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| Brand | Sanpu |
|---|---|
| Model | FD216 |
| Origin | Beijing, China |
| Manufacturer | Sanpu Instrument Co., Ltd. |
| Detection Principle | ZnS(Ag) Scintillation + Photomultiplier Tube (PMT) |
| Measurement Modes | Active Pump-Driven Air/Solid/Water Sampling |
| Sensitivity | ≥0.68 cpm/(Bq·m⁻³) |
| Background Count Rate | ≤0.3 cpm |
| Radon-in-Air Range | 3–100,000 Bq/m³ |
| Soil Radon Range | 300–300,000 Bq/m³ |
| Radon Exhalation Rate Range | 0.001–10.000 Bq/(m²·s) |
| Water Radon Range | 0.003–100 Bq/L |
| Repeatability Error | ≤5% (at 2000 Bq/m³, 65% RH, 25°C) |
| 8-h Drift | ≤10% |
| Power Supply | Rechargeable Li-ion battery (30 h continuous operation) or AC adapter |
| Operating Temp | −10°C to +40°C |
| Max. Relative Humidity | ≤90% at +40°C |
| Data Storage | 2000 records |
| Display | LCD |
| Interface | USB + Bluetooth printing |
| Dimensions | 330 × 210 × 170 mm |
| Weight | 5 kg (main unit) |
| Calibration & Traceability | Certified by National Institute of Metrology (NIM), China |
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