Overview
The YD-100A Electronic Personal Dosimeter employs a compensation-type GM counter tube as its detector, delivering high sensitivity, stable counting performance, and a wide measurement range for the accurate detection of X and γ radiation. The instrument is built around a high-speed microprocessor and features a 1.8-inch TFT colour LCD, complemented by silicone keypad buttons for straightforward operation.
Features
- High-speed embedded microprocessor ensures real-time processing of monitoring data and system status.
- 1.8-inch TFT colour LCD with a user-friendly interface for intuitive and efficient operation.
- Real-time 90-second dose rate measurement graph displayed on-screen.
- Automatic storage of up to 512 dose rate alarm records; data retained during power loss with manual alarm log review available.
- User-configurable alarm thresholds for both dose rate and cumulative dose.
- Dual alarm modes: vibration and audible alarm.
- Over-threshold alarm with short dead time and robust high-dose-rate performance.
- GM counter tube fault detection and alert function.
- Integrated real-time clock displaying year, month, and day; clock operation unaffected by power-off.
Applications
The instrument has been tested and verified by a calibration laboratory against its technical specifications. It is suitable for use across a wide range of radiation environment and radiological protection inspection scenarios, including household decoration radiation detection, medical facilities, disease control and prevention, environmental protection, metallurgy, petroleum, chemical processing, radiological laboratories, radiation processing, mining, and other settings where radiation monitoring is required.
Specifications
| Parameter | Specification |
|---|---|
| Detector | Metal GM counter |
| Energy response | 50 keV – 5 MeV, response variation ≤±20% |
| Detectable radiation types | X, γ, and hard beta radiation |
| Measurement range | Dose rate: 0.05 μSv/h – 50 mSv/h; Cumulative dose: 0 – 999.99 mSv |
| Display | 1.8-inch TFT colour LCD |
| Sensitivity | >1 CPS at 1 μSv/h |
| Relative intrinsic error | ≤±15% (¹³⁷Cs, 200 μSv/h) |
| Response time | ≤2 s |
| Operating environment | Temperature: –10°C to +50°C; relative humidity: ≤95% (at 40°C) |
| Power supply | 3.7 V / 1000 mAh rechargeable lithium battery; real-time battery voltage monitoring with low-battery alert |
| Enclosure | Plastic |
| Weight and dimensions | Approx. 150 g (including battery); 125 × 70 × 20 mm |
JJG 393-2018 and JJG 1009-2024 are national implementation standards based on ISO 4037 reference fields, corresponding respectively to IEC 60846 and IEC 61526 international frameworks.