Melt blown cloth particle filtration efficiency tester

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 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.) and medical labor protection equipment.

2. Principle and Applicable Scope Parameters

This test bench adopts a 7-inch capacitive touch screen with a fully Chinese operating interface. Users only need to provide 2.2Mpa compressed gas, plug in the power supply, and achieve fully automated operation.

Particle filtration efficiency measurement: Equipped with a DEHS or NaCl aerosol generator to generate stable aerosol particle concentration, the tested sample is placed in an automated fixture and the quantity and concentration of unfiltered and filtered particles are captured by a laser particle counter. The efficiency ratio of the tested sample before and after filtration is calculated. After completion, the sample number can be entered and the results can be printed directly, or sent to an Android phone via Bluetooth.

Resistance test: This test bench is also equipped with a pressure difference sensor, which can measure the resistance value while testing the particle filtration efficiency.

3. Basic functions

• Filtration efficiency measurement (laser particle counting method).

• Resistance measurement.

• Measurement flow rate switching (32L/min and 85L/min).

• Determination of air permeability.

• Automatic storage.

• Automatic printing.

An 8-hour efficiency test.

• Bluetooth sharing results.

WIFI networking upgrade.

4. System features

Adopting scientific design methods such as heaters and flow bypasses, the system is more accurate and stable.

Single sensor design combined with a stable aerosol generator to maintain data consistency and accuracy.

• Meet the national standard testing requirements.

Equipped with 2 flow meters for observing and testing flow rates, this method is stable and reliable, and can also be adjusted to measure any desired flow rate.

Modular design, easy to replace and maintain.

Provide three indicators including PM1.0, PM2.5, and PM10 for comparison with the atmospheric environment of the monitoring station to verify the accuracy of the sensors.

• Bluetooth can be used to share test results, making it easier to store than thermal paper.

The system software can be upgraded for free via WIFI and new features can be enjoyed.