BFE detector Particle filtration efficiency tester Phone

Description :

　　The mask particle filtration efficiency tester is used to test the particle filtration efficiency of daily protective masks and medical masks, as well as to determine the obstruction performance of ordinary fabrics and medical protective masks with respect to constant airflow. Applicable to medical device inspection centers, safety protection inspection centers, labor protection inspection centers, drug inspection centers, prevention and control centers, textile testing centers, mask consumption enterprises, etc.

　　As is well known, particulate matter refers to particles with an aerodynamic equivalent diameter of less than or equal to 2.5 μ m in the ambient air, also known as fine particulate matter, commonly referred to as PM2.5. And filtration efficiency refers to the ability of a mask body to filter out particulate matter under specified conditions, indicated as a percentage.

　　The detection conditions for the mask particle filtration efficiency tester are: the testing environment temperature is (25 ± 5) C, and the relative humidity is (30 ± 10)%. Testing process:

　　1. Test flow rate (85 ± 4) L/min (if multiple filter elements are used, the flow rate should be evenly divided. If dual filter elements are used, the detection flow rate of each filter element should be (42.5 ± 2) L/mi. If multiple filter elements may be used separately, they should be tested according to the detection conditions of a single filter element). 2. Adjust the filtering efficiency detection system to the detection state and adjust its relevant parameters;

　　2. Use appropriate fixtures to airtightly connect the mouth military body or filter element to the detection device;

　　3. After the testing begins, record the filtration efficiency of the sample with a sampling frequency of 1 time/min. The testing should continue until the particulate matter on the mask is loaded to 30mg; Data processing: Use the small value of the filtration efficiency obtained during the entire testing process as the filtration efficiency of the batch of mask sample materials.

　　Product features of mask particle filtration efficiency detector:

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

　　2. The negative pressure cabinet is equipped with a peristaltic pump;

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

　　4. The flow rate of bacteria night spray of microbial aerosol generator 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. Built in leakage protection switch to protect the safety of operators;

　　10. Insulation and flame retardancy between the inner and outer layers;

　　11. Front switch glass door, convenient for experimental personnel to observe and operate;

　　12. Detachable bracket with adjustable height;

　　13. Dual purpose casters for support and mobility.

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