FJ-3028 Portable Neutron Dose Rate Meter Spherical Polyethylene Moderator Neutron Radiation Monitor
Product Introduction
This neutron dose rate meter is an intelligent radiation measurement instrument. It adopts an intelligent probe and can be used by simply connecting to a multifunctional radiation measurement host. This instrument enriches the series of intelligent probes and expands the application scope of multifunctional radiation measurement instruments. The product has achieved serialization based on a unified inspection system software platform and one multifunctional radiation measurement instrument. Customers can meet various usage requirements by selecting different probes. This probe uses a 3He proportional counter tube combined with a polyethylene moderator to measure neutron dose rate.
This product is widely used for the detection of neutron dose rate in places such as nuclear power plants, nuclear power devices, research nuclear reactors, accelerators, and neutron sources. It can also be used in various environmental protection bureaus, disease control centers, and petroleum logging, etc.
Technical indicators
| Detector |
3He proportional counter + polyethylene moderator (spherical) |
| Sensor pressure |
8 times atmospheric pressure |
| Measurement type |
Neutron |
| Display screen |
3.2-inch color LCD, resolution 320×240, with backlight
|
| Sensitivity |
2.83 CPS/(μSv/h), 252Cf source |
| Real-time dose equivalent rate |
0.01 μSv/h ~ 99.99 mSv/h |
| Cumulative dose |
0.01 μSv ~ 9999 mSv |
| Energy range |
0.025 eV ~ 15 MeV |
| Relative inherent error |
≤ ±10% |
| Repeatability |
≤ 1% |
| Detection efficiency for thermal neutrons |
approximately 90% |
| γ suppression ratio |
≥ 100:1 (10 mSv/h, 137Cs) |
| Radiation tolerance |
The instrument can operate normally within a cumulative dose of 300 Sv
|
| Alarm method |
Sound and light alarm |
| Alarm threshold |
Adjustable continuously within the measurement range |
| Alarm categorie |
Threshold, overload, fault, battery under-voltage |
| Display units |
nSv/h, nGy/h, μGy/h, μSv/h, CPS, CPM |
| Data storage |
Can store 20,000 sets of data |
| Angular response |
Excellent spherical geometric structure and the relative position of the counter tube make the instrument's 4π angular response deviation less than ±10% |
| Corrosion resistance |
Can resist weak acids, weak alkalis and salt solutions; insoluble in most solvents below 60°C |
| Communication interface |
Computer interface: USB 2.0, host and probe: RS-485/Bluetooth (optional) |
| Power supply |
The entire machine is powered by the host, and the host has a built-in rechargeable lithium battery |
| Power consumption |
The entire machine's power consumption is ≤ 200 mW (excluding the backlight power consumption) |
| Working time |
When used together with the host, it can continuously work for more than 24 hours without the alarm and backlight being turned on |
Environmental characteristics
❐ Operating temperature: -41℃ ~ +50℃ Complies with GJB 150.3A-2009 and GJB 150.4A-2009 high/low temperature test requirements
❐ Storage temperature: -41℃ ~ +50℃ Complies with GJB 150.3A-2009 and GJB 150.4A-2009 high/low temperature test requirements
❐ Relative humidity: ≤90% (35℃) Complies with GJB 150.9A-2009 alternating humid heat test requirements
❐ Electromagnetic compatibility: Complies with the requirements and measurements of GJB 151B-2013 "Military Equipment and Subsystems Electromagnetic Emission and Sensitivity Requirements and Measurements" for RE102, RS103, CS112, and RS101
❐ Rain spray: Complies with GJB 150.8A-2009 rain spray test requirements
❐ Vibration: Complies with GJB 150.16A-2009 vibration test requirements
❐ Shock: Complies with GJB 150.18A-2009 shock test requirements
❐ Protection level: IP65
Mechanical characteristics
❐ Moderator material: Low-density polyethylene
❐ Moderator density: 0.95 g/cm³
❐ Dimensions: Φ210×360mm (probe), 170×80×30mm (main unit)
❐ Weight: 9.5 kg (complete machine)
Functional Features
❐ This instrument adopts a highly sensitive imported detector, with fast response speed. It is easy to use;
❐ High sensitivity, excellent gamma resistance performance, and good energy response characteristics;
❐ It can be used as both a portable instrument and a fixed neutron dose monitoring instrument. It can be externally connected with various professional radiation measurement probes, and can be linked with the upper computer for coordinated analysis by the analysis software for professional analysis;
❐ Independent gamma and neutron measurement channels and alarm indication;
❐ The alarm threshold can be continuously adjusted, and audible and visual alarm indications are provided.
Application fields
❐ Radiation protection for nuclear facilities, nuclear regulatory bodies and "radiation-related" enterprises and institutions;
❐ Neutron detection in oil exploration;
❐ Prospecting operations;
❐ Environmental monitoring departments performing official duties, emergency response by disease control and health departments;
❐ Security precautions for large-scale events, embassies and consulates abroad;
❐ Nuclear and radiation counter-terrorism in inspection and quarantine, customs, ports, border control, preventing the transportation of illegal radioactive substances and radioactive terrorist attacks, etc.;
❐ Third-party testing institutions.
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