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| Brand | Active Spectrum |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SM100 |
| Instrument Type | Portable |
| Detection Channels | 1 or 4 (configurable) |
| Measured Parameter | Volumetric Water Content (VWC) |
| Maximum Sample Mass Capacity | 1 kg |
| Operating Voltage | 3–5 V DC @ 6–10 mA |
| Output Signal | Analog voltage (0.5–1.5 V at 3 V excitation |
| Oscillation Frequency | 70–80 MHz |
| Resolution | 0.1% VWC |
| Accuracy | ±1–3% VWC (for soil EC < 8 mS/cm) |
| Sensing Volume | 6 cm × 2 cm × 0.3 cm |
| Standard Cable Length | 1.8 m (optional: 6 m |
| Handheld Meter Operating Temperature | −40 °C to +50 °C |
| Data Storage | ≥6 months continuous logging |
| Measurement Time | ≤1 s per reading |
| Interface | 2.5 mm stereo jack (3-conductor) |
| Data Transfer | USB cable |
| Enclosure Rating | IPX4 (splash-resistant) |
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