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GUARDER

GUARDER

Personal radiation dosimeter DKG-24

  • Determining the direction toward the source of gamma radiation
  • Data transfer to a remote server via smartphone
  • Bluetooth 5 LE
  • Adaptive configuration (optional detectors of different sensitivity based on scintillator-silicon photomultiplier, GPS/GNSS, Bluetooth)
  • Highly sensitive and compact with durable body protection IP67
  • Meets the International Standards ANSI 42.32, ANSI 42.33
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    Description

    Personal radiation dosimeter DKG-24 “PRD GUARDER” belongs to spectrometric devices and is used to detect and localize radioactive and nuclear materials by their gamma radiation in order to prevent their illegal transfer. This device is also used at enterprises and institutions where personnel work with sources of gamma radiation.

    Purpose of Use

    • Measurement of ambient dose equivalent rate (DER) of gamma and x-ray radiation (DER of photon ionizing radiation)

    • Measurement of ambient dose equivalent (DE) of gamma and x-ray radiation

    • Determining gamma radiation intensity

    Features

    • Compact and lightweight with durable body protection IP67.

    • Graphic monochrome display with backlight.

    • Light, sound, vibration alarm.

    • Easy to operate with only 3 buttons (designed for use in protective gloves).

    • Powered by 2 galvanic cells / AA batteries or via USB cable.

    • Built-in GPS / GNSS receiver:

      – automatic data logging by time or distance

      – automatic time synchronization.

    • Built-in Bluetooth 5 LE – smartphone connection based on Android OS.

    • PC connection via USB.

    • Determining the direction toward the source of gamma radiation.

    • Remote software update is possible.

    • Wide range of available built-in detectors based on scintillator-silicon photomultiplier.

    Specifications

    General range of indication and DER measurements of gamma radiation:

    • – indication
    • – measurement by a high-sensitivity detector 9 cm3
    • – measurement by a low-sensitivity detector
    • µSv/h
    • 0,01 …107
    • 0,1 … 50
    • 50 … 107

     
    General range of indication and DE measurements of gamma radiation from a low-sensitivity detector: µSv 0.1 … 9.9·106
    Indication range of count rate of gamma radiation imp/s 1 … 5 000 000
    Main relative permissible error limit when measuring gamma radiation DER with a confidence probability of 0.95 (137Cs) % 15
    Main relative permissible error limit when measuring gamma radiation DE with a confidence probability of 0.95 (137Cs) % 15
    Energy range of registered gamma radiation MeV 0.02 … 10.0
    Energy dependence of the device’s readings when measuring gamma radiation DER in the energy range from 0.05 MeV to 1.25 MeV % ±25
    Anisotropy of the detectors at incidence of gamma quanta at angles from +60о to – 60о horizontally and vertically relative to the main measurement direction, marked by„+”:- for 137Cs і 60Co isotopes- for 241Am isotopes %
    • ±30
    • ±75
    Set-up time of the device operation when background radiation is not less than 0.1 μSv/h, not more min 1
    Calibration time by the level of gamma background s 10 … 90
    Response time to over 10 times change of gamma radiation DER s 0,25
    Operating supply voltage of the device from two:- lithium type FR6 or alkaline (Alkaline) type E91 elements (AA)- Nickel-metal hydride type HR6 batteries (AA)- from the USB port V 32.45
    Continuous operation of the device when powered under a background of gamma radiation no more than 0.5 μSv/h:· switched-off display backlight, with no alarm triggering and switched-off navigation receiver and Bluetooth, not less than

    • – for two new FR6 lithium batteries or two new Alkaline Energizer Max E91 batteries
    • – for two new, fully charged nickel-metal hydride batteries with a capacity of 2700 mAh

    · switched-off display backlight, with no alarm triggering and switched-on navigation receiver and Bluetooth, no less than:

    • – for two new FR6 lithium batteries or two new Alkaline Energizer Max E91 batteries
    • – for two new, fully charged nickel-metal hydride batteries with a capacity of 2700 mAh
    		 h 400

    300

     

     

     

    • 55
    • 40
    Operating temperature range °С -20 … +50
    Dimensions without case cover, no more than mm 60 × 110 × 30
    Weight without case cover, no more than kg 0,21

    Delivery Kit

    • Personal radiation dosimeter DKG-24 "PRD GUARDER"
    • Device case cover
    • USB cable
    • PC software
    • Key for battery compartment
    • Two AA batteries
    • Operating manual
    • Case or packing box
    erty