Grassy

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 Wavelength

 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 (User setting)

1, 5, 10, 30, 60, or 300 seconds

Flow Rates

Internal pump provides 25, 50, 75, 100, 125, 150, 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

Temperature, Relative Humidity, Altimeter/Barometer, Accelerometer

Dimensions

 L: 165.20 mm (6.50 in), W: 125.20 mm
(4.93 in), D: 39.70 mm (1.56 in)

Weight

715 grams (25.22 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

 USB 2.0, 3.3V TTL Serial, DC input via barrel jack, Aerosol sample inlet and outlet ports

USB Communication / 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

Operation Environment

5 ~ 40 °C operating, non-condensing.

Included

 microAeth MA300, 1 MA300/350 Filter Tape Cartridge,
Barrel jack AC adapter with 1 territory-specific plug,
USB communication/charging cable,
1 one meter sampling hose with swivel tube connector,
Lapel clip for sampling hose.
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, Serial to USB converter cable, Serial to bare leads cable, Portable Aerosol Dryer

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.