Portable neutron survey meter NSN3 FUJI ELECTRIC
Neutron radiation measurement
Fields of application
It is designed to protect workers in nuclear facilities and throughout the fuel cycle, research centers, particle accelerators and civil protection first responders.
research centers, particle gas pedals and civil protection first-responder teams.
Key Features :
- Lightweight and ultra-handy
- Without ³He or BF3
- Excellent Gamma rejection
- Extended measuring range
The NSN3 neutron survey meter measures the ambient dose equivalent rate. It is designed to protect workers in nuclear facilities and throughout the fuel cycle, research centers, particle gas pedals and civil protection first-responder teams. The innovative detection principle of the NSN3 gas counter consists of an organic gas mixture of methane and nitrogen (neutrons are measured by this gas mixture). Fast neutrons are detected by the elastic diffusion reaction of hydrogen from methane. Slow, thermal neutrons are detected by the 14N (n,p) 14C reaction of nitrogen. The proton energy in this reaction is 626 keV.
| Standard | Compliant with IEC61005(2003) and JIS 24341 (2006) standards | |
| Measured radiation | Neutron H*(10) | |
| Detector | Proportional gas detector | |
| Measuring range | Dose rate | 0.01 μSv/h to 99.99 mSv/h |
| Dose | 0.01 μSv to 99.99 mSv | |
| Accuracy | Dose rate | s ±20% at 10 μSv/h |
| Dose | s ±20% at 1 μSv/h | |
| Energy range | 0.025 eV to 15 MeV | |
| Energy dependence | ICRP74 compliant (H*(10) response curve) | |
| Angular dependence | ≤ ± 25% (±90º from standard direction) | |
| Linearity | ≤ ± 20% reference (10 μSv/h) | |
| Gamma-ray sensitivity | ≤ ± 1% reading (10 mSv/h) | |
| Display | 5-digit LCD display (dose rate, accumulated dose) | |
| Connectivity | Dose rate, accumulated dose, history, data configuration. (USB cable or software) |
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| Data backup | Number of recordings | Up to 1200 |
| Backup frequency | 10, 20, 30, 60, 120, 300 or 600 seconds (selectable) | |
| Power supply | Primary or secondary battery (6 AA cells) AC adapter (100 to 240 Vac) |
|
| Battery life | Up to 30 hours (without permanent display) | |
| Operating temperature | -10°C to 45°C | |
| Operating humidity | 35 to 90% RH (non-condensing) | |
| Dimensions | 289.5 (W) x 164 (D) x 246 (H) mm | |
| Weight | Approx. 3 kg | |
