A recent white paper was published by Atmospheric Environment on the use of the Series-500 for accurate measurements of NO2 and Ozone gasses. This paper can be viewed at the link below in full.
Series-500 is available with a wide variety of sensor heads
The Aeroqual Series-500 has become a great monitor for portable gas detection, and accurate gas detection for toxic gas measurement. As the cost of GSS type sensors is much lower than traditional UV analyzers the industry has been slow to adopt the Series-500 and accept the use. However, case studies, and white papers show again and again that the Series-500 has a place in environmental monitoring.
Abstract
Low-power, and relatively low-cost, gas sensors have potential to improve understanding of intra-urban air pollution variation by enabling data capture over wider networks than is possible with traditional reference analysers. We evaluated an Aeroqual Ltd. Series 500 semiconducting metal oxide O3 and an electrochemical NO2 sensor against UK national network reference analysers for more than 2 months at an urban background site in central Edinburgh. Hourly-average Aeroqual O3 sensor observations were highly correlated (R2 = 0.91) and of similar magnitude to observations from the UV-absorption reference O3 analyser. The Aeroqual NO2 sensor observations correlated poorly with the reference chem-iluminescence NO2 analyser (R2=0.02), but the deviations between Aeroqual and reference analyser values ([NO2] Aeroq [NO2] ref) were highly significantly correlated with concurrent Aeroqual O3 sensor observations [O3] Aeroq. This permitted effective linear calibration of the [NO2] Aeroq data, evaluated using hold out subsets of the data (R20.85). These field observations under temperate environmental conditions suggest that the Aeroqual Series 500 NO2 and O3 monitors have good potential to be useful ambient air monitoring instruments in urban environments provided that the O3 and NO2 gas sensors are calibrated against reference analysers and deployed in parallel
The Series-500 now is available with a dual NO2 and O3 sensor head to make measurement of NO2 and O3 simple. With the data logging features the Series-500 is a valuable tool in environmental monitoring.
Dual O3 + NO2 Gas sensor for Aeroqual handheld monitors
