The benefits of selecting electromagnetic flowmeters for sewage measurement

Electromagnetic flowmeter The benefits of sewage measurement: 1) Electromagnetic flowmeter is a volume flow measuring instrument. During the measurement process, it is not affected by the temperature, viscosity, density, and conductivity (in a certain range) of the measured medium. Therefore, the electromagnetic flowmeter can be used to measure the flow of other conductive liquids only after being calibrated with water. 2) The output of the electromagnetic flowmeter is only related to the measured medium. The benefits of the electromagnetic flowmeter for measuring sewage: 　　 1) The electromagnetic flowmeter is a volume flow measuring instrument. During the measurement process, it is not affected by the temperature, viscosity, and density of the measured medium. Take the influence of conductivity (in a certain range). Therefore, the electromagnetic flowmeter can be used to measure the flow of other conductive liquids only after being calibrated by water.　　2) The output of the electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and has nothing to do with the flow state (laminar or turbulent) under a symmetrical distribution. Therefore, the electromagnetic flowmeter has a very wide range, and its measurement range can reach 100:1, and some even reach an operable flow range of 1000:1. 3) The sensor structure of the electromagnetic flowmeter is simple, and there are no moving parts in the measuring tube, nor any throttling parts that hinder the flow of fluid. Therefore, when the fluid passes through the flow meter, it will not cause any additional pressure loss. It is one of the flow meters with the lowest energy consumption in the flow meter.　　4) It can measure the flow of dirty media, corrosive media and suspended liquid-solid two-phase flow. This is because there are no parts obstructing the flow inside the measuring tube of the instrument, and only the inner lining and electrode of the measuring tube are in contact with the measured fluid. The material can be selected according to the nature of the measured fluid. For example, using polytrifluoroethylene or polytetrafluoroethylene as the inner lining can measure various corrosive media such as acids, alkalis, and salts; using wear-resistant rubber as the inner lining is particularly suitable for measuring wear and tear with solid particles Larger liquid-solid two-phase flow such as mineral pulp and cement slurry and various suspended liquids such as fibrous liquid and pulp.　　5) The diameter range of industrial electromagnetic flowmeters is extremely wide, ranging from several millimeters to several meters, and there are real-flow calibration equipment with a diameter of 3m in China, which lays the foundation for the application and development of electromagnetic flowmeters.　　6) The electromagnetic flowmeter has no mechanical inertia, and is sensitive. It can measure the instantaneous pulsating flow rate and the flow rate in both positive and negative directions.