LFY-709 Medical mask ventilation resistance tester
The main purpose
It is suitable for measuring the ventilation resistance of medical surgical masks and disposable medical masks, as well as measuring the ventilation resistance (gas exchange pressure difference) of other materials.
Instrument characteristics
1. The suction air source is used as the power source of the instrument, which is not restricted by the space of the test site;
2. Equipped with a high-precision differential pressure sensor, which digitally displays the differential pressure on both sides of the sample;
3. The special sample holder ensures that the sample is firmly clamped.
Technical index
1. Air source: suction type;
2. Air flow: 8L/min，Flow meter range：0-10 L/min ±0.5 L/min;
3. Sealing method: end face sealing;
4. The breathable diameter of the sample: Ф25mm;
5. Range of differential pressure sensor: 0～500Pa，accuracy：±1%;
6. Display mode: digital display pressure difference;
7. Power supply: 220V, 50Hz.
Applicable standards
YY 0469-2023 Surgical mask
YY/T 0969-2023 Single-use medical face mask
FZ/T 64114-2024 Technical specification of meltblown nonwovens for masks