Long term measurement with PMS7003

Nowadays, the air quality of our cities is becoming increasingly important, which is affected by heating, traffic, and the industry. The air particle concentration is the most characteristic factor for air quality. In Hungary, we have the national air quality measurement system which contains certified laboratory instruments which also contain particulate matter sensor. These instruments are very expensive, and we don’t have enough measurement stations for the high-resolution measurement. If we were able to measure at several measurement points, we could provide clear information to the public about air quality through an online anomaly map. Nowadays’s more and more low-cost particle sensors are coming to the market. We tested some different kind of particulate matter sensor and we chose the PMS7003, which can measure in correlation with the certified instruments, but we didn’t have information how this is working during the long-term outdoor measurement. We developed a small measurement station and installed it near a certified instrument and now more than one year of measurement data are available. In this article we would like to show you the measured data and we made a comparison between the accurate instrument data.