Advantages of Electromagnetic Water Meters​

1. High Measurement Accuracy​

• Operating based on Faraday’s law of electromagnetic induction, when conductive water flows through the magnetic field generated by the meter, an induced electromotive force proportional to the flow velocity is produced. High – end models can achieve a measurement accuracy of up to ±0.2% or even higher. In contrast, ultrasonic water meters are affected by factors such as water temperature, pressure, air bubbles, and suspended particles, with an accuracy generally in the range of ±0.5% – ±1%. Therefore, electromagnetic water meters are more suitable for scenarios with high – precision flow measurement requirements.​

2. Good Stability under Complex Conditions​

• The measurement principle of electromagnetic water meters is not significantly affected by the viscosity of water, density changes within a certain range, or the composition of water (as long as it is conductive). In industrial water systems, even if the water quality changes due to the addition of chemicals or the presence of a small amount of impurities, it can still provide stable readings. However, when conditions such as water temperature change, the measurement accuracy of ultrasonic water meters is prone to fluctuations. This is because water temperature affects the propagation speed of ultrasonic waves in water, thus affecting the time – difference measurement and flow accuracy.​

3. Wide Range of Applicable Fluids​

• Electromagnetic water meters can measure various conductive fluids, including slightly dirty water, water with a certain amount of dissolved salts, and some industrial wastewater with conductive properties. They are suitable for industrial processes, water treatment plants, and urban water supply systems where the water quality may not be pure. Ultrasonic water meters are more sensitive to suspended solids or contaminants in water. High – concentration suspended solids can scatter or absorb ultrasonic waves, resulting in inaccurate measurements. Therefore, when the water contains a large amount of impurities, electromagnetic water meters have obvious advantages.​

4. Low Pressure Loss​

• The internal structure of electromagnetic water meters has no moving parts and no obstructions in the flow path, resulting in extremely low pressure loss during water flow. In large – scale water supply systems, reducing pressure loss is crucial for reducing the energy consumption of water pumps. Due to different designs, ultrasonic water meters, especially those with complex flow – guiding structures, have relatively higher pressure losses. To maintain the same flow rate, more energy is required, which will increase operating costs in the long term.