N95 mask exhalation valve air tightness tester - can be customized The air tightness tester of N95 mask exhalation valve is suitable for medical and daily protective masks. 【Related standards】 GB 19083-2009 "Technical Requirements for Medical Protective Masks" YY 0469-2011 "Medical Surgical Masks" GBT 32610-2016 "Technical Specifications for Daily Protective Masks" GB 2626-2006 "Respiratory protective equipment Self-priming filter type anti-particulate respirator" GB 2626-2019 "Respiratory Protection Self-priming filter anti-particulate respirator", etc. 【technical parameter】 1. Power supply: 220V, 50Hz; 2. Flowmeter, range: 0～100L/min, accuracy: 3%; 3. Micro pressure sensor, range: ±1000Pa, accuracy 1Pa; 4. Built-in air source device, ventilation volume >600L/min, exhaust pressure 19KPa, vacuum degree -18KPa; 5. The default ventilation volume is (85±1)L/min (can be set as needed); 6. The specifications of the test head mold can be replaced as needed; 7. Automatically test and judge the test results, the qualified standard: the expiratory resistance is less than 250Pa, and the inspiratory resistance is less than 350Pa. 8. Power supply: Ac220V±10% 50Hz 500W 9. Instrument size: 420×600×720 (L×W×H) 10. Weight: about 30Kg PS: (WLJCDM809-W) Qinsun Instruments Co., Ltd web: https://www.qinsun-lab.com