US20070069903A1

公开(公告)日：2007-03-29

申请号：US11507356

申请日：2006-08-21

申请人： David Wehrs ,  Robert Karschnia ,  Evren Eryurek

发明人： David Wehrs ,  Robert Karschnia ,  Evren Eryurek

IPC分类号： G08B21/00

CPC分类号： G01N33/2823 ,  G01F1/666 ,  G01F1/74 ,  G01N29/046 ,  G01N2291/02836 ,  G01P13/0006 ,  G01V1/28

摘要： An industrial field device provides information indicative of a process variable. The field device includes a controller, communication circuitry, a process variable sensor and measurement circuitry. The communication circuitry is coupled to the controller. The process variable sensor has an electrical characteristic that changes based on a variable of a process fluid. The measurement circuitry is coupled to the process variable sensor and coupled to the controller. The controller is configured to generate communication via the communication circuitry relative to the process variable, and to provide an indication of sand flow or other solids in the fluid.

摘要翻译： 工业现场设备提供指示过程变量的信息。 现场设备包括控制器，通信电路，过程变量传感器和测量电路。 通信电路耦合到控制器。 过程变量传感器具有基于过程流体的变量而变化的电特性。 测量电路耦合到过程变量传感器并耦合到控制器。 控制器被配置为经由通信电路相对于过程变量产生通信，并且提供流体中的沙流或其他固体的指示。

公开(公告)号：US20070010900A1

公开(公告)日：2007-01-11

申请号：US11397319

申请日：2006-04-04

申请人： Kadir Kavaklioglu ,  David Wehrs ,  Donald Lattimer ,  Evren Eryurek

发明人： Kadir Kavaklioglu ,  David Wehrs ,  Donald Lattimer ,  Evren Eryurek

IPC分类号： G05B11/01 ,  G05B13/02

CPC分类号： C10G11/187 ,  G05B23/0221 ,  G05B23/024

摘要： A device for diagnosing operation of an industrial process control or monitoring system includes an input configured to receive an input related to a process signal. A first statistical parameter module provides a first statistical parameter output related to a statistical parameter of the process signal. A filter provides a filter output related to a filtered value of the process signal. A second statistical parameter module provides a second statistical parameter output related to a statistical parameter of the filter output. A diagnostic module diagnoses operation of the industrial process based upon the first and second statistical parameters.

摘要翻译： 用于诊断工业过程控制或监视系统的操作的设备包括被配置为接收与过程信号有关的输入的输入。 第一统计参数模块提供与过程信号的统计参数相关的第一统计参数输出。 过滤器提供与过程信号的过滤值相关的过滤器输出。 第二统计参数模块提供与过滤器输出的统计参数相关的第二统计参数输出。 诊断模块基于第一和第二统计参数诊断工业过程的操作。

公开(公告)号：US20070234821A1

公开(公告)日：2007-10-11

申请号：US11807996

申请日：2007-05-31

申请人： David Wehrs ,  Robert Chinnock

发明人： David Wehrs ,  Robert Chinnock

IPC分类号： G01F1/58

CPC分类号： G01F1/60 ,  G01F1/588

摘要： A magnetic flow metering device and method is disclosed for the measurement of corrosive flow streams. The device utilizes a unibody construction wherein the flow conduit is constructed entirely from an insulative, non-conducting material without resorting to a metallic outer housing. The portions of the electrodes in contact with the flow stream are made of a suitable conductive polymer material, resistant to the corrosive media. The electrodes also feature shields that are molded into the electrode assembly to reduce background electrical noise. The invention also utilizes an electrical configuration that actively drives the electrode shield circuit (electrodes as well as cabling) to provide a more accurate measurement of the electromotive force.

公开(公告)号：US20070163362A1

公开(公告)日：2007-07-19

申请号：US11654893

申请日：2007-01-18

申请人： David Wehrs ,  Russell Evans ,  Ghidewon Arefe

发明人： David Wehrs ,  Russell Evans ,  Ghidewon Arefe

IPC分类号： G01F1/34

CPC分类号： G01F1/74 ,  G01F1/34 ,  G01F1/36 ,  G01F15/08

摘要： A process pressure fluid transmitter is coupled to a differential pressure producer and measures a differential pressure across the producer. A statistical parameter is calculated upon successive differential pressure indications, and the calculated parameter is used to indicate wet gas flow. The indication can be generated locally at the process pressure transmitter, communicated via a wired process communication loop, communicated wirelessly, or any combination thereof.

摘要翻译： 过程压力流体变送器耦合到差压生产者并测量整个生产者的差压。 统计参数是在连续差压指示下进行计算的，计算参数用于表示湿气流量。 该指示可以在过程压力变送器处本地生成，经由有线过程通信环路，无线通信或其任何组合进行通信。

公开(公告)号：US20070062304A1

公开(公告)日：2007-03-22

申请号：US11599023

申请日：2006-11-14

申请人： David Wehrs ,  Robert Chinnock

发明人： David Wehrs ,  Robert Chinnock

IPC分类号： G01F1/58

CPC分类号： G01F1/60 ,  G01F1/588

摘要： A magnetic flow metering device and method is disclosed for the measurement of corrosive flow streams. The device utilizes a unibody construction wherein the flow conduit is constructed entirely from an insulative, non-conducting material without resorting to a metallic outer housing. The portions of the electrodes in contact with the flow stream are made of a suitable conductive polymer material, resistant to the corrosive media. The electrodes also feature shields that are molded into the electrode assembly to reduce background electrical noise. The invention also utilizes an electrical configuration that actively drives the electrode shield circuit (electrodes as well as cabling) to provide a more accurate measurement of the electromotive force.

摘要翻译： 公开了一种用于测量腐蚀性流动的流量计量装置和方法。 该装置使用一体式结构，其中流动管道完全由绝缘的非导电材料构成，而不借助金属外壳体。 电极与流动流接触的部分由合适的导电聚合物材料制成，耐腐蚀性介质。 电极还具有模制到电极组件中以减少背景电噪声的屏蔽。 本发明还利用主动驱动电极屏蔽电路（电极以及布线）以提供更准确的电动势测量的电气结构。

公开(公告)号：US20060174715A1

公开(公告)日：2006-08-10

申请号：US11052005

申请日：2005-02-04

申请人： David Wehrs ,  Robert Chinnock

发明人： David Wehrs ,  Robert Chinnock

IPC分类号： G01F1/58

CPC分类号： G01F1/60 ,  G01F1/588

摘要： A magnetic flow metering device and method is disclosed for the measurement of corrosive flow streams. The device utilizes a unibody construction wherein the flow conduit is constructed entirely from an insulative, non-conducting material without resorting to a metallic outer housing. The portions of the electrodes in contact with the flow stream are made of a suitable conductive polymer material, resistant to the corrosive media. The electrodes also feature shields that are molded into the electrode assembly to reduce background electrical noise. The invention also utilizes an electrical configuration that actively drives the electrode shield circuit (electrodes as well as cabling) to provide a more accurate measurement of the electromotive force.

摘要翻译： 公开了一种用于测量腐蚀性流动的流量计量装置和方法。 该装置使用一体式结构，其中流动管道完全由绝缘的非导电材料构成，而不借助于金属外壳体。 电极与流动流接触的部分由合适的导电聚合物材料制成，耐腐蚀性介质。 电极还具有模制到电极组件中以减少背景电噪声的屏蔽。 本发明还利用主动驱动电极屏蔽电路（电极以及布线）以提供更准确的电动势测量的电气结构。

公开(公告)号：US20060277000A1

公开(公告)日：2006-12-07

申请号：US11503878

申请日：2006-08-14

申请人： David Wehrs

发明人： David Wehrs

IPC分类号： G21C17/00

CPC分类号： G01F25/0007 ,  G01F15/00

摘要： A flow meter for measuring flow of a process fluid includes a sensor configured to provide a sensor output signal. The sensor output signal is related to flow of the process fluid. Circuitry in the flow meter is configured to determine a statistical parameter related to sensor output signal. Diagnostic circuitry provides a diagnostic output based upon the determined statistical parameter and the sensor output signal.

摘要翻译： 用于测量过程流体的流量的流量计包括被配置为提供传感器输出信号的传感器。 传感器输出信号与过程流体的流量有关。 流量计中的电路配置为确定与传感器输出信号相关的统计参数。 诊断电路根据确定的统计参数和传感器输出信号提供诊断输出。