Intech Fast Neutron Alarm Dosimeter

N Dose Alarm (NDA120)

 

Features:
In facilities where employees work with neutron generators, linear accelerators or cyclotrons, CR39 passive Neutron dosimeters are used for personal monitoring. The Intech fast neutron alarm dosimeter (NDA 120) used in conjunction with CR39 dosimeter will provide instant readout and warning when the dose exceeds safe levels. The NDA120 uses a polyethylene converter and a p-type PIN photo diode to detect fast Neutrons in the energy range of 0.25 MeV to 15 MeV

Radiological
Measurement : Hp (10) individual dose eq. and dose rate eq.
Radiation detected : X and γ radiation
Display Units : Direct readout of dose equivalent  Hp(10) in Sv
Range Dose : 1μSv to >1Sv auto ranging; 10Sv overload
Dose rate : 0.1mSv/h to 1Sv/h, auto ranging (10Sv/h overload)
Alarms : Dose and dose rate alarms
: continuously settable over the entire range
: 80 dB buzzer – intermittent long beeps for dose alarm
: intermittent short beeps for dose rate alarm
Energy response (BARC Tested) : Type A :±25%  from 50keV to 7MeV (ref. 137Cs)
Angular response (BARC Tested) : ±15% up to ±60° for 137Cs
Accuracy : Hp(10) 137Cs ±10%
Dose rate linearity (BARC Tested) : ±20%  upto 1Sv/h
Overload ( (BARC Tested) : up to 10 Sv
Memory
Memory Type : EEPROM, 10 years retention
Dose profile history : Fixed, 30 mts intervals
No. of records : 24
Electrical and Mechanical
Power supply : single Li Coin CR2477 battery
Battery Life : Over 4000 hrs of continuous operation
  (non – alarming) – about 6 months.
: Over 2 years with 8 Hrs of use per day / 5 days a week
Communications : Direct USB or  IR wireless (optional) with Reader
Display and function : Control by a single button; On/Off, dose / dose rate
  display, mute.
Size : Pen type enclosure 30mm x 130mm x 15mm with
  Silicone sleeve
Weight : <70 gm including battery and clip
Case material : high impact ABS
Environmental
Operating temperature : -10 °C to 50 °C
Humidity : 20% to 90% RH, non-condensing
Vibration & shock resistant : Yes
Drop resistant : 1.5m drop on each surface onto concrete
EMC                                       : Exceeds IEC / ANSI requirements;
immune to cell phones in close proximity