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在陕西、山东、湖南、广东、云南、四川六省测试点的自然收购季节中,列入精选的国产粮食水分快速测定仪,电容式SW S-5型、L SC-3型、JLS-3型和电阻式LSKC-4A型、TL-4型五种仪器进行了小麦、稻谷、玉米的测试.结果表明:电阻式产品取样量小,代表性差,大粒粮食粉碎困难,温度人工补尝麻烦;电容式产品取样量大,代表性强,粮食不粉碎,分度值小,粮种、水分测定范围广,温度自动补尝.准确度、重现性总得分,数码电容式优于电阻式和电容刻度盘式产品.参考计算机处理的方差值,误差序列图和概率统计图表明:电容式优于电阻式产品. 实验表明:电阻式和电容式产品在使用之前,均应以当地有代表性的粮种,在一定水分范围内校正仪器.在测试中,仪器共有的特点是:其重现性效果,小粒粮(小麦,稻谷)优于大粒粮(玉米).
In the season of natural acquisition of test points in six provinces of Shaanxi, Shandong, Hunan, Guangdong, Yunnan and Sichuan, a selection of domestically produced fast food moisture analyzers, capacitive SW S-5, L SC-3, JLS- 3, LSKC-4A and TL-4 were tested in wheat, paddy and maize.The results showed that the sample size of resistive products was small, the representativeness was poor, the crushing of large grain food was difficult, and the temperature artificial remedy was troublesome ; Capacitive products sampling large, representative of the strong, the food is not comminuted, indexing small, grain, moisture measurement range, the temperature automatically make up. Accuracy, reproducibility of the total score, digital capacitance is better than resistance And capacitance dial products.Referring to the computer processing variance value, the error sequence diagram and the probability chart shows that the capacitance is better than the resistance type product.The experiment shows that the resistance type and the capacitance type product should be used locally The representative foodstuffs are calibrated within a certain range of water, and in the test, the instrument has the following characteristics: reproducible effect, small grain (wheat, rice) is better than large grain (corn).