Abstract:To improve the measurement precision of charge to mass ratio for droplets or powder,a device based on the mesh target with practical structure and function was designed.By neglecting the value change of the charge to mass ratio caused by the different pesticide solution,the corona charging method was used with water solution replacing pesticide solution.The effect by the measurement system on the precision was studied.The result shows that the main factors affecting the measurement precision are: high-voltage electric field,surroundings,grounding resistance and so on.From the test it was found that a stable and accurate signal can be obtained by replacing the measurement setting in a comparatively stable and separate space,improving the insulation of the electrode and electromagnetism shield of mesh target and measurement system,and reducing the grounding resistance to less than 2 Ω.
陈志刚;孙英琨;储金宇;吴春笃. 网状目标法测量雾滴或粉尘荷质比的精度分析[J]. 排灌机械工程学报, 2006, 24(4): 40-43.
CHEN Zhi-gang, SUN Ying-kun, CHU Jin-yu, WU Chun-du. Study of measuring precision for charge to mass ratio by mesh target. Journal of Drainage and Irrigation Machinery Engin, 2006, 24(4): 40-43.
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