seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">电磁流量计（简称EMF ）是利用法拉第电磁感应定律制成的一种丈量导电液体体积流量的仪表。50 年代初电磁流量计(EMF) 实现了产业化应用， 70 年代后期泛起键控低频矩形波激磁方式， 逐渐替换早期应用的工频交流激磁方式， 仪表机能有了很大进步， 得到更为广泛的应用。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">电磁流量计是根据法拉第电磁感应定律进行流量测量的流量计。可测流量范围大。zui大流量与zui小流量的比值一般为20:1 以上，适用的工业管径范围宽，zui大可达3m，输出信号和被测流量成线性， 精确度较高， 可测量电导率≥5μs/cm的酸、碱、盐溶液、水、污水、腐蚀性液体以及泥浆、矿浆、纸浆等的流体流量。但它不能测量气体、蒸汽以及纯净水的流量。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;="" text-align:="" center;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">优点：
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">1、电磁流量计的丈量通道是一段无阻流检测件的光滑直管，因不易梗阻，适用于丈量含有固体颗粒或纤维的液固二相流体，如纸浆、煤水浆、矿浆、泥浆和污水等。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">2、电磁流量计不产生因检测流量所形成的压力损失，仪表的阻力仅是统一长度管道的沿程阻力，节能效果明显，对于要求低阻力损失的大管径供水管道zui为适合。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">3、电磁流量计所测得的体积流量，实际上不受流体密度、粘度、温度、压力和电导率（只要在某阈值以上）变化显著的影响。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">4、与其他大部分流量仪表比拟，前置直管段要求较低。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">5、丈量范围度大，通常为20：1～50：1，可选流量范围宽。满度值液体流速可在0.5～10m/s 内选定。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">6、电磁流量计的口径范围比其他品种流量仪表宽， 从几毫米到3m。可测正反双向流量，也可测脉动流量，只要脉动频率低于激磁频率良多。仪表输出本质上是线性的。
seline;="" background-image:="" initial;="" background-position:="" background-size:="" background-repeat:="" background-attachment:="" background-origin:="" background-clip:="" -webkit-tap-highlight-color:="" transparent;="" appearance:="" none;"="" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 0px; padding: 0px; font-family: "PingFang SC", Helvetica, "Microsoft YaHei", Arial, "sans-serif"; line-height: inherit; vertical-align: baseline; background: rgb(255, 255, 255); -webkit-tap-highlight-color: transparent; appearance: none; color: rgb(51, 51, 51); text-indent: 0px; white-space: normal;">7、易于选择与流体接触件的材料品种，可应用于侵蚀性流体。