Product Usage:
SG688 melt blown cloth filtration efficiency performance tester is used to test the filtration efficiency of melt blown cloth, daily protective masks, medical masks, and respirators for particulate matter.

Features:
1. Equipped with a laser dust particle counting sensor to measure the number of aerosol particles in the upstream and downstream of the filter material at the same time, and accurately measure the filtration efficiency of the filter material.
2. Equipped with an aerosol generator to measure the filtration efficiency of particulate matter to meet users' testing requirements for filter materials.
3. Equipped with aerosol and neutralizing gas flow meters to control the number of salt particles in aerosols,
4. Equipped with a high-voltage anti-static air nozzle for neutralizing static electricity in aerosols.
5. The gas that neutralizes the aerosol concentration is heated to 35 degrees and then mixed and transported to the upstream of the filter material.
6. Equipped with a high-precision digital flow sensor for measuring the gas flow during testing.
7. High-precision differential pressure transmitter to test the airflow resistance on both sides of the sample.
8. Use a vacuum pump to generate the negative pressure required for testing, quiet and no vibration.
9. The upstream and downstream aerosols are discharged into the air after passing through the filter to prevent the air near the instrument from being polluted.
10. Equipped with 14-inch display, industrial computer operating software and control hardware.

11. Pneumatic clamps hold the samples, and have a mechanical anti-pinch design to prevent operating errors and ensure safety.
12. The computer comes standard with a micro printer to output test reports.

13. The electrical connection is safe and reliable to protect the safety of operators and instruments.

According to the standard:
GB 2626-2019 "Respiratory protective equipment self-priming filter anti-particulate respirator" (salt aerosol)
GB/T 32610-2016 "Appendix A to Technical Specifications for Daily Protective Masks" (salt aerosol)
GB 19083-2010 "Technical requirements for medical protective masks" (salt aerosol)
YY0469-2011 medical surgical mask

Test content:
Filter efficiency% and air flow resistance test (GB 19083-2010)
Equipment technical parameters:
1. Air flow adjustment and collection range: 20-100L/min, flow can be adjusted and collected within the range of 20-100L/min, accuracy 1%FS
2. Filter efficiency test range: (0.001-99.999)%, resolution 0.001%.
3. Test area: 100cm² (KN95 mask tooling fixture is optional)
4. Ventilation resistance: 0-1000pa, accuracy 1pa
5. Aerosol: saline equipment
6. Aerosol concentration: the concentration of NaCl aerosol generator does not exceed 200mg/m³, the median diameter of counting is (0.075±0.020)um, the geometric deviation of particle size distribution does not exceed 1.86, and the mass median diameter is about 0.3um.
7. Laser dust particle counting sensor test channel: 6 channels, which can measure the number of particles with diameters of 0.3μm, 0.5μm, 1.0μm, 2.5μm, 5.0μm and 10.0μm.
8. Power: about 800w
9. Product size: length * width * height (720mm *620mm *1420mm)
10. Weight: about 160 kg
Customers need to provide the following contents:
①Compressed air source
The compressed air pressure is 0.5～0.7MPa, the flow is greater than 0.3m³/min, and the compressed air is required to be dry and clean.
②Power supply
220VAC, 50Hz; stable power supply above 1.5kW (grounding wire is required).
③ Sufficient venue space: 3M (length) X3M (width) X1.8M (height).