Electromagnetic flowmeter is mainly used to measure the volume of liquid within the closed pipe conductivity, electromagnetic flowmeter provides the minimum flow velocity of not less than 0.5m / s, normally in the 2 ~ 4m / s, the maximum not more than 8m / s, Therefore, we choose the diameter of the electromagnetic flowmeter should be fully taken into account in ensuring the accuracy of electromagnetic flowmeter measurement, select the appropriate pipe size
Suppose there is a 500m3 of a pool of water required within 4 hours to drain the water pump, how to determine how much diameter to use the pipeline.Through the above parameters can determine the required flow meter flow range is: 500m 3 divided by 4 hours is 125m 3 / h. Through the flow can calculate the approximate range of pipe diameter, namely: πr 2 × flow rate (0.5 ~ 8m / s) = 125m 3 / h, by calculating the 125m 3 / h to know the water, the caliber range of 0.075m ~ 0.2975m that DN80 ~ DN300, and then taking into account the electromagnetic flowmeter accuracy requirements, the election flow rate of 2 ~ 4m / s is the best, by calculating the caliber of 0.105m ~ 0.149m, that DN100 ~ DN150, taking into account investment and other factors, I can determine the election DN100 more suitable.
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