EDM665 WRAS(Wide Range Aerosol System)寬粒徑氣溶膠粒徑譜儀,是將光學粒徑譜（OPC）和 掃描電遷移率粒徑譜儀（SMPS+C）結合起來分析顆粒物粒徑的設備，光學粒徑譜（OPC）主要用于微米級的顆粒的監測，OPC將監測31個通道，掃描電遷移率粒徑譜儀（SMPS+C）用于納米顆粒研究，掃描電遷移率粒徑譜儀（SMPS）將監測44個通道。
EDM665 WRAS寬粒徑氣溶膠粒徑譜儀粒徑監測范圍為5nm到32um，總的可以分為70多個通道，系統軟件將自動繪制粒徑和濃度分布圖。
Measurement range
Optical device
- 71 size channels
from 5.5 nm up to 32 μm
- Minimum scan time of 300 seconds
- Concentration range from 1 to 107 P/cm3 
Optical device
- 71 size channels
from 5.5 nm up to 32 μm
- Minimum scan time of 300 seconds
- Concentration range from 1 to 107 P/cm3
- Size range: 250 nm to 32 μm
31 size channels
- Particle counts: 1 to 2 x 103 P/cm3
- Sample flow: 1.2 l/min
- Reproducibility: 3% in max. range
SMPS+C
Size range: 5.5 nm to 350 nm
44 size channels
- Particle counts: 0 to 107 P/cm3
- Sample flow: 0.3 liters/min
- Auto refill: Butanol refill of internal
tank simply by connecting
the bottle
- Condensate
removal: Continuous evacuation by
micro-pump into a
collecting flask
Operating conditions
- Ambient temp.: -20°C to +55°C
- Power supply : 110/220 VAC, 50/60 Hz
- Power consumption: 750 W
Dimensions & weight incl. A/C
- Size: 60 x 60 x 120 cm
- Weight: 120 kg
- Sample pipe: 1.5 m (3 m optionally avail.)