National standard for electromagnetic flowmeter

『National standard for electromagnetic flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Is the water meter accurate or the electromagnetic flowmeter accurate? Electromagnetic water meters and electromagnetic flowmeters are two different products. Although their principles are similar, the requirements for electromagnetic water meters are higher. Both have their own strengths and weaknesses. The water meter follows the national standard for civil water meters (GB/T 778), while the electromagnetic flowmeter follows the industrial standard (JB/T 9248-2015). The electromagnetic water meter has an accuracy of 0.

3 and 0.5 levels, while the water meter has an accuracy of 1 and 2 levels. Saying that the water meter accuracy is worse than that of the flowmeter is actually inaccurate. In the water industry, it is required that water meters have a wide range and can measure small flow rates. Electromagnetic flow meters are mostly used for measuring liquids with stable flow rates. However, for the constantly changing water flow in the tap water industry, measurement is relatively difficult, especially for measuring small flow rates. Due to the limitation of its initial flow rate, when the flow rate is too small, the electromagnetic flow meter will not display directly, while the water meter can accurately measure it. To compare the accuracy, it can only be said that in the overlapping range of the two, the accuracy of the electromagnetic flowmeter is higher than that of the electromagnetic water meter, and in the measurement of small flow and large fluctuations, the electromagnetic water meter is superior to the electromagnetic flowmeter. Electromagnetic water meters have better upper and lower limit measurement functions, and are far superior to electromagnetic flow meters for small flow measurement. Due

to the difficulty of measurement, the current caliber is generally below DN300. Firstly, lets talk about the TSD electromagnetic flowmeter. The electromagnetic flowmeter has a simple structure, high measurement stability, no internal flow blocking components, and no pressure loss. Its measurement range is relatively narrow, suitable for measuring stable flow velocity of fluids, and its application is very wide, suitable for fluid measurement in various industries. Its caliber range is wide, and it can be purchased from DN15 to DN3000. In recent years, the price of electromagnetic flow meters has also significantly decreased, making them an economical and practical flow measurement product. Speaking of TSDS electromagnetic water meters, they are mainly used in the water industry. Due to the relatively strict standards for water meters, they have higher requirements for product accuracy and upper and lower limits, so their technical difficulty is much higher than that of electromagnetic flow meters. The caliber of its normally produced products is basically within DN300. At present, due to the core technology being controlled by a few manufacturers, the price of electromagnetic water meters is relatively high. In addition, water meters are closely related to software systems and can analyze water usage in real-time. They are widely used in the water industry and can perform various functions such as zoning measurement and leak detection. So in summary, replacing electromagnetic flow meters with electromagnetic water meters in the water industry may seem feasible on the surface, but it comes at a higher cost and there is simply no suitable water meter to replace for large-diameter products.

2. Measurement requireme

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