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| Brand | Xianxinda |
|---|---|
| Model | CIT-3000F |
| Detector Type | Gamma Spectrometer |
| Scintillator | NaI(Tl), Ø75 mm × 75 mm |
| Shielding | Lead chamber, 100 mm wall thickness, 200 mm internal diameter |
| MCA Channels | 1024 / 2048 |
| Energy Resolution | <7% at 661 keV (¹³⁷Cs) |
| Differential Nonlinearity | 0.2% |
| Integral Nonlinearity | 0.01% |
| Pulse Shaping Time | 2.0 µs |
| Background Count Rate | ≤6 cps (50–3000 keV) |
| Measurement Uncertainty | ≤10% (k=2) |
| Stability | Peak shift ≤1% over 24 h |
| Sample Mass | 500 g |
| Acquisition Time Range | 10–65,500 s |
| Operating Temperature | 0–50 °C |
| Relative Humidity | ≤95% |
| Power Consumption | <300 mA |
| Host Dimensions | 31 × 32 × 13 cm |
| Host Weight | 3 kg |
| Software | Windows-based spectral analysis suite with Chinese GUI, Excel export, calibration database, and inverse matrix quantification algorithm |
| Compliance | JJG 417–2006, GB 6566–2010, CNAS-accredited calibration certificate issued by China National Institute of Metrology (CNIM) |
| Brand | Xinxianda |
|---|---|
| Model | CIT-2000F |
| Instrument Type | Gamma Spectrometer |
| Detector | 50 mm × 50 mm NaI(Tl) Scintillation Crystal |
| Energy Range | < 4 MeV |
| Energy Resolution | < 8% @ 662 keV (¹³⁷Cs) |
| Dose Rate Range | 0–9999 µSv/h (Environmental Monitoring) / 0–9999 γ (Uranium Exploration) |
| Sensitivity | ≥350 cps per µSv/h |
| Stability | ≤±7% over 8 h operation |
| Accuracy | Absorbed Dose Rate Deviation ≤±10% vs. Theoretical Value |
| Operating Temperature | –10°C to +50°C |
| Relative Humidity | ≤95% RH |
| Dimensions | 360 mm × 90 mm × 220 mm |
| Weight | 2.0 kg |
| Power Consumption | <160 mW |
| ADC | 16-bit, 1 MSPS |
| Data Storage | Up to 2 million spectral records |
| Measurement Modes | Timed & Manual |
| Display Units | µSv/h, γ, µSv, CPS, ppm, % |
| Housing | Anodized Aluminum Alloy |
| Battery | Rechargeable Li-ion with Low-Voltage Warning |
| Brand | Xinxianda |
|---|---|
| Model | CIT-3000F |
| Detector | Ø75 mm × 75 mm NaI(Tl) crystal |
| Energy Resolution | ≤8% at 662 keV (¹³⁷Cs) |
| Uranium (eU) Range | 2–1000 ppm |
| Thorium (eTh) Range | 3–1000 ppm |
| Potassium (eK) Range | 0.5–100 wt% |
| U Channel | 1.60–1.90 MeV |
| Th Channel | 2.40–3.00 MeV |
| K Channel | 1.30–1.60 MeV |
| Total Spectrum | 0.5–3.00 MeV |
| Accuracy | eU/eTh ≤ ±7%, eK ≤ ±12% |
| Pulse Shaping Time | 2 µs |
| Data Storage | 2 million spectra |
| Power | Rechargeable 2.4 Ah Li-ion battery, ≤200 mW |
| Operating Temp | 0–50 °C |
| Relative Humidity | ≤90% at 50 °C |
| Weight | Control Unit 0.6 kg, Detector 3.0 kg |
| Interface | RS-232 |
| Brand | NewSenda |
|---|---|
| Origin | Sichuan, China |
| Model | CIT-3800 HPGe |
| Instrument Type | Laboratory Gamma-Ray Spectrometer |
| Detector Type | High-Purity Germanium (HPGe) |
| Measurement Range | 5 keV – 10 MeV |
| Energy Resolution | ≤1.8 keV FWHM at 1.332 MeV (⁶⁰Co) |
| Peak Area Precision | <3% RSD (0–50,000 cps) |
| Sample Form | Solid |
| Cooling Method | Liquid Nitrogen or Electromechanical Cryocooler |
| Shielding | Low-Background Lead Castle (≥10 cm Pb + Cu/Cd liners) |
| Digitization | Digital Pulse Processing (DPP) with 14-bit ADC, 100 MS/s sampling |
| Brand | Xianxian Da |
|---|---|
| Model | CIT-3000DPP |
| Detector Type | Scintillation-based Gamma Spectrometer |
| Crystal | NaI(Tl), Φ50 mm × 50 mm (optional Φ75 mm × 75 mm) |
| Energy Resolution | ≤6.5% FWHM at 662 keV (¹³⁷Cs) |
| ADC Sampling Rate | 20–80 MS/s |
| Pulse Shaping Time | 1–5 µs |
| MCA Channels | 256–4096 |
| Differential Nonlinearity | <0.1% |
| Integral Nonlinearity | <0.01% |
| Programmable Gain | 1–4095 steps |
| Digital Pulse Processing (DPP) | Threshold-free acquisition architecture |
| Communication Interfaces | CAN, RS-232, USB 2.0, TCP/IP |
| Power Consumption | <1 W |
| Operating Temperature Range | –10 °C to +50 °C |
| Compliance | Meets IEC 61000-4 EMC standards |
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