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Neutron Instruments

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DINEUTRON - Portable Unit for Neutron Dosimetry

DINEUTRON - Portable Unit for Neutron Dosimetry

Description

The DINEUTRON is a portable device for measuring neutron dose equivalent rates and integrated dose equivalents.

The unit is based on an innovative dual-sphere concept developed by the CEA (French Atomic Energy Commission); this concept confers an excellent performance for a very reduced weight: 3.5 kg only. The device comes in a self-contained case including two 3He detectors with different diameter moderating spheres, the charge amplifiers, the processing circuits and power supply. A keypad allows to easily select the type of measurement and measurement unit. An alphanumeric backlit LCD display shows the equivalent dose rate, the integrated equivalent dose, the selected unit, the statistical accuracy, the quality factor, and the time of exposure when applicable.

Particular care has been taken in its design to the ergonomy (handle and balancing) to ensure a great ease of use and comfortable handling.

The DINEUTRON is the favored device for neutron ambient measurements in the scope of health physics and particularly in nuclear power plants, reactors and reprocessing facilities.

DINEUTRON - Portable Unit for Neutron Dosimetry

Features

  • Very light (3.5 kg) dual sphere device
  • Excellent ICRP21 curve fitting from 0.025 eV to 15 MeV
  • Measurement ranges: 0.25 mrem/h to 9999 mrem/h 0.0001 mrem to 9999 mrem
  • Measurement resolution: 0.1 mrem/h (0.001 mSv/h)
  • Large choice of units: Sv, Gy, rem, rad
  • Displays quality factor and accuracy
  • Meets IEC 1005 standard; CTHIR N°026 qualification
PNM-200/R - Portable Unit for Neutron Dosimetry

PNM-200/R - Portable Unit for Neutron Dosimetry

Description

PNM-200 is the lightest portable neutron survey meter based on polyethylene sphere in the market. It measures both the neutron dose equivalent since the instrument was last powered on and the neutron dose rate equivalent.

PNM-200 comes in a compact housing that features an ergonomic handle. It is self contained, needing no external device or connection to operate.

PNM-200 is largely used in Nuclear Power Plants, fuel processing and spent fuel reprocessing plants, and accelerator facilities. It represents the right solution for transportation shield leakage measurements and for all measurements that must be performed in contact.

PNM-200 is the instrument of choice when gamma background may impact the final neutron measurement taking its good gamma rejection into account (>1000:1).

The backlight (selectable via the power switch) makes the LCD display easy to read even in dark areas.

A rotary switch gives access to the following data:

  • Internal test procedure
  • Integration time (since powered on)
  • Integrated dose equivalent
  • Dose-rate equivalent

PNM-200/R - Portable Unit for Neutron Dosimetry

Features

  • Light monosphere unit 6.4 kg (14 lb)
  • Excellent gamma rejection (>1000)
  • Automatic switching measurement ranges:
    • 0.2 mrem/h to 20 rem/h
    • 0.2 mrem to 20 rem
  • ICRP curve fitting from 2 keV to 15 MeV
  • Conforms to the CEI 1005 standard
  • CEA (French Atomic Energy Commission) system
PNM-200/S - Portable Unit for Neutron Dosimetry

PNM-200/S - Portable Unit for Neutron Dosimetry

Description

PNM-200 is the lightest portable neutron survey meter based on polyethylene sphere in the market. It measures both the neutron dose equivalent since the instrument was last powered on and the neutron dose rate equivalent.

PNM-200 comes in a compact housing that features an ergonomic handle. It is self contained, needing no external device or connection to operate.

PNM-200 is largely used in Nuclear Power Plants, fuel processing and spent fuel reprocessing plants, and accelerator facilities. It represents the right solution for transportation shield leakage measurements and for all measurements that must be performed in contact.

PNM-200 is the instrument of choice when gamma background may impact the final neutron measurement taking its good gamma rejection into account (>1000:1).

The backlight (selectable via the power switch) makes the LCD display easy to read even in dark areas.

A rotary switch gives access to the following data:

  • Internal test procedure
  • Integration time (since powered on)
  • Integrated dose equivalent
  • Dose-rate equivalent

PNM-200/S - Portable Unit for Neutron Dosimetry

Features

  • Light monosphere unit 6.4 kg (14 lb)
  • Excellent gamma rejection (>1000)
  • Automatic switching measurement ranges:
    • 2 µSv/h to 200 mSv/h
    • 2 µSv to 200 mSv
  • ICRP curve fitting from 2 keV to 15 MeV
  • Conforms to the CEI 1005 standard
  • CEA (French Atomic Energy Commission) system