中子水分仪测量方式的改进研究

Optimization on Measurement Method for Neutron Moisture Meter

摘要: 中子水分仪在工业现场应用时，有时会因被测量物料中水分不均匀而引起测量误差。本工作利用蒙特卡罗方法模拟了中子水分仪应用中由于物料中水分不均匀所带来的测量误差。为了减小由于水分不均匀带来的测量误差，提出了一种新型的测量方式，即透射加散射测量方式。实验证明，透射加散射测量方式能够有效降低中子水分仪在被测量物料水分分布不均匀情况下的测量误差。该方法用于水分分布复杂条件下的现场测量还需作进一步的分析和研究。

Abstract: When the water in the measured material is nonuniformity, the measured results of the neutron moisture meter in the field may have errors， so the measured errors of the moisture meter associated with the water nonuniformity in material were simulated by Monte Carlo method. A new measurement method of moisture meter named “transmission plus scatter” was put forward. The experiment results showed that the new measurement method can reduce the error even if the water in the material is nonuniformity.