MINI WIDE RANGE AEROSOL SPECTROMETER
Electrical Mobility and Optical Particle Counting & Sizing
The compact Mini Wide Range Aerosol Spectrometer (MiniWRAS) is the only portable instrument on the market that allows simultaneous and precise real-time monitoring of both micron-sized and nano particles.
Designed and specifically built for indoor air quality monitoring, the MiniWRAS is a fit for purpose, state-of-the-art system that combines optical and electrical particle detection in one single device.
This system offers many features, such as a 10 nm to 35 µm ultra-wide particle size range, simultaneous PM1, PM2.5, and PM10 measurement, 41 high resolution particle size channels, remote data transmission and instrument control. Easy to use, transport and deploy, it can be flexibly applied in various IAQ monitoring projects.
The MiniWRAS is the optimal solution for monitoring indoor PM values taking the nanoparticles into account and revealing the particle size distribution in the small nanometer range. It´s a perfect tool for indoor air quality monitoring at working places, inside vehicles, airplane cabins, trains, R&D testing, and many more.
- ultra-wide size range from 10 nm to 35 μm
- PM10, PM2.5, PM1 and particle size distribution, particle surface, and dust mass
- high precision over 41 equidistant channels
- no consumables
- non-radioactive particle charger
- versatile data aquisition and communication interfaces (Bluetooth, USB, RS-232)
- easy to use with GRIMM software
- optional sensor for temperature and relative humidity
- self-test of all optical and pneumatic components for high quality standards
- rinsing air for protecting laser and detector in optical cell
- nanoparticle and PM monitoring (e. g. PM2.5)
- Indoor Air Quality (IAQ) in buildings
- IAQ in vehicles, airplane cabins, cockpits, busses, trains
- nanoparticle source identification
- workplace monitoring
- R&D testing in industry
dust fractions acc. to EN 481 (inhalable, thoracic, respirable) PM10, PM2.5, PM1,
|0 – 100 000 μg/m3|
particle size range
10 nm – 35 μm (10 – 193 nm electrical, 0.253 – 35 μm optical)
|41 (10 electrical and 31 optical)|
|3 000 – 500 000 p/cm³ (electrical) |
0 – 3 000 000 p/L (optical)
>97% of total measuring range (optical)
detection principle optical
light scattering at single particles;
|optical cell||diode laser 660 nm|
|fast signal processing with 2 μs pulse length, 2 x 16 raw data channels|
|6 s, 31 channels (storage interval 1 min)|
detection principle electrical
|electrical mobility spectrometer with Faraday Cup Electrometer|
|time resolution||60 s, 10 channels 6 s each (storage interval 1 min)|
|volume flow||1.2 L/min, ± 3% constant due to self-regulation|
|internal rinsing air flow rate||0.4 L/min, protects laser optics, reference air for self-test|
GRIMM MiniWRAS software (wireless or data cable)
Bluetooth, USB, RS-232
|external sensor for temperature and relative humidity|
in: 100 – 240 VAC, 47 – 63 Hz, out: 18 VDC, 2.5 A
|battery||Li-lon battery, 14.4 VDC, 4.8 Ah for 8 h operation|
dimensions (h x w x d)
34 x 31 x 12 cm (13.4 x 12.2 x 4.7 in)
|7.6 kg (16.8 lbs)|
|+4 to +40°C (39 - 104°F), RH < 95%, non-condensing|
Radial-symmetrical sampling head
Carrying case with foam inserts for 1371
Isokinetic sampling probe for flow rates from 2 to 25 m/s
external sensor for temperature and relative humidity
capillary diluter (1:10 or 1:100)
GRIMM developed a powerful software to visualize, process, and import as well as export your valuable measurement data.
This easy-to-use program is compatible to Windows XP and all later versions.
Please contact us for your for free trial version if you already own a GRIMM measurement device or more information if you are in the process of finding your measurement solution.