Product Description 
 CCZ20 dust sampler is an instrument for the determination of the floating dust concentration in the ambient air. The instrument according to GB / T 20964-2007 "dust samplers General technical conditions JJG520-2005 dust sampling test procedures", Q/320582YLA001-2010 type dust sampler corporate standards and GB3836.1-2000, GB3836.4 -2000 standard ExibI rating (intrinsically safe) explosion-proof design, in the coal mine and the other containing the gases of explosion hazard workplaces. The sampler is equipped with two dust pre-trap, a full pre-trap determination of total dust concentration; the other is the determination of respirable dust concentration of the pre-trap, this pre-trap on hazards of respirable dust and respirable dust in the human body were separated, a collection can have both respiratory and non-breathing two dust samples, the separation efficiency of the internationally recognized "BMRC" curve standards, is a more reliable dust separation device. The instrument comes with a high-performance suction pump has a non-pulsating flow, load, vacuum, automatic timed sampling, flow stability, do a simple operation, easy to carry. 
 Technical parameters 
 Sampling flow rate: 10 ~~ 25L/min (adjustable) 
 Sampling flow error: ≤ 5% FS 
 Sampling flow stability: the sampler 30 min sampling flow stability of ≤ 3.0% FS 
 Load capacity: ≥ 200Pa 
 Continuous working time: ≥ 100min 
 Working Noise: ≤ 75dB (A) 
 Flowmeter accuracy: not less than 2.5. 
 Sampling time error: ≤ 0.1% 
 Sampling port of the average flow rate: 0.5 ~ 4.0m / s 
 Sampling accuracy: ≤ 10% 
 Intrinsically safe battery pack: Ni-H Ni-MH battery 2.3A / h, 6, series 4 0.51Ω/10W of the current limiting resistor placed in the battery box, epoxy potting, rated voltage Ue: 7.2 V; the highest output voltage U0: 8.4V; maximum output current I0: 3.0A. 
 Dimensions: 149 × 202 × 80 (mm) 
 Weight: ≤ 1.75Kg 
 Ambient temperature: 0 to 40 ℃ 
 Relative Humidity: ≤ 95% 
 Environmental atmospheric pressure: 80KPa ~ 110KPa containing coal mine gas or coal dust explosion hazard