Table 3.
Sensor | Sensitivity (Hz/ppm) | Limit of Detection (ppm) | Response Time (s) | ||||||
---|---|---|---|---|---|---|---|---|---|
Acet. | Etha. | Ammo. | Acet. | Etha. | Ammo. | Acet. | Etha. | Ammo. | |
S1 | 20 | 38 | 9 | 1.5 | 0.8 | 3.2 | 33 | 30 | 24 |
S2 | 28 | 72 | 19 | 1.1 | 0.5 | 1.6 | 30 | 40 | 27 |
S3 | 8 | 10 | 11 | 3.6 | 3.0 | 2.9 | 36 | 38 | 38 |
S4 | 15 | 11 | 10 | 2.1 | 2.8 | 2.9 | 44 | 36 | 41 |