... to-use machine; 2. Portable, six size channels, 3. Built-in printer CLJ-BII(D) Airborne Particle ... -BII(D)Flow rate1.0 cfm (28.3 lpm)Sensitivity0.3µmDisplayLCDSelf Clean Time≤10minOperating Time8hOutputBuilt-in PrinterEnvironment OperatingTemperature ... 10%,50Hz±2HzSize Channel0.3, 0.5, 1.0, 2.0, 3.0, 5.0(µm)Sample Period1min~10minClockDate and ... RS232/485) LCD screen & big flow rate Air Particle Counter