BFE Mask * * Filtration Efficiency Tester

The mask filtration efficiency tester adopts a dual gas path simultaneous comparative sampling method, which improves the accuracy of sampling and is suitable for performance testing of mask filtration efficiency by metrological verification departments, research institutes, mask production enterprises, and other related departments.

Main purpose:

The mask filtration efficiency tester adopts a dual gas path simultaneous comparative sampling method, which improves the accuracy of sampling and is suitable for performance testing of mask filtration efficiency by metrological verification departments, research institutes, mask production enterprises, and other related departments.

Applicable standards:

Appendix B * * Filtration Efficiency (BFE) Test Method B.1.1.1 of YY0469-2011 Technical Requirements for Medical Surgical Masks

Q/0212 ZRB003-2011 Medical Surgical Mask * * Filtration Efficiency

ASTMF2100、ASTMF2101、 European EN14683

Mask * * Filtration Efficiency Tester Main Parameters:

1. Sampling flow rate of channel A: parameter range, 28.3L/min; Resolution, 0.1L/min; Maximum allowable error: better than ± 2.5%;

B sampling flow rate: parameter range, 28.3L/min; Resolution, 0.1L/min; Maximum allowable error: better than ± 2.5%;

2. Spray flow: parameter range, (8～10)L/min； Resolution, 0.1L/min; Maximum allowable error: better than ± 5.0%;

3. Peristaltic pump flow rate: parameter range, (0.006～3.0)mL/min； Resolution, 0.001ml/min; Maximum allowable error: better than ± 2.5%;

4. A-way flowmeter front pressure: parameter range, (-20～0)kPa； Resolution, 0.01kPa; Maximum allowable error: better than ± 2.5%;

Front pressure of B-way flowmeter: parameter range, (-20～0)kPa； Resolution, 0.01kPa; Maximum allowable error: better than ± 2.5%;

5. Front pressure of spray flowmeter: parameter range, (0～300)kPa； Resolution, 0.1kPa; Maximum allowable error: better than ± 2.5%;

6. Negative pressure of aerosol chamber: parameter range, (-90～-120)Pa； Resolution, 0.1Pa; Maximum allowable error: better than ± 2.0%;

7. Data storage capacity:>100000 sets;

8. Characteristics of high-efficiency air filter: The filtration efficiency for particles above 0.3um is ≥ 99.99%;

9. Mass median diameter of aerosol generator: average particle diameter (3.0 ± 0.3) μ m, geometric standard deviation ≤ 1.5.

Technical features:

1. Negative pressure experimental system to ensure the safety of operators;

2. The negative pressure cabinet is equipped with a peristaltic pump, A and B channels of six stages Anderson;

3. The flow rate of the peristaltic pump can be set;

4. The flow rate of the special microbial aerosol generator at night can be set, and the atomization effect is good;

5. Embedded high-speed industrial microcomputer control;

6.10.4 inch industrial grade high brightness color touch display screen;

7. USB interface, supporting USB data transfer and storage;

8. The cabinet is equipped with high brightness lighting fixtures;

9. The inner layer of the cabinet is made of stainless steel and processed as a whole, while the outer layer is coated with cold-rolled plastic sheet. The insulation and flame retardant properties are maintained between the inner and outer layers;

10. Detachable bracket, adjustable bracket height, supporting and moving dual-purpose casters.