微波式土壤水分测定仪及其定标

Microwave Instrument for Moisture Measurement in Soils and Its Calibration

本文介绍了一种微波式土壤水分测定仪并说明了其定标原理。经验证实验可知其主要性能是在0～12％的含水范围内,最大测量误差为0.3％,最后分析了几何因素,温度因素和密度因素对测量结果的影响。

A microwave instrument for moisure measurement in soils is presented and its calibration principle is discussed. By laboratory test, the maximal measurement error is 0.3% for 0~12% moisture content of soils. Finally, effects of geometry, temperature and density factors of samples on measurement results is analysised.