Overview
YD-900 Neutron Ambient Dose Equivalent (Rate) Meter adopts a highly sensitive ³He proportional tube as its detector. It offers outstanding neutron measurement sensitivity and superior gamma suppression performance, along with a compact form factor, light weight, intelligent functionality, and easy operation. The neutron detector can be configured as a portable neutron ambient dose equivalent rate meter and a stationary neutron radiation alarm monitor.
Features
- High-speed embedded microprocessor ensures real-time monitoring data and status updates.
- The neutron probe utilizes a ³He proportional counter, providing reliable and stable measurement data.
- An internal detector can be optionally equipped with a Geiger-Müller (G-M) tube for gamma radiation measurement.
- Color touchscreen LCD with both Chinese and English user interfaces, designed for an intuitive, easy-to-learn, and user-friendly experience.
- Dose rate alarm records can be manually reviewed; alarm thresholds are user-settable; storage capacity for up to 4,000 alarm data sets.
- Built-in real-time clock that displays the current year, month, and day; clock operation is unaffected by power loss.
Applications
This instrument is suitable for neutron radiation monitoring in a variety of settings, including environmental protection, chemical industry, petroleum, medical, import/export commodityinspection, accelerators, neutron sources, as well as other security screening, border control, and customs inspection scenarios where neutron radiation detection is required.
Specifications
| Parameter | Specification |
| Detector | ³He proportional counter (Optional: metal G-M tube) |
| Energy Response | Neutron: 0.025 eV – 16 MeV (³He detector) γ: 60 keV – 3 MeV (G-M detector) |
| Detectable Radiation | Neutron; (Optional: γdetector) |
| Measurement Range | Dose rate: 0.1 μSv/h – 100 mSv/h<br>Accumulated dose: 0 – 9999 mSv |
| Display | 3.5 Color touchscreen LCD |
| Sensitivity | >1.5 cps/(μSv/h) (³He detector) >2.0 cps/(μSv/h) (GM ) (relative to ¹³⁷Cs) |
| Relative Intrinsic Error | ≤±15% |
| Response Time | 1 s |
| Operating Environment | Temperature: -25 ℃ to +50 ℃ Relative humidity: ≤95% (at 40 ℃) |
| Power Supply | 8.4 V rechargeable lithium battery |
| Housing Material | Body: Aluminum alloy structure Moderator: Polyethylene sphere |
| Weight & Dimensions | Approx. 9.3 kg; 351 × 251 × 246 mm |