Rexroth 力士乐 电―液控制式压力继电器 HED8OA-20 200K14KW
电―液控制式压力继电器﹐HED 8型 2X系列
最高工作压力630 bar
-用于板式安装一用于管式连接
-作为垂直叠加元件,安装面按DIN 24 340 J4一水平叠加元件
-5个压力等级一4种调节元件
带内六角的心轴﹑带或不带护罩(护罩可铅封)
带内六角和刻度的心轴﹑
带或不带护罩
带刻度的旋扭·带刻度的有锁旋扭-带接线的插头(指示灯)(另行订货)
型号HED 8电液压力继电器是柱塞式压力继电器。
压力开关主要包括阀体(1)﹐带有阀芯(2)的插件﹐弹簧(3)，调节元件(4)·微型开关(5)如果受监测的压力低于设定值﹐微型开关(5)开始工作。受监测的液压油通过阻尼孔(7)作用于阀芯(2)。阀芯(2)右端由弹簧座(6)支撑﹐阀芯(2)作用于弹簧座(6)的力与无级可调的弹簧力相平衡·弹簧座(6)把柱塞(2)的运动传递给微动开关(5)，在达到设定压力时微动开关(5)释放。这样﹐电路就接通或断开。弹簧座(6)的机械结构在压力突然降低时保护微动开关(5)免遭损害﹐同时在压力过高时防止弹簧(3)被压坏。
注意:
为了延长工作寿命﹐压力继电器应∶实现防震安装·
不受液压的冲击。
阻尼孔(7)在标准型中是安装在开关上的，可以根据需要的进行阻尼配置。
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