A. Scope of Application
Accordingto GB 2626-2006, GB 2890-2009, GB 2626-2016, and GB 6220 non-poweredair-purifying particle standards. It is used to test face mask breather valveairtightness.
B. Features:
Thetester can only detect half mask. Each sample must not have the followingconditions:
1. Whenthe pumping flow rate has reached 500 L/min, the system negative pressurecannot reach 1180 Pa.
2. Thetime for the exhalation valve to return to normal pressure is less than 20s.
C. Technical Parameters
1. Volume:150±10mL
2.
3. Flowmeter Measuring Rage：0～1000mL/min
4. FlowmeterAccuracy: 3%
5. DigitalDisplay Flow Rate
6. TimerAccuracy: 0.1s
7. AirPump Speed: 2L/min
8. Real-timedisplay of test pressure
9. Meetthe airtightness test of 6.14
10. PLCcontrol, touch screen display
11. AC220/50HZ
D. Components:
1. HeadModel (1 Set)
2. Respiratorypressure control system (1 Set)
3. MicroflowSensor (1 Set)
4. MicromanometerSensor (1 Set)
5. SiemensPLC programmable control system (1 Set)
