The Lujun LJRD-2401 Portable Nuclear Radiation Detector is a compact handheld instrument designed for fast monitoring of X-ray, beta and gamma radiation. It begins measuring immediately after power-on without requiring a lengthy preheating process, making it practical for routine radiation surveys, workplace inspections and personal safety monitoring. Lujun lists the LJRD-2401 as a portable Geiger-counter radiation detector using a Geiger tube sensor.
The detector features a clear HD LCD screen that displays the current radiation dose rate, accumulated dose, time and remaining battery power. Simple physical buttons make the instrument easy to operate in the field, while Chinese and English language switching supports different users.
For safety, the LJRD-2401 provides a three-way alarm system with sound, light and vibration. When radiation exceeds the configured safety threshold, the detector immediately warns the user through multiple alarm methods, helping ensure that elevated radiation levels are noticed quickly.
The detector measures dose rates from 0.00 to 10000 μSv/h or 10 mSv/h, while cumulative dose measurement extends from 0.00 μSv to 500.0 mSv. These specifications make the instrument suitable for general radiation monitoring and survey applications.
A built-in 2800 mAh rechargeable lithium-ion battery provides up to approximately 18 hours of continuous operation according to the supplied product sheet, with charging completed within four hours. The compact handheld housing makes it convenient for technicians, inspectors and safety personnel who need portable radiation monitoring.
Features
- Immediate Measurement: Starts radiation monitoring directly after power-on.
- X Beta Gamma Detection: Designed to monitor X-ray, beta and gamma radiation.
- Geiger Counter Sensor: Uses a Geiger tube for radiation detection.
- Triple Alarm System: Sound, light and vibration warnings when limits are exceeded.
- Clear LCD Display: Shows radiation value, time and battery level in real time.
- Wide Dose Rate Range: Measures from 0.00 to 10000 μSv/h.
- Cumulative Dose Monitoring: Measures accumulated exposure up to 500.0 mSv.
- Multiple Acquisition Modes: Supports different measurement modes for field use.
- 2800 mAh Battery: Rechargeable lithium-ion battery for portable operation.
- Fast Charging: Charging time of up to four hours.
- Bilingual Interface: Supports Chinese and English switching.
- Physical Buttons: Three-button layout for straightforward operation.
- Portable Design: Compact handheld body suitable for mobile radiation surveys.
Specifications
| Specification |
Details |
| Brand |
Lujun |
| Model |
LJRD-2401 |
| Product Type |
Portable Nuclear Radiation Detector |
| Detector Type |
Geiger Counter |
| Sensor |
Geiger Tube |
| Radiation Types |
X Ray Beta Gamma |
| Dose Rate Range |
0.00 to 10000 μSv/h |
| Maximum Dose Rate |
10 mSv/h |
| Cumulative Dose Range |
0.00 μSv to 500.0 mSv |
| Display |
HD LCD |
| Alarm Type |
Sound Light Vibration |
| Battery |
Rechargeable Lithium Ion |
| Battery Capacity |
2800 mAh |
| Battery Voltage |
3.7 V |
| Continuous Working Time |
Approx. 18 Hours according to supplied product sheet |
| Charging Time |
≤4 Hours |
| Interface Languages |
Chinese English |
| Control |
3 Physical Buttons |
| Measurement Start |
Immediate After Power On |
