FJ-500 Online Continuous Radiation Monitoring System X γ α β Ray Detector 0.01μSv/h-1Sv/h Real-time Radiation Dose Rate Monitor
FJ-500 Online Continuous Radiation Monitoring System X γ α β Ray Detector 0.01μSv/h-1Sv/h Real-time Radiation Dose Rate Monitor
FJ-500 online continuous radiation monitoring system is a device used for continuous monitoring of the regional gamma dose rate in radioactive areas, such as pedestrian passages, operation areas, and some equipment rooms within the control zone of nuclear power plants.
FJ-500 online continuous radiation monitoring system adopts an integrated structure design of the host and probe, with built-in high and low range GM counters and an audible and visual alarm module. It can be used for regional dose rate monitoring in the environment. At the same time, it can be externally connected with multiple fixed gamma probes through the RS485 interface to meet the requirements of simultaneous monitoring and measurement in different areas; and it can be connected to the upper computer to achieve synchronous real-time display and control of data at the industrial control end. The instrument complies with the standard JJG 393-2018 "Portable χ, γ Radiation Surrounding Dose Equivalent (Rate) Meter and Monitoring Instrument".
The system can set two levels of alarm thresholds. When the gamma dose rate in the measured area exceeds the set alarm threshold, the host will simultaneously issue an audible and visual alarm signal (the alarm sound can be turned on or off by operation) to alert the on-site staff.
| Type of detected radiation | X, γ, α, β rays |
| Built-in detector in the host | dual GM counters |
| Energy range | 20 keV to 3MeV |
| Reference energy | 137Cs, 662keV |
| Measurement range | 0.01μSv/h to 1Sv/h |
| Response time | 1s |
| Basic error |
≤±15% (for 137Cs, 662keV) |
| Host size | 260mm×250mm×190mm (length×width×height) |
| Display unit |
Sv/h, mSv/h, Sv/h (the instrument automatically switches units) |
| Power supply voltage | 220V/50Hz |
There are two RS485 interfaces, one for connecting multiple probes externally and the other for connecting to a computer
Provide DC24V working voltage for the probes
When exceeding the preset alarm value or going beyond the measurement range, the alarm light emits sound and light alarm
Has alarm switch output for interlock devices
External probe:
Types of detected radiation: X, γ;
Detector type: GM tube;
Energy range: 20 keV to 3MeV;
Reference energy: 137Cs, 662keV;
Measurement range: 0.01μSv/h to 9.99Sv/h;
Response time: 1s;
Basic error: ≤±15% (137Cs, 662keV);
Transmission distance: >500m (from probe to host);
Probe weight: 430g;
Power supply voltage: DC24V;
Operating temperature: -20℃ to 50℃
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.