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8.1
General Specification
Model
: NRF50
Detector
: Silicon semi-conductor
: γ(X) rays (30 keV to 7.0 MeV)
Radiation type
Dose display range: 0.1 mrem to 1000 rem, 0.1 mrem/h to 1000 rem/h
Effective measurement range: 2.0 mrem to 1000 rem, 0.05 mrem/h to 1000 rem/h (accumulated dose)
Rated range
: Gmha (category for IEC61526)
60 keV to 6 MeV, 10.0 mrem to 1000 rem, 0.05 mrem/h to 1000 rem/h
Indication error
: Within ±10 % (Cs-137, 2.0 mrem to 1000 rem)
Within ±30 % (Cs-137, 10.0 mrem/h to 100.0 mrem/h)
Within ±20 % (Cs-137, 100.0 mrem/h to 1000 rem/h)
Energy characteristic
Direction characteristic
Energy and direction response: Relative response 0.71 to 1.67 (60 keV to 6 MeV, 0° to 60°)
Temperature characteristic: -13 % to +18 % (20 °C, -10°C to +40°C)
Temperature test result
Left for 4 hours in each temperatures. Evaluated by amount of change in the last 30 minutes.
Dimensions
: approx. 105 mm(H) × 60 mm(W) × 29/18 mm(D) (excluding protrusion)
Weight
: approx. 170 g (2 Batteries), approx. 100 g (Battery excluded)
Battery
: AA alkaline battery ( x 2 )
Continuous operating time: more than 2500 hours (under normal temperature, no alarms, new battery)
Reference standards: IEC61526 Ed3.0(2010), ANSI N42.20(2003)
USB interface
: USB2.0, micro-B（Use with power supply and communication）*NRF5 does not have a
function to charge batteries.
Recommended USB cable・・・CW-117MC（Core wave）or equivalent
* It may not work when use except for recommended USB cable
8.
Specification
10.0 mrem/h to 1000 rem/h (dose rate)
: Within ±20 %（Cs-137, 50 keV ～ 6 MeV）
: Within ±20 %（Cs-137, Vert. and horz. to ±75°）
Within ±50 %（Am-241, Vert. and horz. to ±75°）
TN5A2293a
34/42
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