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| Brand | Xinxianda |
|---|---|
| Model | KJD-2000R |
| Detection Principle | Electrostatic Collection + Alpha Spectrometry |
| Radionuclides | ²²²Rn and ²²⁰Rn |
| Measurement Range | 3.7–925,000 Bq/m³ (0.1–25,000 pCi/L) |
| Detection Sensitivity | 0.2 CPM/pCi/L |
| Pump Flow Rate | 1 L/min |
| Measurement Duration | 10 min (soil), 60 min (air or water) |
| Uncertainty | ≤10% (k=2) |
| Data Storage | 1,000 alpha spectra |
| Power Supply | 12 V/7 Ah rechargeable battery (≥10 h operation) or AC 220 V |
| Operating Environment | 0–50 °C, ≤95% RH |
| Dimensions | 300 × 200 × 180 mm |
| Weight | 5 kg |
| Detector Type | Passivated implanted planar silicon (PIPS) alpha spectrometer with gold-silicon surface barrier configuration |
| Calibration Sources | Certified radon chamber or liquid ²²⁶Ra standard |
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