声学多普勒流速仪计量检定工作分析

Analysis on Calibration of Acoustic Doppler Current Meter

从水量准确计量为切入点,根据声学多普勒流速仪推广使用中存在的计量检定问题,结合水利水文专业计量体系的促进和发展,论证了声学多普勒流速仪计量检定工作开展的必要性。从声学多普勒流速仪工作原理出发,探讨了利用水槽检定该类仪器的原理和方法,分析了检定方法的可行性。研究说明,利用现有水槽检定还存在一定难点,如何利用现有水槽,还需要进行试验。

Because of the importance of accurate water quantity measurement,and according to existing calibration problems of acoustic Doppler current meter during its popularization,the author demonstrates the necessities of carrying out acoustic Doppler current meter calibration with consideration about development of water resources and hydrology metrological system.According to operation principle of the meter,the paper makes a research in calibration theory and methods for the instrument by calibration tank,then analyzes feasibility of the calibration methods.The study illustrates that there are still some difficulties in calibration of the meter by a existing tank,and that how to use the tank needs more experiments.