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