本报告涉及基于液压装置的系统，仅使用灌溉系统中的水所能获得的能量；它给出了这些系统的主要定义和分类。适用于通过水量测量实现用水控制的控制系统。半自动控制系统用于一个灌溉周期，每个后续周期需要进一步手动操作，以预设所需水量。一些数字说明了描述的含义。

This report deals with systems based on hydraulic devices using only the energy that can be obtained from the water in the irrigation system; it gives main definitions and a classification of these systems. Applies to control systems, in which the control of water application is achieved by means of water quantity measurement. Semi-automatic control systems are used for one irrigation cycle, each subsequent cycle requires a further manual operation to preset the required water quantities. Some figures illustrate the meaning of the description.