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Enabling better global research outcomes in soil, plant & environmental monitoring.

AQS918 Air Quality Station

AQS918 Air Quality Stations

The AWS918 – Air Quality Station 918 is a multi-parameter environmental grid monitoring station; a specialized small instrument for urban grid environment monitoring. It can monitor temperature, humidity, wind speed, wind direction, air pressure, PM2.5/10, SO2, NO2, O3, CO, H2S, NO, TVOC elements. The system uses modules for flexible configuration, has a small size and a low cost, and is suitable for gridding, intensive, and refined layout requirements.

Factor Measuring Range Resolution Accuracy Measuring Principle
Air Temperature -40°C to +60°C 0.1°C ± 0.3°C Platinum Resistance
Air Humidity 0% to 100% Rh 0.1% Rh ± 2% Rh Capacitance
Air Pressure 10~1300hPa 0.1hPa 1hPa Silicon piezoresistive
Wind Speed 0 to 60m/s 0.1m/s ±0.3m/s or ±3% Ultrasonic
Wind Direction 0 to 360° ±3° Ultrasonic
PM2.5 0 to 1000ug/m3 0.3ug/m3 ±10μg/m3 or 15% Laser scattering
PM10 0 to 1000ug/m3 0.3ug/m3 ±10μg/m3 or 15% Laser scattering


Factor Measuring Range Detection Limit
Measuring Principle
VOC 0 to 100ppm 5ppb PID
CO 0 to 1000ppm 0.1ppm Electrochemistry
NO2 0 to 20ppm 5ppb Electrochemistry
SO2 0 to 100ppm 5ppb Electrochemistry
O3 0 to 20ppm 5ppb Electrochemistry


System Standard
Power Supply 9 to 30Volts DC
Output SDI-12
Operating Voltage 9V to 30VDC
Operating Temperature -40°C to +60°C
Operating Humidity 0 to 100% Rh
Reliability Mean time between failures (MTBF), design value 85000h
Size 140mm x 140mm x 350mm
Weight 1.8KG
Cable 5m