Overview
The YD-510 Environmental X-γ Survey Meter combines a large-volume 3 × 3 inch plastic scintillator with a secondary GM detector in a single instrument. This dual-detector architecture enables both high-sensitivity environmental monitoring and extended-range protection-grade measurement without switching devices. The scintillator responds to fast X-ray exposure pulses, while the wide dynamic range spans from low background levels to high dose rates. A 3.5-inch colour touchscreen provides a bilingual operator interface for real-time data visualisation, alarm management, and threshold configuration. Onboard memory stores up to 4,000 alarm records with power-loss protection. The instrument complies with JJG 521-2006 requirements and is deployed across environmental monitoring, medical facilities, NDT radiography, and radiological laboratories where a single device covering both environmental and protection-grade applications is required.
FEATURES
- High-speed embedded microprocessor is employed; a large-volume plastic scintillator (3 × 3 inch) serves as the core sensor.
- Fast X-ray exposure pulses are detectable.
- 3.5-inch colour touchscreen LCD with a bilingual operator interface, designed for rapid familiarisation and straightforward operation.
- Cumulative dose is automatically saved and retained during power loss; alarm records are accessible for manual review.
- Alarm thresholds for dose rate and cumulative dose are independently configurable.
- Storage capacity of 4000 alarm data records.
- Over-threshold audible alarm with short dead time ensures robust performance under high-dose-rate conditions.
- Integrated real-time clock displays year, month, and day; clock operation is unaffected by power interruption.
Applications
- Environmental monitoring and regulatory compliance
- Nuclear medicine departments and hospitals
- Industrial non-destructive testing (NDT) and radiography
- Radiological laboratories and research facilities
- Radiation processing and sterilization
- Mining and geological surveying
- Metallurgy and petrochemical processing
- Disease control and public health agencies
Specifications
| Parameter | Specification |
|---|---|
| Detector | 3 × 3 inch plastic scintillator + metal GM counter |
| Energy response | 20 keV – 7 MeV (plastic scintillator detector); 60 keV – 3 MeV (GM counter) |
| Detectable radiation types | X, γ |
| Measurement range | Dose rate: 10 nSv/h – 100 mSv/h (optional: 10 nSv/h – 5 Sv/h); Cumulative dose: 0 – 9999 mSv |
| Display | 3.5-inch colour touchscreen LCD |
| Sensitivity | >2000 cps/(μSv/h) (scintillator detector); >2.0 cps/(μSv/h) (GM counter) (¹³⁷Cs) |
| Relative intrinsic error | ≤±10% (scintillator)(¹³⁷Cs, 100 μSv/h);≤15%（GM） |
| Response time | 5 ms |
| Operating environment | Temperature: –25°C to +50°C; relative humidity: ≤95% (at 40°C) |
| Power supply | 7.4 V rechargeable lithium battery; real-time battery voltage monitoring with low-battery icon flashing alert |
| Enclosure | Fully aluminium alloy construction; robust and durable |
| Weight and dimensions | Approx. 4 kg (excluding battery); Main unit: 80 × 120 × 40 mm; Detector probe: φ80 × 335 mm (excluding mounting bracket) |