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AUJET-S automatic pump 
High Quality ,long life 
TUVB,ISO9001,ICE 
enjoy high reputation

Shortage of water resources and energy are important factors restricting the development of our economy, water saving and energy saving is the basic state policy of our country social economy sustainable development.The United States since the 1990 s, the frequency conversion water saving and energy saving technology applied in moving type, axis rotation type sprinkler and the pipe irrigation system, but the price is expensive.At that time, in our country urban and rural water supply and water pump pumping system, the motor is running at rated speed, rated water yield and water supply, reduce or in water when the water trough, the pipe network pressure is too high, the water tap and water pipes are damaged, it is a waste of electricity and water."Five-year" period, our country will ac variable frequency speed regulation technology as a new technology in industrial promotion project, but was not applied in irrigation water conservancy industry.To improve the condition of resource waste, produce the price is low, agriculture can accept water saving and energy saving of frequency conversion control, ministry of water resources in the northwest to the ministry of water resources water conservancy science institute "948" plan project "frequency conversion water saving and energy saving technology", the key technology of ac variable frequency speed regulation technology in the project. In December 1998, we introduced the 8210 and 8220 series frequency converter of German standards, specifications, performance parameters and part of the prototype test method.Ac frequency conversion technology can be roughly divided into straight - to - with two kinds of frequency conversion and intersection, we introduce for straight - alternating frequency conversion technology.Our technical route is introduces the key technology, and the digestion and absorption, and on this basis, the development of peripheral technology, development and production of frequency conversion water saving and energy saving products, and focus on the popularization and application.After the technology import, we import prototype of performance parameters for the comprehensive measurement and records, on the basis of the digestion, absorption, developed out of the four series of frequency control water saving and energy saving device, the frequency conversion water saving and energy saving products in addition to the frequency converter and PLC, all other have localization.CX - B series in this paper, the automatic variable frequency constant pressure water supply control device and CX - D series frequency conversion constant pressure water saving irrigation automatic control device