Nowadays, many flow meters on the market are not able to measure fluids in sewage, if the staff need to measure the flow in sewage, they usually use electromagnetic flow meters.
Today Supmea, the electromagnetic flowmeter manufacturer, explains why electromagnetic flow meters are suitable for wastewater measurement. Electromagnetic flow meter is mainly divided into two parts: flow sensor and transmitter. The sensor measuring tube is equipped with an excitation coil on the upper and lower sides of the measuring tube. After the excitation current flows, the magnetic field passes through the measuring tube, and a pair of electrodes are mounted on the inner wall of the measuring tube in contact with the liquid phase to induce an electric potential, which is sent to the transmitter. Categorized by the method of assembly of the converter and sensor, there are two types, separate and integrated.
In terms of wastewater treatment technology, most of the large diameter electromagnetic flow meters are split, some underground and some above ground. The working principle of the electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, when the conductive metal bar moves at a certain speed perpendicular to the direction of the magnetic field lines, an induced voltage will be generated. Electromagnetic flowmeter has a prerequisite that the measured liquid must be electrically conductive, conductivity below the threshold will occur measurement error so can not be used, beyond the threshold even if the change can be measured, the value of the error change is not significant. General sewage conductivity is very high, due to the ions contained therein, which is precisely the electromagnetic flowmeter is used to measure the advantages of one of the sewage.
Some of the characteristics of the electromagnetic flowmeter itself is also different from other flowmeters, electromagnetic flowmeter is more suitable for the measurement of sewage, electromagnetic flowmeter stability, not affected by temperature, pressure, viscosity and other external factors, the pressure in the measurement tube will not shorten or highlight. Electromagnetic flowmeter has a compact structure, small size, device, operation, maintenance are very convenient, measurement system selection of intelligent planning, good sealing of the whole, can be in the worse environment normal operation.
Supmea produces electromagnetic flowmeter for many years, if you encounter any problems in the use of electromagnetic flowmeter, feel free to contact Supmea staff, we help you answer.
Hangzhou Economic Development Area，Hangzhou 310018，China
