7ME6520-7HB12-2AA1 西门子流量计的产品说明：
原理：所有的电磁流量计都是基于法拉第电磁感应定律设计：
UM=B.V.D.K测量电压产生于各流体的流向正交的电磁场。由两个电极
获得测量电压
B=磁通过密度，穿过流体介质并正交于流体流向
V=介质流速
D=测量管道内径
K=比例系数或传感器常数
电磁流量计的功能各测量原理
电磁流量计通常由一个内表面不导电的测量管、串联连接且沿管道
径向安装的电磁线圈以及至少两个电极组成。电极插入管壁并与被
测介质相接触。电流通过的磁场线圈产生的一个脉冲电磁场，其磁
通密度B垂直于管道轴线
诊断： 明确的文字标识和故障记录座断功能是仪表的基本功能
故障分类：功能；报警；持久性和重大错误，变送器自检：线圈和
电极测试过载
空管：半满管；低导电率；电极污垢
校验-步骤
SITRANS F M MAGFLO流量计的校验过和包括下列几个测试步骤
变送器测试 
流量计和电缆绝缘测试
传感器磁性测试。
西门子流量计7ME系列一级代理
联系人：朱溪。手机：     QQ:
      QQ: 1250103578
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