稻穀電子式水分計施檢規範之評估

Evaluation of Testing Rules of Electronic Moisture Meters for Rough Rice

陳加忠(Chia-Chung Chen) ； 許又仁(You-Ren Xu) ； 林玉萍(Yu-Ping Lin)

《農林學報》 49卷4期 (2000/12) Pp. 63-83

https://doi.org/10.30089/JAF.200012.0005

摘要

電子式稻穀水分計由於其簡易與快速量測之特性，已被廣泛使用。為確立此型水分計之準確性，水分計之施檢規範必須加以建立。此研究測試兩種電阻式水分計與一種電容式水分計對於不同稻穀品種之量測性能。電阻式水分計之適用範圍為22%以內，以固定數值修正量測值可改善其準確性能。電容式水分計之量測範圍可達30%，量測數據與標準值之關係為曲線分佈。建立校正方程式可改善其量測準確性於1.0%。兩種水分計之佳能符合國際計量組織二級標準。

關鍵字

稻穀 ； 合水率 ； 電子式水分計

並列摘要

Electronic moisture meter is easy in operation. The detecting process is very rapidly. It is widely used to measure the moisture content of rough rice in Taiwan. In order to ensure the accuracy of moisture meters, the testing rules for these meters need to be evaluated. In this study, two types of conductance meter and one capacitance meter were adopted to test their performance for different varieties of rough rice. The results indicated conductance meters only valid with the moisture range below 22% (w. b.). The accuracy could be improved by modifying the read values with a fixed numeric value. The measuring range of capacitance meter can higher than 30% (w. b.). The relationship between standard values and reading values is clear pattern. The establishment of calibration equation can improve the accuracy to 1.0%. The performance of these meters corresponded to the Class II standards of OIML testing rules.

並列關鍵字

Rough rice ； Moisture content ； Electronic moisture meter