Hotspot Engine Program Henan Aimingsi Environmental Protection Technology.
What is the initial resistance of the intermediate filter? First of all, we need to understand what is the resistance of the air filter? The use of air filter to penetrate the airflow of its filter material structure to form resistance, the air filter dust resistance increases, when the resistance increases to a certain specified value, the filter is scrapped, sometimes too much resistance will make the dust that has been captured on the filter scatter, the appearance of this dangerous filter should be scrapped and replaced with a new filter in time, the specific details of Changrui purification filter manufacturers for you one by one: the resistance of the new filter (under the lowest wind speed) is called "initial resistance", and the resistance of the corresponding filter is called "final resistance", In most cases, the final resistance is 2-4 times the initial resistance, and the rated air volume and its resistance value under the wind are generally its average value.
Elementary resistance (PA) of junior high school efficacy filter (PA):
G3 (initial effect) 30 40;
G4 (primary) 40 50;
F5 F6 (Intermediate) 70 90;
f7 f8 high efficiency) 90 110;
f9 h11 (sub-efficiency) 110 150;
H13 High Efficiency & Super High Efficiency 180 300;
The above values should not be too large, and the average value can be selected).
Primary, intermediate, and high-efficiency air filters recommend final resistance (PA):
G3 (primary) 100 200;
G4 (primary) 150 250;
F5 F6 (intermediate) 250 300;
f7 f8 [high and high efficiency) 300 400;
F9 H11 (sub-high efficiency) 400 450;
H13 High Efficiency & Super High Efficiency 400 600;
The above values should not be too large, and the average value can be selected).
In order to ensure the safe operation of the air filter, it is necessary to add a resistance monitoring device to each filter section, and the final resistance should be determined by the instrument, the best way is to add a pressure differential gauge, and the final resistance alarm device should also be added.