PC-3A direct-reading laser dust detector - Beijing days Rui Boyuan Technology Co., Ltd. First, the major technical indicators 1, respirable particulate matter measuring range: 0.001 ~ 10mg / m3; 2, cut size: 10 ~ 0.3um; 3 reproducibility error measurement instrument: the mean relative standard deviation <7%; 4, detection sensitivity: 0.0001mg / m3; 5, measurement accuracy: ± 10% (relative correction particles) Particulate Trap characteristics: Da50 = (10 ± 0.5) um; δg = 1.5 ± 0.1; 6, weighing instruments and Comparison total uncertainty (ROU) <25%; 7, sampling time: 1 minute 8, the noise: less than 15db 9, Working Power: No external power supply Occasional built-in battery; the external power adapter connected to the occasion with a 220V AC power. In the case of the built-in battery is fully charged, continuous measurement of five hours 10, volume: Host 230mm × 120 mm × 42 mm; 11, weight; 0.40kg.