Description Overview Suitable for medical and daily protective masks to test whether the resistance value of exhalation and inhalation to human body is up to the standard Relative standards: GB2626-2019, GB/T32610-2016, TAJ1001-2015 and so on Specifications Power: 220 V, 50 Hz Flowmeter range: 0 to 100 L/min, precision: 3% Micropressure transducer: ±1000 Pa, resolution 1 Pa VC defaults to (85 ± 1) L/min (can be set according to the demands) Specifications of test head die can be changed as required (standard GB2626, 3 pieces) Automatic test and evaluation of test results; eligibility criteria: expiratory resistance less than 250 Pa, inspiratory resistance less than 350 Pa Power: AC 220 V ± 10%, 50 Hz / 220 V, 60 Hz Instrument size: 620 × 650 × 850 mm (L × W × H) Weight: about 30 kg