1. Overview of the instrument:
ZY-8803-PC filter efficiency test bench was developed according to the standard GB 2626-2019 "Respiratory protective equipment Self-priming filter anti-particulate respirator" 6.3 filter efficiency test method and other standards. The test bench uses NaCl solution to spray through the Ruskin nozzle and then forms an aerosol by drying, which is mainly used for the filtration efficiency of salt aerosol. The system uses sophisticated instruments to control the flow rate and aerosol concentration, and communicates with the computer through system integration. It is easy to operate and has good stability.
Second, according to the standard:
GB 2626-2019 "Respiratory protective equipment Self-priming filter anti-particulate respirator" (salt aerosol)
GB / T 32610-2016 "Daily protective mask technical specifications" (salt aerosol)
GB 19083-2010 "Technical Requirements for Medical Protective Masks" (Salt Aerosol)
Three, equipment parameters:
1. Applicable standard YY0469-2011, EN1822-3: 2009
2. Applicable filter material: glass fiber filter material, PP filter material, membrane filter material.
3. Detection particle level: 0.3, 0.5, 1.0, 2.0, 5.0, 10.0 μm
4. Two sets of aerosol generators: salt particulate aerosol generator and oily particulate aerosol generator.
5. Aerosol generator
a) NaCl generated gas volume: greater than 50 ~ 200 mg / m
b) NaCl particle concentration 20 ± 2mg / m³
c) The amount of gas generated by oily particles: greater than 100L / min
d) Oily particulate matter concentration: 20 ～ 30mg / m³
6. The cold generation aerosol generator is used to produce continuous and stable aerosol particles, which is convenient for filling solution.
7. Adopt high-precision PM2.5 sensor to measure aerosol concentration.
8. The whole particle anti-leakage design protects the safety of laboratory personnel.
9. Equipped with aerosol particulate static neutralization device.
10. Pneumatic clamp is equipped with protection device, safe and convenient to use.
11. Configure the temperature and humidity sensor to instantly display the ambient temperature and humidity (temperature and humidity requirements: 25 ℃ ± 5 ℃, 30% RH ± 10% RH).
12. Configure glass rotor flowmeter, vacuum pump, laser dust particle counter.
13. Filtration efficiency detection range: 0-99.999%.
14. Filtration efficiency test flowmeter range (10-100) L / min, accuracy 2.5.
15. Sampling frequency of filtration efficiency: 1-9999 times / min can be set arbitrarily.
16. Filtration efficiency particle concentration: (20-30) mg / m3; counting median diameter: salt particle (0.075 ± 0.02) μm,
Oil particles (0.185 ± 0.02) μm; geometric standard deviation of particle size distribution: salt particles ≤1.86, oil particles ≤1.60;
Dynamic detection range (0.001-100) mg / m3, accuracy 1%.
17. Instrument accuracy level (accuracy level): level 1
18. Control system: The computer controls the test process, automatically collects data, and configures a dedicated computer and test software.
19. The computer automatically tests the gas concentration and automatically calculates the filtration efficiency; it can save, output, query and print the test data.
20. Power supply: AC220V 50 air pressure source 6kg / cm2
21. Volume: about 1200 * 710 * 1350mm, weight: about 100kg 历史记录