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Product Details
1. Product Overview
The HM-G310 Radioactive Aerosol Monitor is a high-precision analytical instrument engineered for the quantitative determination of airborne radioactive aerosol contamination concentrations in nuclear environments. Designed for continuous, real-time radiological surveillance, the system monitors gaseous radioactive effluents discharged from nuclear power stations and associated nuclear fuel cycle facilities, providing essential dosimetric and environmental assessment data for personnel radiation protection programs in accordance with national and international radiation safety standards.
The instrument employs dual high-resolution Passivated Implanted Planar Silicon (PIPS) semiconductor detectors — a well-established technology in nuclear spectroscopy — to perform simultaneous alpha (α) and beta (β) particle energy spectrometry. This dual-detector architecture enables rigorous, physics-based discrimination between anthropogenic radionuclides and naturally occurring radioactive materials (NORM) through advanced energy spectrum analysis, satisfying the stringent measurement quality requirements of regulatory-grade environmental monitoring.
2. Analytical Features & Capabilities
Display & Interface: 7-inch capacitive touchscreen LCD with backlight illumination for intuitive real-time spectrometric data visualization and instrument parameter configuration.
Spectral Compensation Algorithm: Proprietary "peak-fitting" algorithm for dynamic radon (Rn-222) and thoron (Rn-220) spectral deconvolution and compensation. Eliminates measurement bias from naturally occurring radon progeny, ensuring accurate net artificial radionuclide activity quantification even in environments with elevated natural background.
I-131 Quantification: Independent Iodine-131 gaseous aerosol activity concentration determination via dedicated spectral region-of-interest analysis. Critical capability for reactor off-gas characterization, post-accident environmental pathway assessment, and thyroid dose evaluation per ICRP/IAEA methodology.
Artificial vs. Natural Discrimination: Energy spectrum analysis technology enabling definitive differentiation of anthropogenic radionuclides from naturally occurring airborne radioactivity (NORM). Reduces false positive alarm rates and improves measurement specificity for regulatory reporting.
Continuous Measurement: Simultaneous continuous air sampling and real-time radionuclide concentration measurement. Enables uninterrupted radiological surveillance without measurement dead-time.
Alarm System: Configurable alarm thresholds with automatic annunciation upon exceeding preset activity concentration action levels. Audible alarm combined with tri-color (green/yellow/red) visual indicator for graded response notification.
Deployment Flexibility: Dual deployment configuration — permanent fixed installation for stack/area monitoring programs, or rapid mobile field deployment for contamination zone characterization and emergency response surveys.
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Detector | 2 × High-resolution PIPS solid-state semiconductor detectors; effective area 450 mm² per detector |
| Measurement Type | Alpha (α) and Beta (β) particle radiation; output as aerosol activity concentration (Bq/m³) |
| Display | 7-inch capacitive touchscreen LCD with backlight |
| Detection Efficiency | α: ≥ 25%; β: ≥ 43% |
| Energy Response Range | α: 2 MeV – 10 MeV; β: 80 keV – 2.5 MeV |
| Aerosol Measurement Range | α: 0.01 Bq/m³ – 1 × 10⁶ Bq/m³; β: 1 Bq/m³ – 1 × 10⁶ Bq/m³ |
| I-131 Measurement Range | 1 × 10² Bq/m³ – 1 × 10⁶ Bq/m³ |
| Minimum Detectable Concentration | α: 0.08 Bq/m³; β: 1 Bq/m³ (1-min acquisition, γ background 0.1 μSv/h, Rn ≤ 40 Bq/m³); I-131: 1 × 10² Bq/m³ |
| Relative Intrinsic Error | ≤ ±20% |
| Communication Interface | RS-485 |
| Sampling Method | 50 mm dedicated snap-in cartridge filter assembly |
| Filter Media | High-efficiency particulate filter; efficiency > 99.99% for particles ≥ 4 μm |
| Flow Rate Range | 20 – 50 L/min |
| Maximum Flow Rate | > 50 L/min |
| Radon Compensation | Dynamic compensation via alpha spectral peak-fitting algorithm; gamma background compensation |
| Alarm System | Audible + tri-color (green/yellow/red) visual indicator |
| Continuous Sampling Duration | > 12 hours |
| Power Supply | AC 220 V |
| Power Consumption | ≤ 600 W |
| Operating Temperature | 0°C to +50°C |
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