Smart Environmental Radon Monitor
- Product Number:LD-CD2
- Product Difference:7-inch touchscreen display, utilizing the pump-suction electrostatic collection alpha spectrometry method
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Online ConsultationProduct Introduction
The environmental radon detector is suitable for measuring radon volume activity in ambient air, soil, and water, as well as surface radon emission rates in soil and building materials. It can be used for environmental monitoring, geological prospecting, radiation protection, nuclear accident monitoring, radiation dose assessment, earthquake prediction, and educational purposes.
This instrument is based on the high-voltage electrostatic adsorption alpha spectrometry method. A gas pump draws radon-containing gas into the electrostatic collection chamber. When radon undergoes alpha decay, the radon atom transforms into a positively charged polonium atom (ion), which moves toward the detector surface under the influence of a high-voltage electric field and is adsorbed onto the detector. Subsequently, the polonium atoms on the surface undergo alpha decay; the excitation caused by the alpha particles generates an electrical current signal (electrical pulse signal) on the detector surface. This electrical pulse signal passes through the instrument’s multichannel pulse counter, which determines the number and energy of the alpha particles produced, thereby indirectly calculating the concentration of radon in the air.
Product Features
Uses the pump-suction type electrostatic collection α-spectrometry method.
The detector is a gold-silicon surface-barrier semiconductor detector.
The α-spectrum has good resolution and displays 256-channel spectra in real time.
Industrial-grade 7.0-inch touchscreen with a resolution of 800×480 and adjustable brightness.
Short measurement cycles and fast recovery allow for rapid response to changes in radon concentration.
Built-in high-precision temperature and humidity sensors provide automatic temperature and humidity compensation.
Built-in printer for fast, real-time printing of measurement results.
Built-in storage supports saving 4,096 sets of measurement and energy spectrum data.
Integrated USB port supports exporting measurement data to Excel spreadsheets.
Built-in lithium-ion battery with low power consumption and long battery life.
The display features a powerful user interface and a wide range of functions.
Product parameters
| Display | 7-inch system touchscreen, 800×480 HD resolution, supports battery level display |
| Language | Chinese |
| Detection Targets | Rn222 (radon) and Rn220 (thorium) |
| Detection Functions | Air radon concentration, soil radon concentration, radon concentration in water, radon exhalation rate measurement |
| Measurement Method | Active pumping with electrostatic collection |
| Detector | Gold-silicon barrier-type semiconductor detector |
| Temperature | Accuracy ±0.3°C; Automatic temperature and humidity compensation |
| Humidity | Accuracy: ±3% RH |
| Sensitivity | Sniffing Mode ≈ 0.4 CPM/1 pCi/L; (at 20°C and 10% RH); Standard Mode ≈ 0.9 CPM/1 pCi/L; (at 20°C and 10% RH); |
| Repeatability | no greater than 5% (24 hours, once per hour, 1000 Bq/m³) |
| Volume activity response | Annual deviation does not exceed ±10% |
| Lower detection limit | 2 Bq/m³ (120 min, 2σ), 4 Bq/m³ (60 min, 2σ) |
| Measurement range | Air radon: 2–1,000,000 Bq/m³ Soil radon: 2–1,000,000 Bq/m³ Radon in water: 0.002–1,000.000 Bq/L Exhalation rate: 0.001–999.999 Bq/[m²•s] Radon daughter product potential: 655.35–0.01 nJ/m³ |
| Communication Interface | USB communication interface |
| Printing | Built-in printer; supports Bluetooth printing |
| Battery Life | 3.7 V/36 Ah rechargeable lithium-ion battery, standby power consumption no greater than 1.2 W |
| Environmental Conditions | -10°C to 50°C, relative humidity ≤ 90% |
| Weight | Main unit approximately 5 kg, and the complete set of accessories in the box weighs approximately 5 kg |
| Main Unit Dimensions | 398 × 314 × 225 mm |
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