Device and method for measuring flow rate of fluid
A technology of fluid flow rate and measuring device, which is applied in the direction of fluid velocity measurement, measuring device, velocity/acceleration/impact measurement, etc. It can solve the problems of low applicability and low sensitivity, and achieve real-time measurement, high sensitivity, and simple system structure. Effect
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[0058] Using the measuring device and method, using 200±2kHz ultrasonic waves, adopting a double generator interference source configuration, using a standard wind field to determine a standard curve, and measuring the air velocity at 22°C. Sampling the output voltage every 100ms, continuous sampling for 10s. The wind speed is within the range of 0-3m / s, and the measurement error of 5 wind speeds is less than 0.1m / s, and the standard deviation of each group of data is less than 0.05m / s. The wind speed is in the range of 3-15m / s, 10 wind speeds are measured, the relative measurement error is within 1%, and the standard deviation of each set of data is less than 0.05m / s.
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