119 Specifications
Particulate Sensor
EVM Series User Manual
Specifications
Particulate Sensor
Method
Display Range
Display Resolution
Accuracy/Repeatability
Photometer
0.000- 200.0 mg /m
3
(Non-condensing)
0 to 20,000 µg/m
3
0.001
1
±15% (Calibrated to
Arizona road dust;
ISO 12103-1, A2 Fine
Test Dust)
Particulates
0.1 – 10 µm
N/A
*See note below
Particulate Sensor - General
Size
0.1 µm to 10 µm* (*
Note
: The photometer can detect particles up to 100 µm;
however, accuracy is reduced for sizes greater than 10 µm It may not be as
accurate.)
Impactor- mechanical
Top-mounted, rotary impactor particulate filter
Impactor settings
PM2.5, PM4, PM10 or PM at 1.67 Liter/minute flow rate
Measures
Real-time aerosol/dust concentration using a 90º optical light scattering
photometer to report total mass concentration (mg/m
3
or µg/m
3
) of particulate
matter
Gravimetric sampling
Flow: ± 5%, after calibration
Back-pressure @ gravimetric cassette
≥ 5 kPa
≥ 20 inches of water @ 1.67 L/min
Dust correction factors
Up to 8 User-defined particulate correction factors. To correct for variation from
“Arizona Road Dust”.
Life expectancy/Warranty
5,000 hours (for the laser photo-meter)/1 year warranty
Volatile Organic Compounds (VOCs) Gas Detector (PID Sensor)
Method & Detector
Display Range
Display Resolution
Accuracy/Repeatability
Low sensitivity PID
0.00 to 2,000 ppm or
mg/m
3
; (Non-
condensing)
0.01 ppm
±5% / 2%; (relative
Isobutylene) at cal value
High sensitivity PID
10.6 electron-Volt Photo-
Ionization Detector
0 – 50,000 ppb* or
μg/m
3
; (Non-condensing)
1 ppb
±5% / 2%; (relative
Isobutylene) at cal value
Life expectancy/Warranty
2,000 hours in clean air environment (replaceable bulb and grid)/ 1 year
warranty
APPENDIX
A
