DONGGUAN XINGDONG ELECTRONICS CO., LTD.
Add: NO.2, Dagao Hengfeng 2nd Road, Changping Town, Dongguan, Guangdong, China
Tel：+86-769-83660708
Fax：+86-769-83660718
Email：info@d-fan.com.cn
URL：http://www.szdosense.com/eng/
Because "Micro Cooling Fan" parameter is usually calibrated in free air transmission, that in the absence of pressure circumstances. In the practical application of the system, "Micro Cooling Fan" is often given to bear the system back pressure resistance. And this pressure is related to many factors, it is difficult to determine its size. For this reason, in order to compensate for this influence of the pressure difference, generally to selected "Micro Cooling Fan" parameter derating 60% to 80% use.