本文首次推出用步进电机驱动的钢绳浮子式液位测量仪。它由罐顶测量仪、脉冲电源、STD工业计算机及多路转换器组成。特点是罐顶测量仪的机械结构和电路都很简单,测量精度高,几乎不受环境温度变化的影响,价格较低,操作方便。容易维护,可用于罐群液位远距离的巡回测量,也可与集中管理系统的上位计算机联网,直接调用数据。 This article first introduced the use of stepping motor driven steel rope float level gauge. It consists of a tank top gauge, a pulse power supply, an STD industrial computer and a multiplexer. The characteristic is that the mechanical structure and circuit of the tank top measuring instrument are very simple, the measuring precision is high, the temperature is hardly affected by the change of the ambient temperature, the price is lower and the operation is convenient. Easy to maintain, can be used for distance measurement of tank level liquid level, and also can be connected with host computer of centralized management system to directly call data.