The compact MiniWRAS is the only portable instrument on the market that allows simultaneous and precise real-time monitoring of both micron-sized and nanoparticles. 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.
Applications include nanoparticle and PM monitoring (e.g. PM₂.₅), monitoring Indoor Air Quality (IAQ) in buildings, IAQ in vehicles, aeroplane cabins, cockpits, buses, and trains, nanoparticle source identification, workplace monitoring, and R&D testing in industry.
How it works
The Mini Wide-Range Aerosol Spectrometer uses a simple laser scatter detection module to detect particles from 0.253 – 35 µm, plus a Faraday Cup Electrometer (FCE) to detect nanoparticles (10 – 193 nm). The FCE is much smaller than a CPC/SMPS+C and does not require a supply of butanol, making it the better choice for portable nanoparticle instruments like the 1371 MiniWRAS.
Servicing
Data sheets and specifications are subject to change, and Enviro Technology cannot be held responsible for inaccuracies in manufacturer-issued data sheets. To confirm specifications and obtain the latest issue of the data sheet, please contact us.
Datasheet
Mini Wide-Range Aerosol Spectrometer (Model 1371)
Specifications
- Measured parameters: dust fractions acc. to EN 481 (inhalable, thoracic, respirable)
- PM₁₀, PM₂.₅, PM₁, number concentration and size distribution, dust mass 0 – 100 000 µg/m3
- Particle size range 10 nm – 35 µm (10 – 193 nm electrical, 0.253 – 35 µm optical)
- Size channels: 41 (10 electrical and 31 optical)
- Particle number: 3 000 – 500 000 p/cm3 (electrical)
- 0 – 3 000 000 p/L (optical)
- Reproducibility: > 97% of total measuring range (optical)
- Detection principle optical light scattering at single particles;
- Detection volume aerodynamically focused, no border zone error
- Optical cell diode laser 660 nm
- Detector fast signal processing with 2 µs pulse length, 2 x 16 raw data channels
- Time resolution: 6 s, 31 channels (storage interval 1 min)
- Detection principle: electrical electrical mobility spectrometer with Faraday Cup Electrometer
- Detector sensitivity: 0.25 fA
- 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
- Operation GRIMM MiniWRAS software (wireless or data cable)
- Interfaces Bluetooth, USB, RS-232
- Analog input external sensor for temperature and relative humidity
- Power supply in: 100 – 240 VAC, 47 – 63 Hz, out: 18 VDC, 2.5 A
- Battery Li-ion 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)
- Weight 7.6 kg (16.8 lbs)
- Operating conditions +4 to +40°C (39 – 104°F), RH < 95%, non-condensing
