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Resonance frequency of the reader while coupling the wireless sensor at the minimum (20 °C) and maximum (50 °C) temperature tested for different distances.
| Distance (mm) | RH (%) | Freq. Change (kHz) |
|---|---|---|
| 10 | 50 | 18 kHz |
| 15 | 50 | 8 kHz |
| 10 | 70 | 30 kHz |
| 15 | 70 | 24 kHz |
