A. Applicable Standards:

GB2626-2019: Respiratory protection—Non-powered air-purifying particle respirator,section 6.5, 6.6

GB/T32610-2016: Technical specification of daily protective mask

B. Testing Principles:

1.     Thetester is composed of an air source with an adjustable flow rate, a standardhuman head model, an inspiratory and expiratory circuit system, and a respiratoryresistance measurement system.

2.     Aspecial air path conversion element is adopted to ensure that the inspiratoryａnd expiratory circuit system are easy to be replaced.

3.     Digitaldisplay of respiratory resistance with zero point correction, accuracycorrection, and over-range alert function.

4.     Astandard flow meter is adopted to ensure flow control accuracy.

5.     Computercontrol and data acquisition system provide real-time detection and output ofpressure control, breathing frequency control, and respiratory resistance testdata.

C. Technical Parameters

1.     FlowRate: (85±1)L/min, 0.1L/min, better than ±2.5%

2.    Head Model：L/M/S (New Standard)

3.     PressureRange: 1500Pa±0.1Pa, better than 1%

4.     DataStorage: 500 Sets

5.     Dimensions:(W×D×H) (600*600*750)mm

6.     Weight:about 35kg

7.     PowerDissipation: 1.3w

8.     AC220/50HZ