Sampling range: General dust and respirable dust Sampling flowrate: Respirable dust: 20L/min Gereral dust: 15-25L/min Error: ≦?.5% Loading capacity: ﹥1000Pa Timing range: Adjusted randomly between 0-99min Continuous working time: ﹥150min Anti-explosion model: Intrinsically safe model used in mine ibI(150 centigrade) Dimension: 200x130x80mm Weight: 1.9kgs