The filtration efficiency testing equipment is mainly used for the filtration efficiency testing and air flow resistance testing of masks and melt blown cloth,equipment reference standard YY0469-2011 GB2626-2019 EN1822-3:2012 GB19083-2003,GB2626-2019 (reference KN95), GB / T32610, EAST-RP-CC021.1 and other standards.
The device is composed of NaCl cargo oil medium generator, air flow meter, humidifier, seal box and corresponding pipeline.
Air source system:
Exhaust volume: 10 ± 100 L /m
Particle size of solid aerosol: 0.075 ± 0.02um
Concentration: ≤ 200mg/m3
Test flow range: 15-100L/min
Test sample specification: 100 cm2 /12cm2 (PTFE / fiberglass strip), equipped with multi specification clamps (plane mask, 3D mask)
Resistance test: measuring range 0-1000pa, accuracy up to 0.01pa, automatic return to "0" function
Efficiency test: efficiency range 40% - 99.999%;
Fog dust source: NaCl, PSL, dehs, DOP
Basic principle: the aerosol generator is used to generate a certain concentration of gas, and then a photometer is used to measure the gas concentration for particle size detection before and after breathing
NaCl concentration: 200mg / m3
Flow accuracy: 10-100 L/min, accuracy 2%
Test medium: NaCl
Pressure: 500Pa
Structural composition:Particle generator, flow detection device, concentration detection device
