AQMesh
AQMesh The proven small sensor air quality monitoring system AQMesh has been designed to offer a robust and easyto-use air quality monitoring system that can deliver localised real-time readings, improving the accuracy and scope of gathering air quality data to support initiatives to reduce air pollution and its risk to human health. Power Option Expected life span* Notes External DC > 5 years 9 – 24V DC Lithium metal battery pack #10 External high capacity battery pack #10 > 24 months > 60 months Dependent on measurement strategy & pod spec Dependent on measurement strategy & pod spec NiMH rechargeable battery pack > 4 months Dependent on measurement strategy & pod spec Solar power pack > 5 years Change internal lead-acid battery every 24 months Sensor life Sensor type Expected life span Electrochemical 2 years #8 NDIR 5 years Solid state 5 years Omnidirectional microphone 5 years Optical particle counter 2 years #8 Physical ENCLOSURE ABS, protection IP65 ENVIRONMENTAL Temperature range: - 20 to + 40 °C Humidity range: 15 to 95 % RH MOUNTING Pod supplied with mounting bracket for walls / posts APPROX. SIZE & WEIGHT Length: 170 mm Width: 220 mm Height (excl antenna): 250 mm Height (incl antenna): 430 mm Weight: 2 – 2.7 kg Data & Communications COMMUNICATIONS Data sent to remote server via 2G or 3G SIM (data access contract is required) MEASUREMENT PERIOD Variable, from 1 min to 1 hr TRANSMISSION FREQUENCY Variable, from 5 mins to 12 hr intervals SERVER SOFTWARE Web browser based, processing of sensor output to give reading, database storage on secure server DATA ACCESS Tables, graphs, data download, multi-user access, password controlled, optional API data access
AQMesh SPECIFICATIONS † Measurement Sensor Sensor Type Units Range #1 NO Electrochemical ppb or μg/m 3 0 to 20,000 ppb NO 2 Electrochemical ppb or μg/m 3 0 to 20,000 ppb NO x Electrochemical ppb or μg/m 3 0 to 40,000 ppb O 3 Electrochemical ppb or μg/m 3 0 to 20,000 ppb CO Electrochemical ppb or μg/m 3 0 to 1,000,000 ppb SO 2 Electrochemical ppb or μg/m 3 0 to 100,000 ppb H 2 S Electrochemical ppb or μg/m 3 0 to 100,000 ppb CO 2 NDIR ppm or mg/m 3 0 to 5,000 ppm Pod temperature Solid state °C or °F -20 °C to 100 °C Pressure Solid state mb 500 to 1500 mb Humidity Solid state % 0 to 100 % Noise #6 Omnidirectional mic dB 35 to 100 dB SPL Particle count Optical particle counter Particles/cm 3 0.30 to 30 μm #5 PM 1 Optical particle counter μg/m 3 0 to 100,000 μg/m 3 #5 PM 2.5 Optical particle counter μg/m 3 0 to 150,000 μg/m 3 #5 PM 4 Optical particle counter μg/m 3 0 to 225,000 μg/m 3 #5 PM 10 Optical particle counter μg/m 3 0 to 250,000 μg/m 3 #5 PM Total Optical particle counter μg/m 3 0 to 350,000 μg/m3 Lat, long, alt GPS decimal N/A Performance Sensor Limit of confidence #2 Precision #3 Accuracy #4 NO < 5 ppb > 0.9 R 2 1 ppb NO 2 < 5 ppb > 0.85 R 2 4 ppb NO x < 10 ppb > 0.9 R 2 4 ppb O3 < 5 ppb > 0.9 R 2 5 ppb CO < 50 ppb > 0.9 R 2 20 ppb Product designs and specifications are subject to change without prior notice. The user is responsible for determining the suitability of the product. *h denotes when used with optional heated inlet for PM monitoring #1 From sensor manufacturer’s specification. This data was derived from independent lab tests. Standard test conditions are 20°C and 80% RH and in the absence of interfering gases. Tested range is -30°C to +30°C. #2 Readings provided below this level, however due to interferences the level of uncertainty is greater than at higher levels of the target pollutant. #3 Correlation co-efficient derived from extensive global co-location comparison testing against certified reference. #4 Best ‘out of the box’ accuracy without any local scaling/calibration against reference. #5 Mass estimation based on standardisation of particle shape and density. Range is based on optical range of 0.3-30mm particle size. #6 Noise measures average noise and peak noise. Peak noise is the highest recorded value over the gas reporting interval while average noise is calculated using all noise samples over the same period. #7 Wind speed and direction stated accuracy is at 12ms-2 #8 Electrochemical sensors and particle sensors carry a 12-month warranty. #9 Detail of maintenance required is listed in the standard operating procedure. #10 Subject to carrier restrictions on dangerous goods † Gas algorithm v5.0 PM algorithm v3.0 (and v3.0h) SO 2 < 10 ppb > 0.7 R 2 20 ppb H 2 S < 5 ppb > 0.7 R 2 1 ppb CO2 < 1 ppm > 0.9 R 2 30 ppm Sensor Limit of detection Precision #3 Accuracy #4 Pod temperature 0.1 °C > 0.9 R 2 ± 2 °C Pressure 1 mb > 0.9 R 2 ± 5 mb Humidity 1 % RH > 0.9 R 2 ± 5 % RH Noise #6 20 Hz to 20 kHz > 0.8 R 2 1 dB #5 PM 1 0 μg/m 3 > 0.9 R 2 5 μg/m 3 #5 PM 2.5 0 μg/m 3 > 0.9 R 2 5 μg/m 3 #5 PM 4 0 μg/m 3 > 0.9 R 2 5 μg/m 3 #5 PM 10 0 μg/m 3 > 0.85 R 2 5 μg/m 3 #5 PM Total 0 μg/m 3 > 0.85 R 2 5 μg/m 3 ecotech.com/aqmesh | 7
