Briefly introduce the knowledge content of air filter resistance
Air filter refers to air filter device, generally used in clean workshops, clean workshops, laboratories and clean rooms, or for dust prevention of electromechanical communication equipment. There are primary filter, medium efficiency filter, high efficiency filter and sub-efficient model. Various models have different standards and performance.
The dirtier the filter, the faster the resistance grows. Too high a final resistance value does not mean that the life of the filter will be significantly longer, but it will cause a sharp drop in the air conditioning system. Therefore, it is not necessary to set the final resistance value too high.
Resistance monitoring A resistance monitoring device should be installed for each filter section. The final resistance depends on the meter to determine, not just the operator's feelings.
The cheapest resistance monitoring device is the U-tube differential pressure gauge. The inclined tube differential pressure gauge and the curved tube differential pressure gauge are relatively beautiful. The differential pressure gauge grade and price are higher. In addition, there is a differential pressure transmitter that turns resistance into an electrical signal.
In addition to the resistance monitoring device that can be read, a final resistance alarm should be added. The way to save trouble is to draw a red bar on the differential pressure gauge; the insurance method is to use a differential pressure switch.
Final resistance recommended value filtration efficiency specification recommended final resistance, Pa
G3 (coarse effect) 100 to 200
G4 150～250
F5~F6 (medium effect) 250～300
F7~F8 (high school effect) 300~400
F9~H11 (sub-efficient) 400～450
Efficient and ultra efficient 400~600
Low efficiency filters often use coarse fiber filters with a diameter of ≥ 10 um. Due to the large inter-fiber gap, excessive resistance may blow up the ash on the filter. At this time, the resistance is no longer increased, but the filtration efficiency is reduced to zero. Therefore, it is necessary to strictly limit the final resistance value of the filter below G4.
SW-CJ-2D double single-sided (vertical air supply) purification workbench
This is the most innovative purification workbench widely used in medical work, pharmaceutical, chemical testing and other fields, and provides a sterile, dust-free and clean environment.
Characteristics
Vertical manifold
2. Quasi-closed glass damper can effectively prevent the penetration of external airflow and the stimulation of human body by operating odor.
3. Adopt adjustable air volume fan system, electric remote control switch control. Ensure that the wind speed in the work area is always ideal.
4.LED LCD control panel operation control
5. Working area is made of 304 stainless steel
Technical Parameters
model
SW-CJ-2D
Cleanliness
Level 100 @≥0.5μm (US Federal 209E)
Number of colonies
<0.5 pcs/dish. (diameter 90mm culture plate)
noise
≤62dB(A)
average wind speed
0.25-0.45m/s
Vibration half-peak
≤0.5um (x, y, z direction)
Illuminance
≥300LX
power supply
AC, single phase 220V/50HZ (200W)
Maximum power consumption
750W
weight
150KG
Working size
1150*500*520mm
Dimensions
1300*580*1600mm
High efficiency filter specifications and quantities
1135*460*38*1
Fluorescent / UV lamp specifications and quantities
8W*2/10W*2
Briefly introduce the knowledge content of air filter resistance
Air filter refers to air filter device, generally used in clean workshops, clean workshops, laboratories and clean rooms, or for dust prevention of electromechanical communication equipment. There are primary filter, medium efficiency filter, high efficiency filter and sub-efficient model. Various models have different standards and performance.
The dirtier the filter, the faster the resistance grows. Too high a final resistance value does not mean that the life of the filter will be significantly longer, but it will cause a sharp drop in the air conditioning system. Therefore, it is not necessary to set the final resistance value too high.
Resistance monitoring A resistance monitoring device should be installed for each filter section. The final resistance depends on the meter to determine, not just the operator's feelings.
The cheapest resistance monitoring device is the U-tube differential pressure gauge. The inclined tube differential pressure gauge and the curved tube differential pressure gauge are relatively beautiful. The differential pressure gauge grade and price are higher. In addition, there is a differential pressure transmitter that turns resistance into an electrical signal.
In addition to the resistance monitoring device that can be read, a final resistance alarm should be added. The way to save trouble is to draw a red bar on the differential pressure gauge; the insurance method is to use a differential pressure switch.
Final resistance recommended value filtration efficiency specification recommended final resistance, Pa
G3 (coarse effect) 100 to 200
G4 150～250
F5~F6 (medium effect) 250～300
F7~F8 (high school effect) 300~400
F9~H11 (sub-efficient) 400～450
Efficient and ultra efficient 400~600
Low efficiency filters often use coarse fiber filters with a diameter of ≥ 10 um. Due to the large inter-fiber gap, excessive resistance may blow up the ash on the filter. At this time, the resistance is no longer increased, but the filtration efficiency is reduced to zero. Therefore, it is necessary to strictly limit the final resistance value of the filter below G4.
SW-CJ-2D double single-sided (vertical air supply) purification workbench
This is the most innovative purification workbench widely used in medical work, pharmaceutical, chemical testing and other fields, and provides a sterile, dust-free and clean environment.
Characteristics
Vertical manifold
2. Quasi-closed glass damper can effectively prevent the penetration of external airflow and the stimulation of human body by operating odor.
3. Adopt adjustable air volume fan system, electric remote control switch control. Ensure that the wind speed in the work area is always ideal.
4.LED LCD control panel operation control
5. Working area is made of 304 stainless steel
Technical Parameters
model
SW-CJ-2D
Cleanliness
Level 100 @≥0.5μm (US Federal 209E)
Number of colonies
<0.5 pcs/dish. (diameter 90mm culture plate)
noise
≤62dB(A)
average wind speed
0.25-0.45m/s
Vibration half-peak
≤0.5um (x, y, z direction)
Illuminance
≥300LX
power supply
AC, single phase 220V/50HZ (200W)
Maximum power consumption
750W
weight
150KG
Working size
1150*500*520mm
Dimensions
1300*580*1600mm
High efficiency filter specifications and quantities
1135*460*38*1
Fluorescent / UV lamp specifications and quantities
8W*2/10W*2
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