We use PC detect the pressure of pipeline, and the non-negative pressure feedback to adjust the frequency of the transducer. Firstly, plan the working pressure on the water point according to the real condition next measure the real pressure of the outlet and compare with planned pressure. If the actual pressure is higher than planned pressure, the frequency of the transducer should be lowered, the other way round, add the frequency of the transducer. PC timely detecting the pressure, quick measuring and instantaneous adjusting keep the pipeline pressure in consistent with planned pressure.

Moreover as above sketch showing, closed structure and negative pressure feedback restraining system allow this product directly connect with tape water pipe in series. Applying the adding principle of pump, this product can make the best use of the existing pressure in tape water, so realize less power consuming by frequency conversation water supply system. When pressure is dropping because of shortage of water pressure, this product collects information of water level signal and vacuum by the detecting equipment installed in vacuum transducer and stable flow compensation, Then control the special action of the stable flow compensation and vacuum transducer by PC.
2 Compared with traditional twice compression supply equipment, GHG type energy-saving and pressure-boosting automatic water supply equipment has the following advantages :
As a result the negative pressure is prevented, so it will not affect the pipeline.
(1 ). Low investment, no pool, needless to disinfect.
(2 ). Compactness, small occupation, convenient to install.
(3 ). High efficiency and energy saving, low power expenditure and operating cost.
(4 ). Entire stainless flow passage, sanitation and free from secondary pollution.
(5 ). Stable water pressure, safe against pressure fluctuation to neighboring municipal
pipe network.
3. advantages :
(1 ) Full automatic operation, design of unattended operation.
(2 ) Super-strength protection, automatic display of malfunction and alarm.
(3 ) Mimic board man-machine interaction, inquiry, setting and parameter adjusting at any moment.
(4 ) Bypass design, automatic switchover, power cut without water off.
(5 ) Deep purification improves quality of life. GHGF type
(6 ) Long-distance supervision can be connected with web.