NSN3 Portable neutron survey meter

Product catalog summary

Overview: The NSN3 is a portable neutron survey meter designed for measuring ambient dose equivalent rates, primarily for worker protection in nuclear facilities, research centers, particle accelerators, and civil protection teams. It is lightweight, easy to handle, and does not use ³He or BF³, offering excellent gamma rejection and a wide measuring range.

Specifications:

Compliance: IEC61005(2003) and JIS 24341 (2006)
Radiation Measured: Neutron H*(10)
Detector: Proportional gas sensor
Measurement Range: Dose rate from 0.01 μSv/h to 99.99 mSv/h; Dose from 0.01 μSv to 99.99 mSv
Accuracy: ±20% at specified dose rates
Energy Range: 0.025 eV to 15 MeV
Energy Dependency: ICRP74 compliant
Angular Dependency: ≤ ± 25% (±90º from standard direction)
Linearity: ≤ ± 20% reference (10 μSv/h)
Gamma-ray Sensitivity: ± 1% of reading (10 mSv/h)
Display: 5-digit LCD for dose rate and accumulated dose
Communication: Via USB cable or software for dose rate, accumulated dose, history, and data configuration
Power Supply: 6 AA batteries or AC adapter (100 to 240 Vac)
Battery Life: Up to 30 hours without permanent display
Operating Conditions: Temperature -10°C to 45°C; Humidity 35 to 90% RH (non-condensing)
Dimensions: 289.5 (W) x 164 (D) x 246 (H) mm
Weight: Approx. 3 kg

Detection Principle: The NSN3 uses an innovative detection principle with an organic gas mixture of methane and nitrogen. Fast neutrons are detected through the elastic scattering reaction of hydrogen from methane, while slow, thermal neutrons are detected by the 14N (n,p) 14C reaction of nitrogen, with a proton energy of 626 keV.

Additional Information: Fuji Electric reserves the right to modify products without notice, provided modifications do not substantially alter specifications. Contact details and further information are available on their website.

Catalog excerpts

Portable Neutron Survey Meter Lightweight and easy to handle Excellent Gamma rejection Wide measuring range

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Specification The NSN3 neutron survey meter measures the ambient dose equivalent rate. It is intended for the protection of workers in nuclear facilities and throughout the fuel cycle, research centres, particle accelerators and civil protection first response 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 scattering reaction of hydrogen from methane. Slow, thermal neutrons are detected by the 14N (n,p) 14C reaction of nitrogen. The...

Open the catalog to page 2

NSN3 Portable neutron survey meter

NSN3 Portable neutron survey meter

Catalog excerpts

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