| Sensors | Resp. time, t90 | Repeatab., detection limit | Calibra-tion | Drifts | Temperature | Humidity | Hysteresis | Gaseous Interference, ppb/ppb | Wind | Power supply | Cold-hot start | Field tests | Link to report | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | CityTech O3 3E1F | 1.3, 2.7 ppb | Linear 0 – 120 ppb, R²= 0.9996 | MACPoll | 7 – 37 / 5°C, Linear effect 8.0 and 6.6 ppb/°C R²=0.997 | 40-80/10%, Linear effect 2.29±0.14 and 0.06 ± 0.006 ppb/%, R²=0.523 |
O3: no effect, T, RH: ±10 ppb | NO2: 0.53 and 0.49, NO: -0.15, CO: 0.57 and 0.18 ppb/ppm, SO2: -0.098 and -0.074. | 1.5 -3.5/0.5 m/s (MACPoll) | 210-230/10V (MACPoll) | MACPoll | R² , slope, intercept | to be added | |
| 2 | CityTech NO2 3E100 | 80 s (MACPoll) | 4.5, 17.5 ppb | Linear 0 – 125 ppb, R²= 0.9994 | MACPoll | 7 – 37 / 5°C, Linear effect 26.7 ppb/°C R²=0.998 | 40-80/10%, Linear effect, 0.56±0.06 and 0.56±0.04ppb/%, R²=0.919 | NO2: no effect, T, RH: ±5 ppb | O3: 1.2 and 1.4, NO: -0.010, CO: -0.36 and -1.2 ppb/ppm, SO2: -3.0 and -2.5 | 1.5 -3.5/0.5 m/s (MACPoll) | 210-230/10V (MACPoll) | MACPoll | R² , slope, intercept | to be added |
| 3 | CityTech NO 3E50 | 24, 75 ppb | Linear 0-150 ppb, R²= 0.9944 | MacPoll | 7 – 37 / 5°C, Linear effect -53.4 ppb/°C R²=0.997 | 40-80/10%, linear effect -0.17 ± 0.05 ppb/%, R²=0.5087 | NO: no effect, T, RH: ±5 ppb | O3: -0.37 and -0.16, NO2: -0.12 and 0.23, CO: 18.8 and 2.2 ppb/ppm, SO2: -0.36 and 0.46 | 1.5 -3.5/0.5 m/s (MACPoll) | 210-230/10V (MACPoll) | MACPoll | R² , slope, intercept | ||
| 4 | CityTech CO 3E300 | 57, 150 ppb | Linear 0-9 ppm, R²=1.0000 | 7 – 37 / 5°C, Linear effect -25.6 ppb/°C R²=0.998 | 40-80/10%, no effect 0.04 ± 0.89 and 0.26 ± 0.81 ppb/%, R²=0.0045 | CO: no effect, T: , RH: not evaluated | O3: no effect, NO2: no effect, NO: 0.043 and 0.50, SO2: 0.083 | Not tested | R² , slope, intercept | |||||
| 5 | Membrapor O3/M-5 | Not tested | ||||||||||||
| 6 | Membrapor CO/MF-200 | Not tested | ||||||||||||
| 7 | Membrapor NO/C-25 | Not tested | ||||||||||||
| 8 | Alphasense O3-B4 (!:alphasense board) | 145 s | 7.6, 1 ppb | Linear 0-120 ppb, R²=0.9997 | MacPoll | NO2: , NO: , CO: ppb/ppm, SO2: | O3-B4 |
1 – O3-3E1F
Calibration
4 CityTech CO 3E300
Field tests
