本SAE航空航天信息报告（AIR）全面概述了主要含水量测量仪器，用于基于设施的结冰研究和飞行中的结冰研究，涵盖了常用的飞机认证结冰范围。它包括有关仪器操作理论、系统误差和限制的信息，以及在使用它们进行云表征时的实际注意事项。本文件不涉及其他感兴趣的结冰云测量，如颗粒大小或雪、雨夹雪或冰雹等现象的测量。

This SAE Aerospace Information Report (AIR) provides a comprehensive overview of primary water content measurement instrumentation, for both facility-based icing research and in-flight icing research, over the range of commonly used aircraft certification icing envelopes. It includes information on the theory of operation of the instruments, system errors and limitations, and practical considerations when using them for cloud characterization. This document does not address other icing cloud measurements of interest, such as particle sizing, or measurement of phenomena such as snow, sleet, or hail.