The electromagnetic flowmeter is applicable to which process conditions
Electromagnetic flowmeter is used to measure the flow of various conductive liquids in the industrial process, such as acid, alkali, salt and other corrosive media. Various slurry flow measurements have formed unique application fields. Range scope confirmation: general industrial use measured medium velocity of electromagnetic flowmeter with 2 ~ 4 m/s advisable, under special circumstances, the flow rate should not be less than 0.2 m/s, the highest should be not more than 8 m/s. If the medium containing solid particles, flow rate should be less than 3 m/s, commonly used to prevent excessive friction lining and electrode; For viscous flow, the flow velocity can be greater than 2m/s, and the larger velocity can help to eliminate the viscous material attached to the electrode and improve the measurement accuracy.
1. The sensor structure of the electromagnetic flowmeter is simple, there are no moving parts in the measuring pipe, and there are no restrictor parts that impede the flow of fluid. Therefore, when the flow of fluid through the flow time will not cause any additional pressure loss, it is one of the lowest energy consumption meters in the flow meter.
2. Can measure the flow of the dirty medium, corrosive medium and suspended liquid solid two-phase flow. This is because the instrument measuring tube has no obstructing flow part, and it is only the measuring tube lining and electrode that is contacted by the measuring fluid. The material can be according to the properties of the measured flow body. For example, the lining of polytrifluoroethylene or polytetrafluoroethylene can be used to measure corrosive media such as acid, alkali and salt. Adopt wear-resisting rubber lining, is especially suitable for measuring with solid particle slurry, water slurry, wear a large liquid-solid two phase flow and various liquid with fiber and pulp suspension.
3. 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 in terms of conductivity (in a certain range). Therefore, the electromagnetic flowmeter can be used to measure the flow of other electrical conductivity only after water calibration.
4. The output of the electromagnetic flowmeter is only proportional to the average velocity of the measured medium, and it has nothing to do with the flow state (laminar or turbulent) in the symmetrical distribution. Therefore, the range of the electromagnetic flowmeter is very wide, and the range of measurement can be 100:1, and some can even reach 1000:1.
5. The electromagnetic flowmeter has no mechanical inertia and is sensitive to measure the instantaneous pulsation flow and can also measure the flow in both directions.
6, industrial use very wide range of the calibre of the electromagnetic flowmeter, from a few millimeters to a few meters, and the domestic existing diameter up to 3 m's real flow calibration, which laid a foundation for the application and development of electromagnetic flow meter.