Portable neutron survey meter - NSN3
Ref: NSN3
Retail price
depending on configuration
Discounts available on request
Request a quote
1 product
Showing the single result
In stock
Showing the single result
Retail price
depending on configuration
Discounts available on request
Request a quote
Made in France
Local service near you
Customer support every step of the way
Seamless technical communication
Radiation survey meter, also known as neutron survey meter, are essential measuring instruments. They are used for the rapid detection of contamination and for monitoring neutron radiation. These devices are used in a variety of situations: before field operations, when handling objects in a specific area, and for locating hot spots.
BrochureDownload the brochure and discover the NSN3 survey meter: a portable solution ideal for precise neutron detection in nuclear environments.
In accordance with ICRP* recommendations, radiation survey meters have several uses:
These instruments for neutron monitoring are essential before any intervention in the field, before handling objects in specific spaces, and when searching for hot spots.
This neutron dose rate probe complements operational dosimetry, which requires personal electronic dosimeters for worker protection and safety. *ICRP(International Commission on Radiation Protection)
The major innovation in FUJI Electric neutron probes is the use of an organic gas mixture of methane and nitrogen instead of 3He or BF3.
Fast neutrons are detected by the elastic diffusion reaction of hydrogen from methane.
Slow, thermal neutrons are detected using the 14N (n,p) 14C reaction of nitrogen. The proton energy in this reaction is 626 keV.
With these two reactions, measurement of the ambient neutron dose equivalent can be obtained from 0.025 eV up to 15 MeV.
This unique, patented technology, the fruit of Fuji Electric R&D, enables high sensitivity to be achieved with a minimum of moderator, in an ultra-light, easy-to-handle neutron detector.
To optimize safety and efficiency when working in a nuclear environment, the use of suitable equipment is essential. Thanks to its portability and low weight of just 3 kg, the NSN3 field radiameter is the ideal choice, greatly facilitating monitoring and radiation protection operations. Whether inside the reactor building during scheduled maintenance, or on irradiated fuel transport containers before they leave for reprocessing plants, this instrument is indispensable.
The NSN3 neutron survey meter is distinguished by its design, which favors adaptability in the field. It is compatible with both rechargeable and non-rechargeable batteries. This feature gives the equipment long autonomy: over 12 hours with the display activated. Without the display, its operating time extends to over 31 hours, and it can be plugged into the mains for continuous radiation monitoring.
With its modular display, the device allows data to be retrieved without removing it from its mounting, making the monitoring site easily accessible. This feature ensures that the operator remains in a safe area while performing essential measurements via a remote monitoring system. In line with the ALARA (As Low As Reasonably Achievable) principle, the NSN3 neutron radiometer provides maximum protection for personnel while ensuring the reliability and accuracy of the measured data.
This unit can be used in a variety of conditions, whether in portable or stationary mode. Save your data (up to 1,200 points) and transfer it to the removable display’s memory, or opt for continuous measurement and unlimited data logging using an external power supply.
Save time and simplify your decontamination procedures with the NSN3’s detachable display. Only this removable accessory needs to be decontaminated before leaving the controlled area.
The high radiation sensitivity of the portable radiation survey meter provides reliable, accurate measurements across the energy range from thermal neutrons (0.025 eV) to fast neutrons (15 MeV).
It features excellent gamma rejection.
These performances are comparable to those of a transportable neutron detection device (with heavy moderator).
The dose rate measurement range extends from 0.01 μSv/h to 99.99 mSv/hr with an accuracy of ≤ ±20% at 10 μSv/h.
The dose measurement range extends from 0.01 μSv to 99.99 mSv with an accuracy of ≤ ±20% at 1 μSv.
Trust your measurements: the NSN3 radiation meter is certified by the Technical Center for the Certification of Radiation Protection Instrumentation (CTHIR) in accordance with the IEC 61000-5:2014 standard.
The neutron dose rate sensor is equipped with a USB reader to display the collected data on a PC and share it.
The sales team is at your disposal to assist you with your projects.
Request a free quoteHave a question or need help? Our experts are here to assist you with fast and reliable solutions.
Ask for helpOur related articles
Discover the portable neutron radiameter, awarded a prize by the Japanese Atomic Energy Society for its cutting-edge radiology technology.
September 10, 2023
Learn how to apply the ALARA principle to reduce radiation exposure: minimize time, increase distance and use protective barriers.
December 4, 2022
Find out how radiation protection officers protect workers and the public from radiation: skills, responsibilities and legal compliance.
October 11, 2022