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公开(公告)号：US06412353B1
公开(公告)日：2002-07-02
申请号：US09400503
申请日：1999-09-21
IPC分类号： G01F132
CPC分类号： G01F15/024 , G01F1/3254 , G01F1/329
摘要： A vortex sensor senses the vortices generated by a vortex generator. A temperature sensor, disposed at a streamlined body within a flow tube, measures a temperature of fluid carried by the flow tube. A circuit coupled to the vortex sensor and to the temperature sensor creates an output indicative of the flow.
摘要翻译： 涡流传感器检测涡流发生器产生的涡流。 设置在流管内的流线型体上的温度传感器测量由流管承载的流体的温度。 耦合到涡流传感器和温度传感器的电路产生指示流量的输出。
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2.发明申请MULTIVARIABLE PROCESS FLUID FLOW DEVICE WITH FAST RESPONSE FLOW CALCULATION 有权具有快速响应流量计算的多重流程流体流动装置公开(公告)号：US20100106433A1
公开(公告)日：2010-04-29
申请号：US12606261
申请日：2009-10-27
申请人： Lowell A. Kleven , David E. Wiklund
发明人： Lowell A. Kleven , David E. Wiklund
摘要： A process fluid flow device includes process communication circuitry, a processor, and measurement circuitry. The process communication circuitry is configured to communicate with at least one additional process device. The processor is coupled to the process communication circuitry and is configured to execute instructions to provide a plurality of cycles, wherein each cycle includes a number of flow-related calculations. Measurement circuitry 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 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 communicates the computed process fluid flow value to the at least one additional process device.
摘要翻译： 过程流体流动装置包括过程通信电路，处理器和测量电路。 过程通信电路被配置为与至少一个附加过程设备进行通信。 处理器耦合到处理通信电路，并且被配置为执行指令以提供多个周期，其中每个周期包括多个与流量相关的计算。 测量电路可操作地耦合到多个过程变量传感器，以获得每个循环期间差压的指示，并获得静压力和处理流体温度。 处理器被配置为使用电流差压传感器指示和在先前循环期间计算的至少一个流量相关值来计算过程流体流量值。 过程通信电路将计算的过程流体流量值传递给至少一个附加过程装置。
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公开(公告)号：US20090292484A1
公开(公告)日：2009-11-26
申请号：US12470878
申请日：2009-05-22
申请人： David E. Wiklund , Lowell A. Kleven
发明人： David E. Wiklund , Lowell A. Kleven
IPC分类号： G01F1/34
CPC分类号： G01F1/363 , G01F1/50 , G01F1/88 , G01F15/046 , G01K17/06
摘要： A process fluid flow device includes a power supply module, a process communication module, a processor and measurement circuitry. The process communication circuitry is coupled to the power supply module and to the processor. The measurement circuitry is operably coupleable to plurality of process variable sensors to obtain an indication of differential pressure, static pressure and process fluid temperature. The processor is configured to compute process fluid mass flow, and to use the static pressure and process fluid temperature to obtain an energy per unit mass value relative to the process fluid and to provide an energy flow indication.
摘要翻译： 过程流体流动装置包括电源模块，过程通信模块，处理器和测量电路。 过程通信电路耦合到电源模块和处理器。 测量电路可操作地耦合到多个过程变量传感器以获得差压，静压和过程流体温度的指示。 处理器被配置为计算过程流体质量流量，并且使用静态压力和过程流体温度来获得相对于过程流体的每单位质量值的能量并且提供能量流量指示。
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公开(公告)号：US06484590B1
公开(公告)日：2002-11-26
申请号：US09400562
申请日：1999-09-21
IPC分类号： G01F132
CPC分类号： G01F15/024 , G01F1/3254 , G01F1/329
摘要： A method for measuring fluid flow includes generating vortices in a fluid and relating the fluid flow to a first set of fluid parameters to obtain a first relationship, and relating the fluid flow to a second set of fluid parameters to obtain a second relationship. The first and second sets of fluid parameters are monitored. A first flow value is calculated from the first set of monitor fluid parameters and the first relationship. The second relationship is adjusted based on the first flow value. The output value is calculated from the second set of monitored fluid parameters and the adjusted second relationship.
摘要翻译： 用于测量流体流动的方法包括在流体中产生涡流并将流体流与第一组流体参数相关联以获得第一关系，并将流体流与第二组流体参数相关联以获得第二关系。 监测第一组和第二组流体参数。 从第一组监测流体参数和第一关系计算第一流量值。 基于第一流量值调整第二关系。 输出值由第二组监测流体参数和经调整的第二关系计算。
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公开(公告)号：US06170338B2
公开(公告)日：2001-01-09
申请号：US08826167
申请日：1997-03-27
IPC分类号： G01F132
CPC分类号： G01F15/024 , G01F1/3254 , G01F1/329
摘要： A vortex sensor senses the generated vortices and provides a vortex signal. A filtering circuit is coupling to the vortex sensor to receive the vortex signal and provide an output indicative of fluid flow. A temperature sensor senses a temperature of the fluid and provides a temperature value, while a pressure sensor senses a pressure of the fluid and provides a pressure value. A processor is operably coupled to the filtering circuit, the temperature sensor, and the pressure sensor for receiving the output, the temperature value, and the pressure value, respectively. The processor calculates a calibration factor as a function of the output, the temperature value, and the pressure value for use in calculating the output value indicative of the flow rate of the fluid.
摘要翻译： 涡流传感器感测所产生的涡流并提供涡流信号。 滤波电路耦合到涡流传感器以接收涡流信号并提供指示流体流动的输出。 温度传感器检测流体的温度并提供温度值，同时压力传感器感测流体的压力并提供压力值。 处理器可操作地耦合到过滤电路，温度传感器和用于分别接收输出，温度值和压力值的压力传感器。 处理器根据输出，温度值和压力值来计算校准因子，用于计算表示流体流量的输出值。
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6.发明授权公开(公告)号：US08849589B2
公开(公告)日：2014-09-30
申请号：US12470878
申请日：2009-05-22
申请人： David E. Wiklund , Lowell A. Kleven
发明人： David E. Wiklund , Lowell A. Kleven
CPC分类号： G01F1/363 , G01F1/50 , G01F1/88 , G01F15/046 , G01K17/06
摘要： A process fluid flow device includes a power supply module, a process communication module, a processor and measurement circuitry. The process communication circuitry is coupled to the power supply module and to the processor. The measurement circuitry is operably coupleable to plurality of process variable sensors to obtain an indication of differential pressure, static pressure and process fluid temperature. The processor is configured to compute process fluid mass flow, and to use the static pressure and process fluid temperature to obtain an energy per unit mass value relative to the process fluid and to provide an energy flow indication.
摘要翻译： 过程流体流动装置包括电源模块，过程通信模块，处理器和测量电路。 过程通信电路耦合到电源模块和处理器。 测量电路可操作地耦合到多个过程变量传感器以获得差压，静压和过程流体温度的指示。 处理器被配置为计算过程流体质量流量，并且使用静态压力和过程流体温度来获得相对于过程流体的每单位质量值的能量并且提供能量流量指示。
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7.发明授权Multivariable process fluid flow device with fast response flow calculation 有权具有快速响应流量计算的多变量过程流体流量装置公开(公告)号：US08655604B2
公开(公告)日：2014-02-18
申请号：US12606261
申请日：2009-10-27
申请人： Lowell A. Kleven , David E. Wiklund
发明人： Lowell A. Kleven , David E. Wiklund
IPC分类号： G01F1/00
摘要： A process fluid flow device includes process communication circuitry, a processor, and measurement circuitry. The process communication circuitry is configured to communicate with at least one additional process device. The processor is coupled to the process communication circuitry and is configured to execute instructions to provide a plurality of cycles, wherein each cycle includes a number of flow-related calculations. Measurement circuitry 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 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 communicates the computed process fluid flow value to the at least one additional process device.
摘要翻译： 过程流体流动装置包括过程通信电路，处理器和测量电路。 过程通信电路被配置为与至少一个附加过程设备进行通信。 处理器耦合到处理通信电路，并且被配置为执行指令以提供多个周期，其中每个周期包括多个与流量相关的计算。 测量电路可操作地耦合到多个过程变量传感器，以获得每个循环期间差压的指示，并获得静压力和处理流体温度。 处理器被配置为使用电流差压传感器指示和在先前循环期间计算的至少一个流量相关值来计算过程流体流量值。 过程通信电路将计算的过程流体流量值传递给至少一个附加过程装置。
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公开(公告)号：US20130142216A1
公开(公告)日：2013-06-06
申请号：US13537817
申请日：2012-06-29
申请人： Lowell A. Kleven
发明人： Lowell A. Kleven
CPC分类号： G01K1/16 , G01K1/08 , G01K13/02 , Y10T29/49826
摘要： A sensor tube for protecting a sensor inserted into a moving process fluid is provided. The sensor tube includes a process interface section for mounting to a process vessel and an extended section extending from the process interface section to a sealed end. The extended section includes a twisted section having a longitudinal axis. The process interface section and the extended section define a sensor bore configured to receive a sensor therein. The twisted section has a cross section that includes at least three equally sized walls and wherein the walls form helixes along the longitudinal axis of the twisted section.
摘要翻译： 提供了用于保护插入到移动过程流体中的传感器的传感器管。 传感器管包括用于安装到处理容器的过程接口部分和从过程接口部分延伸到密封端部的延伸部分。 延伸部分包括具有纵向轴线的扭转部分。 过程接口部分和延伸部分限定配置成在其中接收传感器的传感器孔。 扭曲部分具有包括至少三个相等尺寸的壁的横截面，并且其中壁沿扭转部分的纵向轴线形成螺旋。
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公开(公告)号：US20080229838A1
公开(公告)日：2008-09-25
申请号：US11724618
申请日：2007-03-15
申请人： Lowell A. Kleven , Mark G. Romo
发明人： Lowell A. Kleven , Mark G. Romo
IPC分类号： G01L9/04
CPC分类号： G01L19/003 , G01L19/0061 , G01L19/0084 , G01L19/0645
摘要： A pressure transmitter comprises a metal wall separating a process pressure chamber from an electronics compartment. The metal wall has a stepped bore with a bore shelf facing the process pressure chamber. A metal header has a stepped outer rim with a header shelf that contacts the bore shelf. The metal header includes at least one electrical feedthrough with a glass-to-metal seal adjacent the stepped outer rim. A welded seal seals the stepped outer rim to the stepped bore.
摘要翻译： 压力变送器包括将过程压力室与电子室隔开的金属壁。 金属壁具有阶梯孔，其中孔架面向过程压力室。 金属集管具有阶梯式外缘，其具有接触孔架的集管架。 金属集管包括至少一个带有与阶梯状外边缘相邻的玻璃 - 金属密封件的电馈通。 焊接密封将阶梯式外缘密封到阶梯孔。
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公开(公告)号：US20070227253A1
公开(公告)日：2007-10-04
申请号：US11728354
申请日：2007-03-26
申请人： Lowell A. Kleven
发明人： Lowell A. Kleven
摘要： A circuit that senses a process variable, comprises a voltage divider that includes first and second capacitances. At least one of the capacitances is varied by the process variable. Divider ends receive modulated potentials, and a divider center tap coupled to a detector. The detector has a detector output representing carrier frequency range components. A control circuit controls a baseband envelope of the modulated potentials as a function of the detector output.
摘要翻译： 感测过程变量的电路包括包括第一和第二电容的分压器。 至少一个电容由过程变量变化。 分频器端接收调制电位，耦合到检测器的分频器中心抽头。 检测器具有表示载波频率范围分量的检测器输出。 控制电路控制调制电位的基带包络作为检测器输出的函数。
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