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Transducer thresholds detection for different coils.
| Coil Length (mm) | Magnetic Material | Range (mm) | Frequency Range (kHz) | Precision (Hz/μm) |
|---|---|---|---|---|
| 19.3 | Steel | 19 | 102 | 5 |
| Metglas | 19 | 313 | 16 | |
| 92.7 | Steel | 93 | 96 | 1 |
| Metglas | 93 | 308 | 3 | |
| 178 | Steel | 178 | 100 | 0.5 |
| Metglas | 178 | 305 | 1.7 | |
| 280 | Steel | 280 | 95 | 0.3 |
| Metglas | 280 | 335 | 1 |
