Anyone who has used an electromagnetic flowmeter to measure cement concrete?

An electromagnetic flowmeter uses Faraday’s law of electromagnetic induction to measure the flow rate of conductive fluids, and it is suitable for measuring the flow velocity of conductive liquids such as water, acids, and bases. However, cement concrete is a high-concentration suspension containing a large number of solid particles and bubbles, which presents the following challenges for electromagnetic flowmeters when measuring it: 1. Conductivity: The conductivity of cement concrete may not be sufficient to allow electromagnetic flowmeters to function properly, as the solid particles in it reduce its overall conductivity. 2. Signal interference: The presence of particles and bubbles can interfere with the electromagnetic signal of the electromagnetic flowmeter, thereby affecting the accuracy of measurements. 3. Wear and blockage: Cement concrete has a certain degree of abrasiveness; long-term use can lead to wear of the flow meter’s lining and electrodes, and solid particles can also cause blockages in the pipes. This results in poor actual performance, and the desired accuracy and stability may not be achieved. Although specially designed flowmeters can reduce these problems to some extent, such as by using wear-resistant materials for the lining and electrodes, electromagnetic flowmeters are not an ideal choice for applications involving cement concrete. The customer’s comment that “the previous tests were also inaccurate” might be due to the aforementioned issues. They may be installed merely to meet certain regulatory requirements, without the expectation of obtaining highly accurate measurement results. Typically, when measuring high-concentration suspensions such as those in cement concrete, other types of flow measurement techniques may be considered, such as mass flow meters or other special flow meters capable of handling liquids containing solid particles. If you are a meter seller and wish to provide suitable solutions for customers, it is recommended that you gain a thorough understanding of their actual application requirements, including the physical properties of the fluid, operating conditions, and requirements for measurement accuracy. Then, work together with specialized manufacturers of flow measurement equipment or technical experts to find a more appropriate flow meter technology. .

Thank you, your answer was very useful to me. . Extremely comprehensive

Slurry-type electromagnetic flowmeter, with ETFE as the lining and 316L electrodes; however, its accuracy is likely not very high

The electromagnetic flowmeter used by client Party A in the past was very inaccurate; it was installed merely to meet inspection requirements