基于SL31型双翻斗雨量传感器的结构原理进行测量误差分析。根据传感器翻斗承水量的不同，采用模拟降水试验的方法比对降水误差，得到在大、小雨强（1 mm/min和4 mm/min）下计量10 mm降水量时的上翻斗与计量翻斗合适的比例关系，从而使得测量误差最小且两种雨强下测量误差一致性最好。结果表明：10 mm降水计量，上翻斗与计量翻斗翻动次数的比例关系为9∶10最合适。比例关系的确定为双翻斗雨量传感器的超差调整提供了技术参考和依据，为雨量观测数据的准确可靠提供了保障。
The article mainly analyzes the measurement 〖JP2〗errors based on the structural principle of the SL31〖JP〗 double tipping bucket rainfall sensor. According to the different water capacities of the sensor tipping bucket, the precipitation errors are compared by a precipitation simulation experiment. The purpose is to obtain the proper proportional relationship between the upper bucket and the metering bucket when measuring 10 mm precipitation under the heavy and light rainfall intensities (1 mm/min and 4 mm/min). Therefore, the measurement errors are minimized and the measurement error consistency is the best under the two rain intensities. The results show that for the 10 mm precipitation measurement, the most appropriate ratio of the number of times the upper bucket turned to that of the measuring bucket turned is 9∶10. The determination of the proportional relationship provides a technical reference and basis for the outoftolerance adjustment of the double tipping bucket rainfall sensor, and provides guarantees for the accuracy and reliability of the rainfall observation data.