| Flow measurement | 0 – 100 mL /min |
|---|---|
| Differential pressure | -500 – 0 Pa |
| Test-chamber volume | 5 L |
| Power supply | AC 100 – 240 V |
| Power consumption | 50 W |
| Dimensions (L × W × H) | 320 × 250 × 250 mm |
| Weight | 6 kg |
The SC–RT–N1704 measures the leakage air-flow of respirator exhalation valves to verify airtightness against the latest GB 2626–2019 and NIOSH 42 CFR 84 requirements. An integrated oil-free vacuum pump automatically establishes a stable negative pressure; the test sequence is fully software-controlled, with results shown on a touch screen and printed instantly. Ideal for valve makers, mask factories and third-party labs handling incoming, in-process or finished-goods QC.
| Standard | Clause | Test Item |
| GB 2626-2019 | § 6.7 | Exhalation-valve leakage |
| NIOSH 42 CFR 84 | Subpart K | Exhalation-valve leakage |
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