LFY-709A Medical Mask Air Permeability (Pressure Difference) Tester

Main purpose/Use 
This instrument is suitable for measuring the air permeability (pressure difference) of medical masks, and can also be used to measure the air permeability (pressure difference) of other textile materials.
Instrument features:
1. It uses an air compressor as the air source to supply air to the instrument, without being restricted by the space of the test site;
2. It is equipped with a high-precision pressure difference sensor, which displays the pressure difference between the two sides of the sample digitally;
3. The pneumatic sample clamping device can conveniently and quickly firmly clamp the sample without the need for cutting the sample. 
Technical indicators 
1. Air source: Air compressor; 
2. Air flow rate: 8 liters per minute; 
3. Sealing method: Mechanical seal; 
4. Sample ventilation diameter: Ф(25 ± 1) mm; 
5. Differential pressure sensor range: 0 - 500 Pa; 
6. Display mode: Displays the pressure difference in numerical form; 
7. Power Supply: 220V, 50Hz. 
Applicable Standards 
EN14683:2019  Medical face masks -Requirements and test methods