LFY-709A Air permeability (pressure difference) tester for medical masks
Source：本站 Time：2020/9/23 14:03:57 frequency：
The main purpose
It is used for the air tightness test of the exhalation valve of self-priming filtering anti-particulate respirator. Meet the test standard GB2626-2019 Respiratory protection equipment self-priming filter anti-particulate respirator standard. Applicable to labor safety inspection centers, occupational safety inspection centers, disease prevention and control centers, respirator manufacturers, etc.
Technical index
1. Air source: vacuum pump;
2. Pipeline buffer volume: at least 5L;
3. Gas flow meter: range (0～100) mL/min, resolution 0.1mL/min;
4. Micro-pressure measurement range: -1000Pa～0Pa, resolution 1Pa;
5. Timer: 0～99.99S/M/H, set arbitrarily;
6. The pumping rate of the vacuum pump is about 2L/min.
7. Power supply: 220V, 50Hz.
Applicable standards
GB 2626-2019 Respiratory protection--Non-powered air-purifying particle respirator