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mso-border-top-alt: solid windowtext .5pt} -->一、产品简介QR型阻旋料位开关是一种用于固态物料（包括粉状、粒状、块状、胶状等）的物位控制器。其利用永磁电机带动叶片旋转，当被检测物料上升至叶片位置时，叶片转动受阻，该阻力通过传动轴传递到接线盒内的检测装置，检测装置则向外输出一个开关信号，并切断电机电源使叶片停止转动。当物料下降时，叶片阻力消失，检测装置便依靠弹簧的拉力恢复到原始状态，叶片恢复旋转状态。在化工、塑料、钢铁、电力、水泥、制药、饲料、食品等行业得到了广泛的应用。二、产品特点它具有密封性好、过载能力强（具有过载保护）、轻便易装、输出触点容量大等特点。针对不同比重的物料可通过调整弹簧的拉力来实现，其接触物料部分全为不锈钢材料。二、主要技术参数供电电源消耗功率触点容量叶片转速力矩物料比重工作温度防护等级叶片材质220VAC4W8A/250VAC SPDT（AB）1RPm（r/m）1.0 kg×cm≥0.5-10～80℃（max：400℃）IP65SUS304