电磁流量计能测天然气吗

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◆电磁流量传感器的量程范围极宽，同一台电磁流量计的量程比可达50:1。此外，电磁流量计只与被测介质的平均流速成正比而与轴对称分布下的流动状态（层流或紊流）无关。◆测量介质：导电流体（液体、浆液）；
◆电导率：≥5μS/cm；
◆流速范围：0.1~15m/S；
◆精度等级：0.5级；
◆工作压力：≤6.4MPa；
◆防护等级：IP65，IP67，IP68；
◆通讯：RS-485，Hart；
◆流体温度：E级＜80℃，H级＜180℃；
◆输出信号：标准电流4~20mA，频率0~1kHz，
◆工作电源：DC24V(10VA)；AC220V(10VA)，电池供电；
◆环境温度：25℃~+60℃；
◆环境湿度：IP65：10%~90%；IP68不作要求。
(电磁流量计能测天然气吗)

动态压井法与常规压井法相比有它的优越性。动态压井法压井速度快，在压井过程中套管鞋处压力小，而且压井操作简便。图1显示出了用动态压井法及司钻法压井时套管鞋处的压力差别。用动态法压井时，并非套管鞋在任意井深都承受较高的压力，而是套管鞋位置越深，压井时套管鞋处的压力变化越小。
实施动态压井时，首先应加大排量以增加对地层的平衡力，使溢流减少到最低限度，其?000118588，打开阻流管线，关防喷器。在钻井设计时，井控方法的选择要根据预测的地层压力及各深度所能达到的环空压力损失，钻井所能达到的环空压力损失取决于井径、钻柱尺寸、深度、钻井液性能及泵的性能，这些参数除井径外其它都是可以控制的，而井径可由钻头尺寸及井壁冲刷情况来确定。
(电磁流量计能测天然气吗)

LS-LDE系列电磁流量计由传感器和转换器两部分构成。它是基于法拉感应定律工作的，用来测量电导率大于5μS/cm导电液体的体积流量，是一种测量导电介质体积流量的感应式仪表。除可测量一般导电液体的体积流量外，还可用于测量强酸强碱等强腐蚀液体和泥浆、矿浆、纸浆等均匀的液固两相悬浮液体的体积流量。
工作原理：
电磁流量计测量原理是基于法拉第电磁感应定律。流量计的测量管是一内衬绝缘材料非导磁合金短管。两只电极沿管径方向穿通壁固定在测量管上。其电极头与衬里内表面基本齐平。励磁线圈由双向方波脉冲劢磁时，将在与测量管轴线垂直的方向上产生一磁通量密度为Ｂ的工作磁场。此时，如果具有一定电导率的液体流经测量管，将切割磁力线感应出电动势Ｅ。电动势Ｅ正比于磁通量密度Ｂ,测量管内径d与平均流速V的乘积。电动势Ｅ（流量信号）由电极检出并通过电缆送至转换器。转换器将流量信号放大处理后，可显示流体流量，并能输出脉冲，摸拟电流等信号，用于流量的控制和调节。
(电磁流量计能测天然气吗)

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