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| Brand | Acclima |
|---|---|
| Origin | USA |
| Model | TDR-315N |
| Measurement Principle | Time-Domain Reflectometry (TDR) |
| Output Interface | SDI-12 |
| Probe Length | 15 cm |
| Waveform Rise Time (20–80%) | 300 ps |
| Timebase Resolution | 5 ps |
| Incident Pulse Amplitude | 2.3 V |
| Volumetric Water Content Range | 0–100% VWC |
| VWC Accuracy | ±2% FS |
| Dielectric Constant Range | 1–100 |
| EC Range (Bulk) | 0–6000 µS/cm |
| EC Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2000 µS/cm), ±5% (2000–5000 µS/cm) |
| Temperature Range | −40 to +60 °C |
| Temp Accuracy | ±0.25 °C (5–35 °C), ±0.5 °C (−15 to +50 °C) |
| Housing | Waterproof Epoxy-Filled Enclosure |
| Cable | 5 m, 3-conductor, IP68-rated |
| Power Supply | 6.5–15 V DC |
| Quiescent Current | 10 µA |
| Active Current | 118 mA @ 12 V DC |
| Dimensions (Sensor Body) | 210 × 53 × 20 mm |
| Probe Diameter | 3.5 mm |
| Mass (Sensor Only) | 105 g |
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