Sewage electromagnetic flow meter
Electromagnetic flowmeter is composed of two parts: sensor and converter. It is based on Faraday’s law of electromagnetic induction, used to measure the volume flow of conductive liquid with an electrical conductivity greater than 5μS/cm, is a kind of induction instrument to measure the volume flow of conductive medium.
In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquid such as strong acid and alkali and uniform liquid-solid two-phase suspended liquid such as mud, pulp and paper pulp.
Electromagnetic flowmeter is a kind of induction meter that measures the volume flow of conductive medium in the library according to Faraday’s electromagnetic induction law. It adopts single-chip embedded technology to realize digital excitation. At the same time, CAN field president is used in the electromagnetic flowmeter. Electromagnetic flowmeter in the field to meet the display at the same time, but also can output 4-20mA current signal for recording, regulation and control, has been widely used in chemical, environmental protection, metallurgy, medicine, paper, water supply and drainage and other industrial technology and management.
In addition to measuring the flow of general conductive liquid, electromagnetic flowmeter can also measure the liquid solid two-phase flow, high viscosity liquid flow and the volume flow of salt, strong acid and strong alkali liquid.
Why to measure sewage, we often choose the electromagnetic flowmeter, what is the reason can make the electromagnetic flowmeter so sure, electromagnetic flowmeter in addition to measuring the volume flow of general conductive liquid, but also can be used to measure the strong corrosion liquid such as strong acid and alkali and slurry pulp pulp and other uniform liquid solid two-phase suspended liquid volume flow.
Because there are no obstructing flow parts inside the meter measuring tube, the only contact with the measured body is the measuring tube lining and electrode, and the material can be selected according to the nature of the measured body. For example, with polytetrafluoroethylene as the lining, you can measure a variety of acid, alkali, salt and other corrosive media; The use of wear-resistant rubber as the lining is particularly suitable for measuring the liquid-solid two-phase flow with solid particles, wear larger pulp, cement slurry, and a variety of fiber liquid and pulp suspension.
The diameter range of industrial electromagnetic flowmeters is extremely wide, from a few millimeters to a few meters, and the real flow calibration equipment with a diameter of 2m has been realized, which has laid the foundation for the application and development of electromagnetic flowmeters.
The pressure loss of the electromagnetic flowmeter is small, as long as the lining and electrode material is selected, the service life is naturally long. It can also measure the flow of the positive and negative direction of the fluid, and the response is sensitive, the requirements of the front and back straight pipe section are not high, and it is a promising instrument in the future flow measurement field.
