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technical article
Application of electromagnetic flowmeter in sewage measurement
2011-9-26 16:29:09

  电磁流量计 是一种体积流量测量 仪表,在测量过程中,它不 受被测介质的温度、粘度、密度以 在一定范围 内的 电导率的影响。 1. The electromagnetic flowmeter is a volume flow measuring instrument. During the measurement process, it will not be affected by the temperature, viscosity, density of the measured medium and the conductivity within a certain range . ,电磁流量计只需 经水标定后,就可心用来测量其它导电性液体的流量。 Therefore , the electromagnetic flowmeter can be used to measure the flow of other conductive liquids only after water calibration.

  电磁流量计 的输出与被测介质的平均流速成正比,而 但是 与对称分布下的流动状态 没有关系 2. The output of the electromagnetic flowmeter is directly proportional to the average flow velocity of the measured medium, but has nothing to do with the flow state under a symmetrical distribution . 电磁流量计的量程范围极宽, 它的 测量范围度可达100 1 ,有的甚至 还可以 1000 1 的可运行流量范围。 Therefore, the range of the electromagnetic flowmeter is extremely wide, and its measurement range can reach 100 : 1 , and some can even reach the operational flow range of 1000 : 1 .

  电磁流量计 的传感器结构简单,测量管内没有可动 部件, 而且 也没有任何阻碍流体流动的节流部件。 3. The structure of the sensor of the electromagnetic flowmeter is simple, there are no moving parts in the measuring tube , and there are no throttling parts that hinder fluid flow. 当流体通过流量计时不会引起任何附加的压力损失,是流量计中运行能耗最低的流量仪表之一。 Therefore , it will not cause any additional pressure loss when the fluid passes through the flow meter, and it is one of the flow meters with the lowest energy consumption in the flow meter.

  由于 电磁流量计 测量管内部 没有 阻碍流动 部件,可 测量赃污介质、腐蚀性介质 及悬浊性液固两相流的流量 与被测流体接触的只是测量管内衬和电极, 它的 材料可根据被测流体的性质来选择。 4. As there are no parts obstructing the flow inside the measuring tube of the electromagnetic flowmeter , it can measure the flow of dirty media, corrosive media and suspended liquid-solid two-phase flow . The only contact with the measured fluid is the inner lining of the measuring tube. And electrode, its material can be selected according to the properties of the fluid being measured. 1 用聚三氟乙烯或聚四氟乙烯做内衬,可测量各种酸、碱、盐等腐蚀性介质; 2 采用耐磨橡胶做内衬,特别适合于测量带有固体颗粒的、磨损较大的矿浆、水泥浆等液固两相流以及各种带纤维液体和纸浆等悬浊液体。 For example, ( 1 ) using polytrifluoroethylene or polytetrafluoroethylene as the inner lining can measure various corrosive media such as acid, alkali and salt; ( 2 ) using abrasion-resistant rubber as the inner lining, which is especially suitable for measuring with solid Liquid and solid two-phase flows such as granular and abraded pulp, cement slurry, and various suspended liquids such as fiber-containing liquids and pulp.

  电磁流量计 工业 中使 用的口径范围极宽, 一般 从几个毫米一直到几米,而且国内已有口径达3m 的实流校验设备,为电磁流量计的应用和发展奠定了基础。 5. The caliber range of electromagnetic flowmeters used in industry is extremely wide, generally from a few millimeters to several meters, and there are already real-flow calibration equipment with a caliber of 3m in China, which has laid the foundation for the application and development of electromagnetic flowmeters .

  电磁流量计 没有 机械惯性,反应灵敏,可以测量瞬时脉动流量, 同时 也可测量正反两个方向的流量。 6. The electromagnetic flowmeter has no mechanical inertia and is sensitive in response. It can measure the instantaneous pulsating flow, and it can also measure the flow in both directions.