First, the product description Automatic water supply equipment is the use of constant pressure pump dedicated digital frequency converter has developed high-performance intelligent PID control constant pressure water supply automatic control equipment. In particular, the device is used in high-performance microprocessor-controlled inverter, fully functional, easy to operate without additional redundant control unit, thus greatly improving the system reliability and interference. Second, the scope 1, urban and rural production and living high-rise building automatic constant pressure water supply, agricultural water-saving irrigation 2, fire water and drainage works automatically 3, constant automatic water boilers, heating circulation pump regulator 4, with water, low water tank, pool, depth of wells and other water sources supporting the use of any 5, oil field: The device applies constant pressure or constant field and constant interface level oil pumping system 6, the device for other heating, chemical ingredients, production process Third, the main features of 1, no tower no tanks, water towers to replace the traditional, high roof water tanks, pressure tanks and other water supply 2, energy saving, water saving, energy saving 25% -50% 3, an area of small, low investment 4, manual and automatic control, simple operation and flexibility to adjust system configuration to ensure the normal supply system, even when the maintenance 5, high reliability, a variety of automatic protection function, strong anti-interference 6, the system calls can be automatically activated after the power outage, and automatically run into, can achieve unattended 7, the pump soft start, speed run, to eliminate water hammer impact and start to extend the life of the pipe network and equipment 8, the elimination of secondary pollution of water 9, automatic conversion constant pressure and constant pressure are two ways of working Fourth, the technical parameters 1, the water head: 0 ~ 300m, flow range: 0 ~ 2000m3 / h 2, the control motor power: 0.75 ~ 280kw, 300kw or more devices over a single design of control programs 3, pressure range: 0 ~ 2.5Mpa, control error: ± 0.01Mpa 4, the ambient temperature: -5 ℃ ~ +40 ℃ 5, Environment Humidity: <60 ℃