microAeth® / MA350

Tech specs

Measurement Method
Real-time Aethalometer® method, 5 wavelength absorption analysis by measuring the rate of change of transmitted light due to continuous particle deposition on filter. Measurement at 880 nm interpreted as concentration of Black Carbon (‘BC’). Measurement at 375 nm interpreted as Ultraviolet Particulate Matter (‘UVPM’) indicative of woodsmoke, tobacco, and biomass burning.
Measurement Wavelengths
880 nm, 625 nm, 528 nm, 470 nm, 375 nm
DualSpot® Loading Compensation
Real-time analysis by measuring the rate of change in absorption of transmitted light due to the continuous collection of aerosol on filter. Simultaneous collection on two spots in parallel at different flow rates.
Timebases
1, 5, 10, 30, 60, or 300 seconds
Flow Rates
Internal pump provides 50, 75, 100, 125, 150 or 170 ml/min. DualSpot® compensation not compatible with all settings.
Measurement Range
Per sampling location, 0-1 mg BC/m3, filter sampling location lifetime dependent on concentration and flow rate setting, decreasing proportionally with lowest wavelength optical source enabled:
IR only mode, average 5 μg BC/m3 for 24 hours at 100 ml/min
IR only mode, average 100 μg BC/m3 for 3 hours at 50 ml/min
IR only mode, average 1 mg BC/m3 for 15 minutes at 50 ml/min
Measurement Resolution
0.001 μg BC/m3
Limit of Detection
30 ng BC/m3, 5 min timebase., 150 ml/min flow rate, SingleSpot™
Pump Options
Standard internal diaphragm pump
Flow Control
Internal mass flowmeters with closed-loop control
Filter Material / Capacity
MA300/350 Filter Tape Cartridge with Polytetrafluoroethylene (PTFE) material (85 sampling locations)
Sampling
3 mm diameter spot(s) created on filter tape. User selectable DualSpot® or SingleSpot™ mode.
Environmental Sensors
Accelerometer, Relative Humidity, Temperature, Altimeter/Barometer
Dimensions
L: 199.90 mm (7.87 in), W: 99.82 mm (3.93 in), D: 69.85 mm (2.75 in)
Weight
965 grams (34.04 ounces)
Memory
16 GB internal flash memory, providing storage for 31,250,000 data lines; 1 second timebase: 361 days of data.
On-board Interface
Low power screen, 3 buttons
Location Services
GPS with Internal Antenna
Date/Time Format
ISO 8601 with satellite synchronization or manual computer synchronization
Wireless
802.11 b/g/n Wi-Fi with AES hardware encryption, Bluetooth Low Energy. Available in future firmware releases.
Connections
Via external sealed connector for 3.3V TTL Serial and DC input via barrel jack, Aerosol sample inlet and outlet ports, USB 2.0 on inside panel
USB Communications / Client Application
USB connectivity to cross-platform microAeth® Manager software available on macOS® and Windows®. microAeth Manager software is included and facilitates settings configuration and data download. Exported data can be uploaded to AethLabs Dashboard server for processing and visualization.
Serial Communication
3.3V TTL serial connectivity for uploading new instrument firmware, flow calibration, streaming data and polling protocols to request data, modify settings and control. Command line interface (CLI) polling protocols: AethLabs protocol and Bayern-Hessen protocol.
Total Run Time
Up to 56 hours at 60 second timebase, 100 ml/min flow rate on single battery charge. Run time may vary due to PM concentrations and settings.
Battery
Internal 3.6V 12800 mAh (46.08 Wh), 4 cell rechargeable lithium-ion battery
Charging
Fast charging DC via barrel jack AC adapter (~11.75 hours to full charge, instrument turned off) or
USB charging (~25.75 hours to full charge, instrument turned off)
Power Supply Adapter: Input: 100~240 VAC 50/60Hz 0.4A, Output: 5VDC / 2A, with option for Type A, C, G, or I plug
Operating Environment
5 ~ 40 °C operating, non-condensing.
Included
microAeth MA350, 1 MA300/350 Filter Tape Cartridge, MA350 Sealed connector to DC barrel jack and serial port cable, Barrel jack AC adapter with 1 territory-specific plug, USB communication/charging cable, 2 one meter sampling hoses with swivel tube connectors. Cross-platform microAeth® Manager software and manual available for download via AethLabs website
Accessories & Consumables
MA300/350 Filter Tape Cartridge, MA Series Flow Calibration Kit, microCyclone™ PM2.5 Size-selective Inlet, MA350 Sealed connector to bare leads cable, Serial to USB converter cable, Serial to bare leads cable, Portable Aerosol Dryer, MA350 Pole kit
Specifications are subject to change without notice. microAeth MA Series products are protected by patent #8,411,272. Additional patents pending. Aethalometer® and DualSpot® are trademarks of Magee Scientific Corp. used under license.