RD-301 Gamma (γ), X-ray Dosimeter

Product Introduction

The RD-301 X/γ Dosimeter is a portable radiation detection instrument designed for measuring X-rays and gamma rays. Utilizing a GM counter tube as its detector, it offers a rapid response speed. It is widely applicable to radiation protection monitoring in fields such as industrial flaw detection, environmental monitoring, public health and epidemic prevention, import/export inspection, medical radiology, construction materials, petrochemicals, geological surveys, scrap metal processing, and nuclear laboratories; it is also utilized for radioactive security screening at airports, railway stations, and seaports.

Compliant Standard: GB18871-2002 — *Basic Standards for Protection Against Ionizing Radiation and for the Safety of Radiation Sources*.

Functional Features

• High-speed, ultra-low-power microprocessor unit;
• Digital display of accumulated dose and dose equivalent rate;
• English menu-driven user interface;
• Alarm log query: Built-in data storage for dose and dose rate readings, accessible at any time and retained even in the event of a power failure; customizable alarm thresholds for dose and dose rate;
• Real-time battery level display and low-voltage alarm functions.

Main Technical Parameters

• Detector: GM Tube
• Measurement Type: X-ray, Gamma-ray
• Display: 3.2-inch Color LCD (320×240 resolution) with Backlight
• Sensitivity: 8000 cpm/mR/h
• Energy Range: 48 keV – 3 MeV
• Energy Response: ≤ ±30%
• Dose Equivalent Rate Range: 0.1 μSv/h – 100 mSv/h
• Accumulated Dose Range: 0.01 μSv – 9.99 Sv
• Relative Intrinsic Error: ≤ ±15% (with ¹³⁷Cs)
• Repeatability: ≤ 5%
• Display Units: nSv/h, nGy/h, μSv/h, μGy/h, cps, etc.
• Alarm Modes: Audible and Visual Alarms
• Alarm Categories: Threshold, Overload, Fault, Low Battery Voltage
• Alarm Thresholds: Continuously adjustable within the measurement range
• Data Storage: Stores up to 20,000 data records
• Power Supply: Built-in Rechargeable Lithium Battery
• Power Consumption: ≤ 200 mW (excluding power consumed by display backlight)
• Operating Time: > 24 hours of continuous operation (with buzzer and backlight disabled)
• Operating Temperature: -30°C to +50°C
• Storage Temperature: -40°C to +55°C
• Relative Humidity: ≤95% (at 35°C, non-condensing)
• Protection Class: IP65
• Dimensions: 290 × 120 × 175 mm
• Weight: 1.2 kg