公开(公告)号：EP3022532A4

公开(公告)日：2017-04-05

申请号：EP13889522

申请日：2013-07-19

申请人： ROSEMOUNT INC ,  GAO YANGHUI ,  WANG HAIPENG

发明人： GAO YANGHUI ,  WANG HAIPENG

IPC分类号： G01F1/58 ,  G01F1/60

CPC分类号： G01F1/588 ,  G01F1/586 ,  G01F1/60

摘要： A magnetic flowmeter for measuring flow rate of a process fluid includes: a magnetic coil arranged to apply a magnetic field to the process fluid. A pair of electrodes electrically couple to the process fluid and are arranged to sense a voltage induced in the process fluid related to the applied magnetic field and the flow rate of the process fluid. A flow tube of a non-conductive material is arranged to receive a flow of the process fluid therethrough. The flow tube carries the magnetic coil and the pair of electrodes. Flow meter circuitry applies a current to the magnetic coil and receives the voltage sensed by the pair of electrodes. A magnetic field spreader is positioned proximate the magnetic coil and is arranged to spread the magnetic field emanating from the magnetic coil and direct the magnetic field into the flow tube. An exterior wrapper extends around the assembly and completes a magnetic circuit.

摘要翻译： 用于测量处理流体的流量的磁流量计包括：设置成对过程流体施加磁场的磁性线圈。 一对电极电耦合到过程流体并被布置成感测与施加的磁场相关的过程流体中感应的电压和过程流体的流速。 非导电材料的流管被布置成接收过程流体流过其中。 流管承载电磁线圈和一对电极。 流量计电路向电磁线圈施加电流并接收由该对电极感测的电压。 磁场扩展器位于磁性线圈附近，并且布置成扩展从磁线圈发出的磁场并将磁场引导到流管中。 外部包装件围绕组件延伸并且完成磁路。