Application of Electromagnetic Flowmeter to Industrial Sewage Discharge

Electromagnetic flow meters have been used since the early 50 years. With the development of industry, the problem of environmental pollution has become increasingly serious. Industrial wastewater discharge is highly valued.

First of all, let us understand that the output of the electromagnetic flowmeter 1 and the electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and is independent of the flow state (laminar flow or turbulent flow) under symmetrical distribution. Therefore, the range of the electromagnetic flowmeter is very wide, with a measuring range of up to 100:1, and some even reach a flowable range of 1000:1.

2. The scope of industrial electromagnetic flowmeters is extremely wide, from a few millimeters to several meters. Moreover, there are real-time flow calibration devices with calibers up to 3m in China, laying the foundation for the application and development of electromagnetic flowmeters.

3, the electromagnetic flowmeter instrument is a volume flow measurement instrument, in the measurement process, it is not measured by the medium temperature, viscosity, density in the conductivity (in a certain range). Therefore, after the electromagnetic flowmeter is calibrated by water, it can be used to measure the flow of other conductive liquids.

4. It can measure the flow rate of fouling medium, corrosive medium and suspension liquid-solid two-phase flow. This is due to the unobstructed flow components inside the instrument measuring tube. The only contact with the measured fluid is the measuring tube lining and the electrode. The material can be selected according to the nature of the measured fluid. For example, polytetrafluoroethylene or Teflon liners can be used to measure a variety of corrosive media such as acids, alkalis, and salts; wear-resistant rubber liners are particularly suitable for measuring wear with solid particles. Larger slurry, cement slurry, etc. Liquid-solid two-phase flow, and various suspended liquids with fiber liquids and pulps.

5. The sensor structure of the electromagnetic flowmeter is simple, there are no moving parts in the measuring tube, and there are no throttling parts that hinder the fluid flow. Therefore, when the fluid passes through the flow meter, it will not cause any additional pressure loss, and is one of the lowest energy consumption flow meters in the flow meter.

6. Electromagnetic flowmeter has no mechanical inertia and sensitive response. It can measure instantaneous pulsating flow, and can also measure flow in both directions.