西门子【6SL3120-1TE26-0AB0】_厦门光沃自动化设备有限公司

该液位计设有一容纳浮球的腔体称其为主体管或导向管，磁翻板液位计通过法兰或其他接口与容器组成一个连通器，这样导向管内的液面与容器内的液面处于相同高度。故导向管内的浮球会随着容器内液面的升降而升降。为了能很方便地看到液位，在导向管的外面装了一个翻柱显示器。因为在制造浮球时在浮球沉入液体与浮出部分的交界处安装了磁钢，它与浮球随液面升降时，它的磁性透过导向管传递给翻柱显示器，推动磁翻柱转 180°; 由于磁翻柱是有红、白两个半圆柱合成的圆柱体，所以转180°后朝向翻柱显示器外的会改变颜色，两色交界处即是液面的高度。如需远传信号，增加与磁翻柱同样长度的干簧管和变送器配套使用即可。

2．2 垂直安装位置的选择

磁翻板液位计安装位置的选择应根据该点的液位是否能真实反应酸槽实际液位。酸槽上磁翻板液位计垂直安装位置的选择如图 2 所示。图2中，B点靠近电机和泵，磁翻板液位计安装在此处既影响电机及泵的检修，又因泵附近液位的环流波动较大，对浮子导向管冲刷严重，故B点不合理; C点处因有管道通过，不便维护且影响管道和泵、电机等的起吊更换，故也不能选择C点; A点远离泵和电机，且有足够的空间安装翻板，便于维护，所以A点较为合适。

2．3 侧装式磁翻板液位计导向管的设计侧装式磁翻板液位计要能稳定长周期运行，其导向管的设计是至关重要的。其关键因素有: ①管径不宜太小，与浮子间间隙在 1 cm 左右; ②尽量不要有内衬; ③材质成分选用不低于316L 的不锈钢管; ④罐体引流管直径尽量小于浮子直径; ⑤导向管上下端部均采用法兰式密封，以便维护。

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