罗斯蒙特压力变送器工作原理ppt课件

罗斯蒙特压力变送器工作原理,2006.07,EmersonProcessManagementRosemountDivisionConfidentialSlide1,压力变送器的基本组成,传感器电子电路,压力传感器,电子电路,压力的传感,信号处理及输出显示模拟智能/HART现场总线,EmersonProcessManagementRosemountDivisionSlide2,Rosemount1151,Rosemount3051C,三代罗斯蒙特专利传感器,EmersonProcessManagementRosemountDivisionSlide3,用于罗斯蒙特压变的两种技术,Capacitance(差分电容式传感器)Piezoresistive(压敏电阻式传感器),EmersonProcessManagementRosemountDivisionSlide4,差分电容传感技术的发展,1969变化开发成功并进入市场.至今为罗斯蒙特所特有的技术.对单侧过压具有独特的优势.三代技术改进.,EmersonProcessManagementRosemountDivisionSlide5,电容式传感器的工作原理,感压极板,钢性绝缘材料,固定电容极板,过程隔离模片,仪表灌充液,信号引出线,固定电容极板和位于中间的感压极板组成两个电容室过程压力通过导压灌充液/硅油传导至感压极板感压极板产生与压力基本成正比的位移该位移使两电容室的差分电容值改变差分电容由电子电路转换为与电容的介电常数无关的毫伏信号,进入后面的放大及信号处理板,EmersonProcessManagementRosemountDivisionSlide6,智能变送器是如何工作的?,温度及传感器的特征化数据库,温度补偿传感器,传感器的特性曲线及标定数据,压力,微处理器,EmersonProcessManagementRosemountDivisionSlide7,硅可变电阻式传感器的结构及工作原理,用于表压及绝压测量传感器表面生成集成化的惠斯登电桥压力作用使传感器表面产生形变该形变引起可变电阻桥臂的失衡电桥的失衡电流经放大处理处理后的信号经A/D转换送往微处理器进行量化量化数据经D/A电路转换为4-20MA.,EmersonProcessManagementRosemountDivisionSlide8,针对不同测量的两种基本传感器,2024208811513051C3051T3051S3051ST,DPGPAP,Saturn,Saturn,EmersonProcessManagementRosemountDivisionSlide9,硅传感器的内部结构,3051T的模头,EmersonProcessManagementRosemountDivisionSlide10,3051C的共平面法兰模头,FirstGeneration1986-1996,SecondGeneration1996-,ThirdGeneration1996-,3051C密封结构,3051C封焊式弹性伸缩中间信号电缆引出结构,3051S气密封装及单电子板设计超级模头(无中间信号引出),EmersonProcessManagementRosemountDivisionSlide11,与3051C/3051SC配套的过程连接件及部分一次元件,Flanges,Manifolds,Level,Primaries,EmersonProcessManagementRosemountDivisionSlide12,生产线的温度及现行化工艺装备,21点线性化,3to5温度补偿,EmersonProcessManagementRosemountDivisionSlide13,3051系列的多种输出选项,Analog4-20mAor1-5VdcHART/Smart4-20mAor1-5VdcFoundationFieldbusDigitalProfibusDigital,EmersonProcessManagementRosemountDivisionSlide14,375型HART/FF手操器支持3051的组态调试,覆盖全部智能仪表的调试工具同时用于现场总线仪表,EmersonProcessManagementRosemountDivisionSlide15,1151/3051/3051S的接线端子,TEST,+,-,TEST,+,-,1151,3051,3051S,3051S带现场清零及量程校验钮,EmersonProcessManagementRosemountDivisionSlide16,LiningUpRosemountsModelandMeasurementTypebyTechnology,2024208811513051C3051T3051S3051ST,Analog4-20mAAnalog1-5VdcSmart/HartFieldbusProfibus,EmersonProcessManagementRosemountDivisionSlide17,LiningUpRosemountsModelandMeasurementTypebyTechnology,2024208811513051C3051T3051S3051ST,DPGPAP,Saturn,Saturn,EmersonProcessManagementRosemountDivisionSlide18,FillintheBlocks,4-20mAw/HART,Communications,EmersonProcessManagementRosemountDivisionSlide19,ReferenceMaterial,EmersonProcessManagementRosemountDivisionConfidentialSlide20,3051SHARTBlockDiagram,EmersonProcessManagementRosemountDivisionSlide21,3051CFoundationFieldbusPressureTransmitter,EmersonProcessManagementRose