Table 1.
Sensors selected for collocation ad hoc field testing (SAFT).
| Sensor/manufacturer | Measured pollutants/internal sensor (units) | Mechanism | N |
|---|---|---|---|
| PMS-SYS-1/Shinyei (Japan) | PM2.5 (μg m−3) | Light scattering | 2 |
| Dylos Particle Counter (DC1100-PRO-PC)/Dylos Corporation (Riverside, CA, USA) | Particle ≥ 0.5 μm (pt 0.01 cf−1)a | Light scattering | 2 |
| Dylos Particle Counter, DC1100-PC/Dylos Corporation (Riverside, CA, USA) | Particle ≥ 1 μm (pt 0.01 cf−1)a | Light Scattering | 1 |
| Airbeam/HabitatMap (Brooklyn, NY, USA) | PM2.5 /Shinyei PPD60PV (hppcf) | Light scattering | 3 |
| Aercet 831/MetOne (Grants Pass, OR, USA) | PM2.5 (μg m−3)a | Light scattering | 3 |
| SM50/Aeroqual (New Zealand) | O3 (ppm) | Gas-sensitive semiconductor (GSS) | 2 |
| Cairclip/Cairpol (France) | NO2 and O3 combined (ppb) | Electrochemical | 2 |
| Air Quality Egg/Wicked Device (Ithaca, NY, USA) | NO2/e2v MiCS-2710, CO/e2v MiCS-5525, VOC/e2v MiCS-5521, PM/Shinyei PPD42 (pt 283 mL−1) | Metal oxide sensors for gases, light scattering | 3 |
| AQMesh (Gen. 3)/AQMesh Corp. (UK) | NO, NO2, CO, SO2, O3 (all in ppb) | Electrochemical | 2 |
a
Note that the Dylos and the MetOne also include additional size channels in their data output. The Dylos DC1100-PRO-PC and DC1100-PC include a larger particle size channel representing particles ≥ 2.5 μm and ≥ 5 μm, respectively. The MetOne sensor includes size channels for PM1, PM4, PM10, and TSP.