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2.0 SPECIFICATIONS <br /> • Concentration measurement range (auto-ranging)': 0.001 to 400 mg/m3 <br /> • Scattering coefficient range: 1.5 x 10-6 to 0.6 m-1 (approx.) Q X=880 rum <br /> • Precision/repeatability over 30 days (2-sigma)2: <br /> ±2% of reading or±0.005 mg/m3,whichever is larger,for 1-sec.averaging time <br /> ±0.5% of reading or±0.0015 mg/m3,whichever is larger,for 10-sec.averaging time <br /> ±0.2% of reading or±0.0005 mg/m3,whichever is larger, for 60-sec. averaging time <br /> • Accuracy': ±5% of reading±precision <br /> • Resolution:0.1% of reading or 0.001 mg/m3,whichever is larger <br /> • Particle size range of maximum response: 0.1 to 10 µm <br /> • Flow rate range (model pDR-1200 only): ' to 10 liters/minute (external pump <br /> required) <br /> • Aerodynamic particle sizing range (modelpDR-1200 only): 1.0 to 10 µm <br /> • Concentration display updating interval: 1 second <br /> • Concentration display averaging time3: 1 to 60 seconds <br /> • Alarm level adjustment range 3:selectable over entire measurement range <br /> • Alarm averaging time 3: real-time (1 to 60 seconds),or STEL (15 minutes) <br /> • Datalogging averaging periods3: 1 second to 4 hours <br /> • Total number of data points that can be logged in memory:13,391 <br /> • Number of data tags (data sets): 99 (maximum) <br /> • Logged data: <br /> • Each data point: average concentration,time/date,and data point <br /> number <br /> • Run summary: overall average and maximum concentrations, <br /> time/date of maximum,total number of logged points,start <br /> 3 <br />