Melt blown cloth particle filtration efficiency tester

1、 Main purpose

1Melt blown cloth particle filtration efficiency testerUsed for testing the filtration efficiency of particulate matter in daily protective applications.

2. The test bench refers to advanced design concepts of similar equipment (such as TSI's 8130 model in the United States), but is also suitable for the testing status of related industries in China. The independently developed program software runs stably and reliably, and is easy to operate. A concise operating interface with clear and easy to understand operating parameters. Different dust sources (DEHS and NaCl) can be easily switched, suitable for testing various air filter materials (meltblown, fiberglass, PP, film, etc.), medical and some labor protection products.2、 Applicable standards(Different accessories are required for different standards)

GB/T 32610-2016 Technical Specification for Daily Protection 6.13 (Appendix A)

GB 2626-2006 Respiratory protective equipment - Self priming filter particle respirator

GB 19082-2009 Technical Requirements for Disposable Medical Protection

GB 19083-2010 Technical Requirements for Medical Protection

GB 24539-2009 General Technical Requirements for Chemical Protection of Protective Equipment 6.9

YY 0469-2011 Medical Surgery

3、 Basic configuration

1. DEHS aerosol generator

2. NaCl aerosol generator

3. PM2.5 gas sensor

4. Differential pressure transmitter

5. Flow Transmitter

6. Spray concentration adjustment

7. high-pressure blower

8. Spray air pump

9. Static neutralization device

10. Electric heating device

11. Standard fixture (100 cm2)

12. One set of vacuum pump

13. A set of measurement and control computers

14. One set of experimental software

15. A set of HP color inkjet printers

4、 Technical parameters

1Melt blown cloth particle filtration efficiency testerThe use of a cold gas aerosol generator produces continuous and stable aerosol particles, making it convenient to add the solution.

2. Using high-precision PM2.5 gas sensors to measure aerosol concentration.

3. Full process particle leakage prevention design to protect the safety of experimental personnel.

4. Two sets of aerosol generators: salt particle aerosol generator and oil particle aerosol generator.

5. Equipped with an aerosol particle electrostatic charge neutralization device.

6. Pneumatic fixture with protective device, safe and convenient to use.

7. Configure temperature sensor.

8. Configure glass rotor flowmeter and vacuum pump.

9. Filter efficiency detection range: 0-99.999%.

10. Filter efficiency detection flowmeter range (10-100) L/min, accuracy level 2.5.

11. Filtration efficiency: particulate matter concentration: (20-30) mg/m3; Median diameter of counting: salt particles (0.075 ± 0.02) μ m, oil particles (0.185 ± 0.02) μ m; 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%.

12. Instrument accuracy level (precision level): Level 1

13. Control system: computer-controlled testing process, automatic data collection, configuration of computer and testing software.

14. Computer automatically tests gas concentration and calculates filtration efficiency; Can save, output, query, and print test data.

15. Power supply: AC220V 50Hz.