⎝⎛星力捕鱼⎞⎠

⎝⎛星力捕鱼⎞⎠ page Company Profile ⎝⎛星力捕鱼⎞⎠ Product center Quality system marketing network After sales service Recruitment contact us
Flow meter series
Temperature instrument series
Pressure instrument series
Calibration instrument series
Level instrument series
Digital display instrument series
Transmitter instrument series
Wire and cable series
Bridge instrument cabinet series
Pipe fitting valve series

Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
technical article
Knowledge about corrosion-resistant flowmeters
2011-8-23 9:06:23

      是一种高技术产品 ,它 采用 的是 微机智能化技术开发,它 可以 一体型和分体型两大类 Corrosion-resistant flowmeter is a high-tech product . It uses the development of intelligent computer technology. It can be divided into two types: integrated type and split type . 测量导电液体介质, 其中 包括酸 盐等强腐蚀性 及液液固两相流的体积流量。 Corrosion-resistant flowmeters can measure the volumetric flow of conductive liquid media, including acids , alkalis , salts, and other highly corrosive liquid-liquid-solid two-phase flows. 测量流量 因为 垂直于流动方向的磁场 流量 的必经之路 所以 导电性液体的流动 就会 感应出一个与体积流量成正比的电压 When measuring the flow rate , because the magnetic field perpendicular to the flow direction is the only way for the flow rate, the flow of the conductive liquid will induce a voltage proportional to the volume flow rate . 要求被测的流动液体具有 低限度的电导率。 Therefore, the measured liquid is required to have a lower conductivity. 感应通过二个与液体直接接触的电极检出,并 通过电缆传送 放大器,然后 转换成统一 输出信号,这种测量方式具有 下优点: Its induction is detected by two electrodes that are in direct contact with the liquid, and transmitted to the amplifier through a cable , and then converted into a unified output signal. This measurement method has the following advantages:
. 耐腐流量计 测量管内 因没有 阻流件, 所以没有 附加 压力损失 1. There is no additional pressure loss in the measuring tube of the corrosion-resistant flowmeter because there is no blocking member ;
. 因为 信号 在整个充满磁场的空间形成,它是管道截面上的平均值, 由此得出 ,从电极平面传 传感器上游端平面间所需直管段相对 短,长度为5D(D 为导管的内直径 ) 2. Because the signal is formed in the entire magnetic field-filled space, it is the average value on the cross section of the pipeline. From this , it is concluded that the required straight pipe section from the electrode plane to the upstream plane of the sensor is relatively short and the length is 5D Is the inner diameter of the catheter ) ;
. 合理选择电极 及管道内衬材料 的前提下 ,只有管道和电极与被测液体接触, 达到耐腐蚀、耐磨损的要求 3. Under the premise of reasonable selection of the electrode and the lining material of the pipeline , the requirements of corrosion resistance and wear resistance can be achieved only when the pipeline and the electrode are in contact with the measured liquid ;
. 传感器 输出信号是一个与平均流速成线性关系的电动势 4. The output signal of the sensor is an electromotive force that has a linear relationship with the average flow velocity ;
. 耐腐流量计 测量结果 因为 与液体的压力 温度 密度 粘度 电导率等物理参数 没有 关,所以测量精度高 工作可靠。 5. The measurement results of the corrosion-resistant flowmeter are not related to the physical parameters such as pressure , temperature , density , viscosity , and conductivity of the liquid , so the measurement accuracy is high and the work is reliable.