A.Scope of application

The main performance indicators of this set of instruments not only meet the requirements of the B.1.1.1 test instrument of Appendix B Bacterial Filtration Efficiency (BFE) Test Method in "Technical Requirements for Medical Surgical Masks" YY0469-2004, but also meet the ASTMF2100, ASTMF2101 、 European EN14683 standard requirements, and on this basis, innovative improvements have been made. The dual gas path simultaneous sampling method is used to improve the accuracy of sampling. It is suitable for metrological inspection departments, scientific research institutes, medical mask manufacturers and Performance testing of bacterial filtration efficiency of medical surgical masks by other related departments.

B.Meet the standards

YY0469-2011 "Medical Surgical Mask"

C. Technical characteristics

1. Negative pressure experiment system to ensure the safety of operators.

2. Built-in peristaltic pump in negative pressure cabinet, A, B two-way six-stage Andersen.

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

4. Special bacterial liquid sprayer, the spray flow size 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.

7, USB interface, support U disk data transfer.

8. Software parameter calibration.

9. User password protection.

10, fault detection self- / 2 protection.

11. The cabinet has built-in high-brightness lighting.

12, built-in leakage protection switch to protect the safety of operators.

13. The inner stainless steel of the cabinet is integrally processed and formed, and the outer layer is spray-coated with cold-rolled sheet. The inner and outer layers are insulated and flame retardant.

14. The front switch glass door is convenient for experimenters to observe and operate.

15. Detachable stand, height of stand is adjustable.

16. Support and move dual-purpose casters.

D.Technical requirements

The main parameters

Parameter range

Resolution

Accuracy

A road sampling sampling flow

28.3L / min

0.1L / min

Better than ± 2.5%

B road sampling flow

28.3L / min

0.1L / min

Better than ± 2.5%

Spray flow

(8 ~ 10) L / min

0.1L / min

      Better than ± 5%

Peristaltic pump flow

(0.006 ~ 3.0) L / min

0.001L / min

Better than ± 2.5%

Channel A front pressure

(-20 ~ 0) KPA

0.01KPA

Better than ± 2.5%

B-channel flowmeter front pressure

(-20 ~ 0) KPA

0.01KPA

Better than ± 2.5%

Pressure before spray flowmeter

(0 ~ 300) KPA

0.1KPA

Better than ± 2.5%

Aerosol chamber negative pressure

(-90 ~ -120) KPA

0.1KPA

      Better than ± 2.0%

Ambient temperature

(0 ~ 50) ℃

Cabinet negative pressure

(-50 ~ -200) PA

Data storage capacity

＞ 100000 sets

HEPA filter characteristics

Filtration efficiency for particles above 0.3um ≥99.99%

Aerosol generator mass median diameter

Average particle diameter (3.0 ± 0.3) um, geometric standard deviation ≤1.5

Two-way 6-level Anderson

1 level um, 1I level 4.7-7um. III level 3.3-4.7 u m,

Sampler capture particle size

Class IV 2.1-3.3um, Class V 1.1-2.1 μm, Class IV 0.6-1.1um.

Aerosol chamber specifications

600 (length) X85 (diameter) x3 (thickness) mm

Total number of positive QC sampler particles

(2200 ± 500) cfu

Negative pressure cabinet ventilation flow

≥5m³ / min

Negative pressure cabinet door size W * D

(Length 1000 x width 730) mm

Host size W * D * H

(Length 1180X width 650 x height 1300) mm

Bracket size W * D * H

(Length 1180x width 650x height 600), height adjustable within 10 a

Instrument noise

＜ 65db (A)

Total Weight

150kg

Working power

AC 220V ± 10%, 50HZ

Power consumption

<1500W