Radiation Meter Neutron Measurement Dose Equivalent Rate
Measurement Dose Equivalent Measurement FJ31-7103GN
I. Product introduction
FJ31-7103GN is a multifunctional radiometric instrument with high
sensitivity for rapid detection of gamma and neutron (selected) in
unknown radioactive environment. It is the first choice alarm
instrument used by environmental monitoring, homeland security,
border ports, commodity inspection, customs, airport, fire control,
emergency rescue, chemical defense force and other departments for
routine survey and search for weak radioactive sources. This
instrument can not only carry on all-weather monitoring and
measurement alarm to radiation environment dose rate and dose, but
also has powerful wireless transmission and integrated management
function of background software.
2. Main features
• High sensitivity cesium iodide scintillation crystal and lithium
fluoride detector
•Compact design and measurement of multiple gamma rays: rapid alarm
for chi-square and gamma rays in 2 seconds, and neutron ray alarm
in 2 seconds
• double-button operation with OLED LCD, easy to operate and
flexible to set up
• Strong and explosion-proof, suitable for any harsh environment:
IP65 protection grade
• vibration, sound and light alarm for complex environment
• Support bluetooth wireless communication: real-time data, alarm
transmission and historical record download, facilitating system
integration
• green and low energy consumption: two no.5 civilian alkaline
batteries can be used continuously for 200 hours
3. Instrument functions
The dosimeter can achieve the following functions:
Measured dose equivalent rate;
Measured dose equivalent;
The alarm value of dose equivalent rate can be set;
The dose equivalent alarm value can be set;
Communication switch and sound switch can be set;
Work parameters can be viewed through the function key;
With the function of self-check, the fault can be identified and
suggested, such as detector fall off, low voltage and so on.
Optional Bluetooth data reading system for historical data reading.
4. Performance indicators
| Detector | Cesium iodide and lithium fluoride |
| Energy response | 50kev~3MeV |
| Dose rate range | 0.01μSv/h~5mSv/h |
| Relative error | <±20%(Cs-137) |
| Dose equivalent range | 0.01 Sv ~ 9.99SV(X/γ) |
| Dose equivalent rate range | 0.01 Sv/h ~ 9.99SV /h |
| Dose error | less than 10% |
| Dose equivalent error | ≤10% within the measurement range |
| Neutron range | 0.01 CPS ~ 99999CPS |
| Neutron sensitivity | 0.5 CPS /1 Sv/h |
| Calibration accuracy | ±5% (for CS-137 radioactive sources) |
| Dose rate alarm | continuously adjustable in the range of 0.01 Sv/ h-9.99SV /h |
| Response time | 5S |
| Working environment | temperature:-30℃~+50℃ humidity:<95%R.H(Non - Condensing) |
| Storage temperature | -40℃ ~ +70℃ |
| Protection level | IP65 |
| Communication | Data can be downloaded through Bluetooth 9600BPS/USB communication
interface for data management and networking |
| Power types | 3.7V lithium-ion rechargeable battery (with charger), working time:
more than 200h under background measurement. |
| Overall dimensions | 115×58×45mm |
| Weight | About 270g |
5. Standard delivery
Main unit
Battery charger
USB cable
Carrying case
Manual
Calibration certificate
