Analysis of Measurement Comparison Results of Portable Three-Cup Anemometers
摘要
Accurate wind speed measurement is of great significance for meteorological forecasting, industrial and agricultural production, and other fields, Metrological comparison serves as a crucial approach to ensure the consistency of wind speed instrument calibration. To evaluate the value-transfer ability of portable three-cup anemometers, the Hubei Meteorological Information and Technical Support Center took the lead in organizing a metrological comparison in 2024, involving 10 laboratories from 8 provinces and cities in the Yangtze River Economic Belt. This comparison adopted a petal-style transfer method, taking the YQY-QXM type portable three—cup anemometer as the transfer standard. Calibration experiments were carried out at multiple wind speed points ranging from 2 to 25 m/s in accordance with the JJG431-2014 protocol. The consistency of the results was evaluated using normalized deviation (En value). Experimental data demonstrated that the absolute value of En for all laboratories was less than 1, achieving a 100% satisfaction rate. The results indicated that the overall calibration capabilities of the laboratories met the requirements, and the value transfer was reliable. This comparison verified the comprehensive capabilities of the participating laboratories and provided an important basis for enhancing the standardization of wind speed measurement.