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产品特点 product features
1、EMF5000电磁流量计结构简单，无转动部件，因而无摩擦，工作寿命长，计量精度高，性能可靠。
1, the EMF5000 electromagnetic flowmeter has the advantages of simple structure,No rotary parts, So there is no friction, Long working life, High precision measurement, Reliable performance.
2、传感器测量管中无节流和阻流部件，因此无附加压力损失，不存在堵塞问题，适用于测量含有悬浮物、固体颗粒、纤维等的两相流（如泥浆、污水、矿浆、纸浆、等粘性较大的浆液）。
2, the sensor measuring tube without throttle and choke component, Therefore, no additional pressure loss, No blocking problem, Suitable for measuring the containing suspended matter, Solid particles, Two phase flow fiber etc. (such as mud, sewage, slurry, pulp, and viscosity of the slurry).
3、由于信号在整个充满磁场的空间中形成，它是管道截面上的平均值，因此从而电极平面至传感器上游端平面间所需直管段相对较短，长度为10×D(D为管道的内直径)。
3, because the signal is formed in the magnetic field in full space, It is the average cross section of the pipeline, Therefore thus electrode plane to the sensor upstream the end plane straight pipe section with relatively short, Length of 10 × D (D is the internal diameter of the tubes).
4、EMF5000电磁流量计无机械惯性、反应灵敏、可测量瞬时脉动流量，也可与单元组合仪表、计算机配套组成各种自动检测、调节系统和程控系统。
4, EMF5000 electromagnetic flowmeter without the mechanical inertia,Sensitive reaction, Measurement of instantaneous flow rate pulsation, Can also be instrument and unit, Computer matching the composition of a variety of automatic detection, Control system and control system.
5、传感器输出信号是一个与平均流速成精确线形关系的电动势，并且测量结果与液体的温度、压力、密度、粘度、电导率（不小于最低电导率）等物理参数无关，如用水标定的流量计同样适用于其它介质的流量计量，无压力损失无需修正。因此测量精度高、工作可靠。
5, the output signal of the sensor is an exact linear relation with the average velocity of the electromotive force, And the measurement results and the temperature of the liquid, Pressure, density, viscosity, Conductivity (not less than the minimum conductivity) independent physical parameters, Such as water flow metering flowmeter calibration is also applicable to other media, No pressure loss without correction. Therefore, high measuring precision, reliable work.
6、EMF5000电磁流量计采用四电极，内置接地电极，用于非导电管道无需另加接电环。
6, EMF5000 electromagnetic flowmeter with four electrodes, The built-in grounding electrode, For non conductive pipe without additional power connection ring.
7、同时带有4~20mA电流信号输出、脉冲输出及瞬时流量上下限报警输出，另外可选RS485通讯及HART协议，3.6V锂电池供电GPRS无线远传输出。
7, at the same time with a 4~20mA current signal output, Pulse output and instantaneous flow alarm output, Another optional RS485 communication and HART protocol, 3.6V lithium battery GPRS wireless remote output.
8、现场显示瞬时流量，百分比，流速，正反向累计流量和总累计量。
8, the site displays instantaneous flow, Percentage, Velocity, Positive and negative cumulative flow and total cumulant.
9、供电方式有AC220V,DC24V，自带3.6V锂电池。
9, power supply AC220V, DC24V, 3.6V lithium battery.
10、转换器支持中文版及英文版转换设置。
10, converter supports Chinese version and English version conversion settings.
三、技术参数 the technical parameters
环境温度：－40℃～＋85℃
Environmental temperature:－40℃～＋85℃
相对湿度：5％～95％
Relative humidity: 5％～95％
机械振动：频率≤55HZ振幅≤0.55mm
Mechanical vibration: Frequency≤55HZ Amplitude≤0.55mm
环境电磁场：≤400A/m
The electromagnetic field: ≤400A/m
介质温度：≥-40℃,≤＋120℃(介质温度高于70℃建议选分体式)
Medium temperature: ≥-40℃,≤＋120℃(medium temperature higher than 70 ℃ suggested split)
流体电导率：被测流体电导率≥5μs/cm
Fluid conductivity: The measured fluid conductivity≥5μs/cm
测量精度：0.5%
Measurement precision: 0.5%
重复性：0.1％
Repeatability:
功耗：启动时≤300W，正常运行≤50W（包括传感器和转换器）
Power waste. Boot time ≤ 300W, The normal operation of ≤ 50W(including sensors and converters)
工作电源：AC220V,DC24V,3.6V锂电池
The working power supply: AC220V,DC24V, 3.6V lithium battery
四、工作原理 work principle
EMF5000电磁流量计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的非导磁合金短管。两只电极沿管径方向穿通管壁固定在测量管上。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励磁时，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流体流经测量管，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，模拟电流等信号，用于流量的控制和调节。
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