|Air source||Air compressor|
|Test airflow||(8 +- 0.2) L / min|
|Sealing type||O-shaped ring seal|
|Manometer range||0- 500 Pa|
|Power||AC 220 V 50 Hz 1 Kw|
Breathability tester, is a lab testing instrument for determinationbreathability of medical face masks, the test principle is, throughmeasuring the differential pressure required to draw air through ameasured surface area at a constant air flow rate, to test the airexchange pressure of the medical face mask material, whichindicates the breathability of medical face masks.
Built-in water-filled differential manometer is used to measure thedifferential pressure, a mass flow meter is used for measurementof the airflow. An electric vacuum pump draws air through themedical mask breathability tester and a needle valve is used toadjust the airflow rate.