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.   Micromanometer Measuring Range：0~2000±1Pa, accuracy 1Pa

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)