Jinan, Shandong, China
The mask leakage test is used to test the filtration efficiency and protective effect of KN95 mask, protective clothing, daily protective mask, self-priming filtering anti particle mask and other breathing masks and protective masks.
Reference of test standard
GB 2626 ,EN149:2001+A1:2009 ,GB/T 29511 ,
1,Efficiency testing:It adopts imported TSI brand high precision photometer,
The concentration in the warehouse and in the mask was detected respectively,
Ensure the accuracy, stability, fast and effective sampling.
2,Detection chamber: the detection chamber shall be of sufficient size and observation range, and be able to meet the standard requirements for specified actions (personnel upright, pedal movement, rotation in place, etc.)
3. Aerosol generation: it can test salt and oil on the same instrument, and switch automatically without manual operation, so as to ensure the rapid and stable adjustment of mist concentration.
1. Horizontal pedal driving shaking table: running speed (6 ± 0.5) km / h
2. Sampling hole: four in total, ball valve control, with hose
3. Sampling pump: regulation range: 0.05l/min ~ 4L / min, flow fluctuation ± 0.20l/min
4. Lighting: equipped with 2 LED fluorescent tubes
5. Aerosol generator
Oil(medium: DEHS, corn oil, paraffin oil)
Aerosol concentration: 20~30mg/m³(adjustable)
Particle size distribution: (0.02~2) μ m, median particle size: 0.3 μm
Salt (medium: NaCl)
Aerosol concentration: 4~12mg/m³ (adjustable)
Particle size distribution: (0.02~2) μm, median particle size: 0.6 μm
6. The measuring range of photometer is (0~200) mg / M 3
7. Test temperature: (25 ± 5) ºC
8. Relative humidity: (30 ± 10)%
7. Dimension: 1800 × 1800 × 2000mm
Control box: 670 × 590 × 1000mm
8. Weight: 200kg
9. Gas source requirement: 0.5MPa
10. Power supply: AC220 V, 50 Hz, 300 W
|10. Power supply: AC220 V, 50 Hz, 300 W|
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