According to the working principle of the elbow flowmeter, the standardization work of the elbow flowmeter is proposed to standardize the size of the flowmeter hardware structure. Introduce the flow coefficient α value of multiple flowmeters with the same pipe diameter under the premise of strictly guaranteeing that the characteristic structure size of the elbow pipe flowmeter is equal to the ratio (R/D), and its performance is very good. Consistency; through the comparison of different diameter flowmeters, the flow coefficient was found to increase correspondingly with decreasing diameter. This confirms that the determination of the size of the hardware structure can be used as the primary issue for the standardization of such flow meters.
Through years of experimental research, the author has come to the conclusion that the precision-machined elbow flowmeter has good reproducibility. Because the working principle and mathematical model are very similar to those of all differential pressure flowmeters, people always want to make a step forward on the road to standardization and achieve a differential pressure flowmeter like the ISO 5167 international unified standard. No actual flow is required. Calibration can be used for accurate metering ideals to meet the needs of large-scale applications.
Fortunately, modern science and technology have provided equipment and technical conditions for achieving consistent structural dimensions in the mass production of elbow flowmeters , providing a reliable basis for the research and production of elbow flowmeters , and thus radically changing the bends. Tube flowmeter research results are difficult to unify the chaos.
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