普通水塔储蓄一整天的用水，由此，即便在停电的情况下，重力作用仍能保持供水系统的静水压力。
And since a typical tower contains a full day's worth of water, the force of gravity can maintain the hydrostatic pressure of the water system even when the power goes out.
采用可编程控制器调节电机转速实现消防供水系统压力的自动控制。
By adjusting the rotational speed of motor, it can control the pressure of fire fighting watering system automatically with PLC.
沙河抽水蓄能电站技术供水系统存在压力和流量不足的问题。
The technical water supply system for the Shahe Pumped-storage Power Station has the problem of insufficient pressure and discharge.
介绍了恒压供水系统，采用PLC进行逻辑控制，采用变频器进行压力调节。
A constant pressure water supply system was introduced to which used PLC to process the logic control and employed VVVF to adjust water pressure.
在供水系统中，恒压供水是指在供水网系中用水量发生变化时，出口压力保持不变的供水方式。
In water supply system, water supply in constant pressure means that terminal pressure keeps constant all the time when the quantity of dispended water varies.
系统通过压力传感器、PLC、变频器等设备完成供水系统自动恒压控制。
Automatic constant pressure control of system has completed by press-sensor, PLC, frequency converter etc.
论述了某烧结厂浊环水泵供水系统 ，根据其工艺特点 ，采用压力传感器及智能调节器组成压力闭环系统 ，控制变频调速器 ，从而调节电机———水泵之转速 ，维持供水压力为恒定 。
This paper introduces the application of general inverter in the coal dust supply closed loop control system of power station, which consists of relevant transducer and intelligent controller.
本文介绍一种最新的供水系统设计，以变频调速技术、可编程控制器技术及PID调节器技术为基础，构成以压力为控制对象的闭环控制系统。
This paper gave a new design for water feeding system, the system was based on VVVF motor driver. PLC and PID closed loop control.
本文介绍一种最新的供水系统设计，以变频调速技术、可编程控制器技术及PID调节器技术为基础，构成以压力为控制对象的闭环控制系统。
This paper gave a new design for water feeding system, the system was based on VVVF motor driver. PLC and PID closed loop control.
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