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公开(公告)号：US4806016A
公开(公告)日：1989-02-21
申请号：US49628
申请日：1987-05-15
CPC分类号： G01D5/268 , G01F1/3245 , G01P13/00
摘要： The optical displacement sensor modulates intensity of the light beam as a function of the physical displacement. The sensor includes a reflector positioned in a path of the light beam between a light source and a light detector. The reflector has a non-reflective portion surrounded by a reflective portion. Relative movement (displacement) of the beam and the reflector occurs as a function of a parameter which is being sensed. In a normal (no displacement) condition, the non-reflective portion can be positioned with respect to the light beam so that intensity of the light beam received by the detector is at a minimum, and the sensor is operating in a darkfield mode. Displacement from the normal position causes an increase in the light intensity received by the detector.
摘要翻译： 光学位移传感器根据物理位移调制光束的强度。 传感器包括位于光源和光检测器之间的光束路径中的反射器。 反射器具有由反射部分包围的非反射部分。 光束和反射镜的相对运动（位移）作为正被感测的参数的函数发生。 在正常（无位移）状态下，非反射部分可以相对于光束定位，使得由检测器接收的光束的强度处于最小值，并且传感器以暗场模式操作。 从正常位置的位移导致由检测器接收的光强度的增加。
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公开(公告)号：US4926695A
公开(公告)日：1990-05-22
申请号：US96954
申请日：1987-09-15
申请人： Lowell A. Kleven , Gary P. Corpron
发明人： Lowell A. Kleven , Gary P. Corpron
IPC分类号： G01F1/32
CPC分类号： G01F1/3263
摘要： A vortex sensor used in a vortex flowmeter that has a single sensing diaphragm parallel to the direction of flow that is sensitive to differential pressures caused by vortices shed by a vortex shedding bar associated with the sensing diaphragm. A beam is attached to the sensing diaphragm and it transfers the deflecting motion of the sensing diaphragm due to differential pressures to a sensor external to the flow passageway. The sensor provides an output indicating motions of the beam caused by the beam pivoting when the sensing diaphragm deflects. The beam preferably is pivoted on a relatively rigid, fluid-tight isolator diaphragm with one end of the beam on the outside of the isolator diaphragm. The sensing diaphragm which is used to measure differential pressure rejects variations in the static pressure, that is, increases and decreases of the static pressure on both sides of the diaphragm, which is a common source of problems with existing vortex flowmeter sensors.
摘要翻译： 在涡街流量计中使用的涡流传感器，其具有平行于流动方向的单个感测膜片，该流动方向对由与感测膜片相关联的涡流脱落杆流出的涡流引起的压差敏感。 光束附着到感测膜片上，并且由于差压将传感膜片的偏转运动传递到流动通道外部的传感器。 传感器提供一个输出，指示当感测光阑偏转时由光束转动引起的光束的运动。 梁优选地枢转在相对刚性的，流体密封的隔离隔膜上，其中梁的一端在隔离隔膜的外侧。 用于测量差压的传感膜片可以抑制静压力的变化，即隔膜两侧的静压力的增加和减少，这是现有涡街流量计传感器常见的问题。
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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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公开(公告)号：US08800373B2
公开(公告)日：2014-08-12
申请号：US13026790
申请日：2011-02-14
申请人： Lowell A. Kleven
发明人： Lowell A. Kleven
IPC分类号： G01N29/28
CPC分类号： G01N29/14 , F16T1/48 , G01N29/04 , G01N29/228 , G01N29/2462 , G01N29/28 , G01N29/326 , G01N2291/0234 , G01N2291/0289 , G01N2291/2695
摘要： A transducer assembly includes an acoustic sensor element and an acoustic waveguide. The acoustic waveguide includes a rotatable acoustic coupler, a tube, and a foot. The foot has a mounting surface that is mountable on a fluid conduit. A circuit assembly couples to acoustic sensor element and provides a diagnostic output.
摘要翻译： 传感器组件包括声学传感器元件和声波导。 声波导包括可旋转的声耦合器，管和脚。 脚具有可安装在流体导管上的安装表面。 电路组件耦合到声学传感器元件并提供诊断输出。
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公开(公告)号：US07724001B2
公开(公告)日：2010-05-25
申请号：US11728354
申请日：2007-03-26
申请人： Lowell A. Kleven
发明人： Lowell A. Kleven
IPC分类号： G01R27/26
摘要： A circuit that senses a process variable includes 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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公开(公告)号：US20090072994A1
公开(公告)日：2009-03-19
申请号：US11854732
申请日：2007-09-13
申请人： Lowell A. Kleven , John P. Schulte
发明人： Lowell A. Kleven , John P. Schulte
IPC分类号： G08C19/06
CPC分类号： G01D21/00
摘要： A process transmitter includes at least one sensor which monitors a process variable, and analog-to-digital (A/D) converter circuitry coupled to the at least one sensor and configured to provide process variable data indicative of process variable values. A digital signal processor (DSP) is coupled to the A/D converter circuitry to receive the process variable data. The DSP comprises a co-processor configured to receive and perform calculations on the process variable data from the A/D converter circuitry to generate output data. Communications circuitry of the process transmitter is configured either to control communication over loop wiring which can be coupled to the process transmitter, or to control wireless communications with the process transmitter. A microprocessor, separate from the co-processor of the DSP, is coupled between the co-processor and the communications circuitry to control movement of the output data from the DSP to the communications circuitry.
摘要翻译： 过程变送器包括至少一个监控过程变量的传感器，以及耦合到所述至少一个传感器并被配置为提供指示过程变量值的过程变量数据的模数（A / D）转换器电路。 数字信号处理器（DSP）耦合到A / D转换器电路以接收过程变量数据。 DSP包括协处理器，其被配置为接收并执行来自A / D转换器电路的过程变量数据的计算以产生输出数据。 过程变送器的通信电路被配置为控制可以耦合到过程变送器的环路布线的通信，或者控制与过程变送器的无线通信。 与DSP的协处理器分离的微处理器耦合在协处理器和通信电路之间，以控制输出数据从DSP到通信电路的移动。
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公开(公告)号：US06539981B1
公开(公告)日：2003-04-01
申请号：US08717995
申请日：1996-09-26
IPC分类号： F16L914
摘要： A flow tube has a metal outer tube and is lined with an ETFE fluoropolymer that is resistant to corrosive chemicals and mechanical damage even at high temperatures. The inner surface of the metal tube is coated with a bonding metal that can be securely bonded to the outer metal tube and also forms a strong bond with ETFE fluoropolymer. After the bonding metal has been applied, a layer of a desired thickness of the ETFE fluoropolymer is molded in place to form an inner liner for the flow tube.
摘要翻译： 流量管具有金属外管，衬有ETFE含氟聚合物，即使在高温下也能抵抗腐蚀性化学物质和机械损伤。 金属管的内表面涂覆有可以牢固地结合到外金属管上并且与ETFE含氟聚合物形成牢固结合的粘合金属。 在施加接合金属之后，将ETFE含氟聚合物的所需厚度的层模制到适当位置以形成流管的内衬。
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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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