When measuring the conductive liquid with impurities, the selection of a suitable flowmeter needs to consider the conductivity of the liquid, the nature of the impurities and the measurement accuracy. In this case, the electromagnetic flowmeter is a more suitable choice.
Advantages of electromagnetic flowmeters
Wide measuring range: Electromagnetic flowmeters can measure conductive liquids with electrical conductivity greater than 5μs/cm, which includes a variety of common industrial conductive liquids.
High precision: The measurement accuracy of the electromagnetic flowmeter is usually high, which can reach 0.5 level, and can meet the occasions with high requirements for measurement accuracy.
Wide applicability: In addition to measuring the flow of general conductive liquid, electromagnetic flowmeters can also be used to measure strong acid, strong alkali and other corrosive liquids and uniform liquid containing liquid-solid two-phase suspension, such as mud, pulp, pulp and so on. Therefore, for conductive liquids with impurities, electromagnetic flowmeters are also suitable.
Non-contact measurement: The measuring process of the electromagnetic flowmeter is not in direct contact with the fluid, so it will not damage the measuring element due to impurities in the fluid, improving the stability and reliability of the measurement.
Multi-electrode planning: Some intelligent electromagnetic flowmeters use multi-electrode planning, which can further ensure measurement accuracy and reduce the impact of impurities in the fluid on the measurement results.
The working principle of electromagnetic flowmeter
Electromagnetic flowmeters work based on Faraday's law of electromagnetic induction. A magnetic field is added on both sides of the measuring pipe, and the magnetic field line is cut when the measured conductive liquid flows through the pipe, and the induced potential is generated on the two electrodes, the size of which is proportional to the speed of the fluid. By measuring this induced potential, the flow rate of the fluid can be calculated.
Matters needing attention
Conductivity requirements: The conductivity of the measured liquid should be greater than 5μs/cm to ensure that the electromagnetic flowmeter can work properly.
Impurity effect: Although electromagnetic flowmeters can measure conductive liquids containing impurities, the type and concentration of impurities may have a certain impact on the measurement results. Therefore, in practical applications, it is necessary to evaluate and calibrate according to the specific situation.
Installation and maintenance: The installation and maintenance of electromagnetic flowmeters need to be carried out in accordance with relevant specifications to ensure the accuracy of measurement results and the long-term stable operation of the equipment.
In summary, for the measurement of conductive liquid with impurities, electromagnetic flowmeter is a more suitable choice. Its high precision, wide application range and non-contact measurement characteristics enable it to meet the needs of a variety of industrial applications.
