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MiniWRAS 1371
Portable wide-range aerosol spectrometer
The only portable instrument on the market that allows simultaneous and precise real-time monitoring of both micron-sized and nanoparticles. Designed for indoor air quality monitoring.
Functionality: Optical particle counting combined with measuring the eletrical mobility diameter
Features
- Two
measuring instruments in a single device
Combination of optical (OPC) and electrical (nanosizer) particle detection - One combined data set
PM10, PM2.5, PM1, inhalable, thoracic, and respirable particle number size distribution - 41 equidistant size channels
From 10 nm to 35 μm - Intelligent Li-ion battery
For portable use up to 10 hours - Flexible data acquisition and communication
With USB flash drive, Bluetooth and MiniWRAS software - Particle free purge air
For improving detection and reducing signal noise
Benefits
- Suitable for numerous applications
- No consumables or liquids
Fully portable, operation irrespective of position - No handling license required
Non-radioactive unipolar diffusion charging (DC) - Compact design
Allows easy integration into laboratory or mobile setups - Easy to use
- Status control via LEDs
- Start/stop button for stand-alone operation
Applications
- Workplace monitoring for both ultrafine particles (UFP) and dust mass fractions
- Nanoparticle source identification
- Indoor air quality (IAQ) in buildings
- IAQ in vehicles, airplane cabins, cockpits, busses, trains
- R+D testing in industry
- Nanoparticle and PM monitoring (e. g. PM2.5)
Technical Data
- Technical data
| Detection principle | Diffusion charging (DC), electrical mobility based sizing and detection in Faraday cup electrometer (FCE)Optical particle counter and spectrometer (OPC) using light scattering at single particles with diode laser |
|---|---|
| Output | PM10, PM2.5, PM1, dust mass fractions as per EN 481: Inhalable, thoracic, respirable particle number concentration and size distribution |
| Particle size range | 10 nm … 35.15 μm10 … 193 nm (electrical)0.253 … 35.15 μm (optical) |
| Size channels | 41 (10 electrical and 31 optical) |
| Particle number | 200 … 1,000,000 particles/cm³; depending on charging state (electrical) 0 … 5,300,000 particles/l (optical) |
| Dust mass concentration | 0 μg/m³ … 100 mg/m³ |
| Measurement uncertainty nanosizer | ± 40 % for number concentration and geometric mean diameter (electrical) |
| Counting efficiency OPC | 98.2 % for 0.3 μm, 99.5 % for 0.5 μm91.8 % for 1.0 μm, 91.0 % for 5 μmMeets ISO 21501-1 (optical) |
| Time resolution | 60 s for 10 channels, 6 s per channel sequentially, storage interval 1 min (electrical)6 s for 31 channels, storage interval 1 min (optical) |
| Volume flow rate | 1.2 l/min ± 3 % |
| Purge air (OPC) | 0.3 l/min dried, particle free air; minimizes noise level in FCE |
| Purge air (FCE) | 0.3 l/min dried, particle free air; minimizes noise level in FCE |
| Power supply | In: 100 … 240 VAC, 47 … 63 HzOut: 18 VDC, 2.5 A |
| Battery | Intelligent Li-ion-battery, 14.4 V, 98 Wh, 6.8 Ah for minimum 10 h operation, recharging: 5 h with power supply |
| Connectivity | Bluetooth, RS-232, USB flashdrive, analog input for meteorological sensors |
| Operating conditions | + 4 … +40 °C (39 … 104 °F), RH < 95%, non condensing, 533 … 1133 mbar |
| Transport and storage | –20 … +50 °C (–4 … 122 °F) RH < 95 % |
| Dimensions (H x W x D) | 34 x 31 x 12 cm (13.4 x 12.2 x 4.7 in) |
| Weight | 8.2 kg (18 lbs) |
USP
- Portable, battery-powered wide range aerosol spectrometer without the need for liquids