... channels, 3. Built-in printer CLJ-BII(D) Airborne Particle Counter Features:1. 1 cfm (28.3 lpm) flow rate2 ... Time≤10minOperating Time8hOutputBuilt-in PrinterEnvironment OperatingTemperature 10~35°C,Relative Humidity ≤75%Power Supply220V±10%,50Hz±2HzSize Channel0.3 ... DataTotal Counts, Counts/ft3 and Counts/m3Data CalculationFederal Standard 209E CalculationLight sourceLaser diode (30,000 hours mean ...