Personal Gamma Radiation Dosimeter

DKG-21 EcotestCARD

EcotestCARD is a direct reading personal dosimeter for personnel exposure monitoring.

Features

  • Storage of dose accumulation history in the non-volatile memory with real-time reference
  • Transfer of dose accumulation history through the infrared port to the computer
  • Blocking the mode of power supply switch off until the data reading procedure finished
  • Gamma and X-ray radiation DER and DE threshold levels programming with the help of the computer or manually with control keys
  • Blocking certain indication modes in response to the computer command
  • Light and audio alarms when programmed threshold levels exceeded on DER and DE of gamma and X-ray radiation
  • Display automatic switch off if current gamma background is lower than the preset threshold level with instant switching on at:
    • pressing any control key
    • gamma background increase above the preset threshold level
    • alarm clock ringing
  • Periodic self-testing of batteries and detector
  • Energy-compensated Geiger-Muller counter
  • Ingress protection rating IP31
  • Clock, alarm clock
  • Software allows to:
    • program parameters and operating modes
    • read dosimetric measurement results
    • review and print dosimetric information as reports
    • save and export read information as a report or text file for further processing by other text editors
    • import previously stored dosimetric information for processing and analysis

Purpose of Use

  • Measurement of individual dose equivalent (DE) of gamma and X-ray radiation
  • Measurement of individual dose equivalent rate (DER) of gamma and X-ray radiation

Description

  • This dosimeter badge can be used either independently or within the automated system of personal dosimetry control.
  • In 2011, the Ministry of Emergency Situations of Ukraine sent EcotestCARD dosimeters to Japan as humanitarian aid for recovery from the accident at the Fukushima NPP, where they gained a reputation of a reliable and precise product.

Delivery Kit

  • personal gamma radiation dosimeter
  • charger
  • operating manual
  • case with a clip
  • package

Specifications

Measurement range of gamma radiation individual dose equivalent rate (DER)
1∙10-7 … 1 Sv/h
Main relative permissible error limit when measuring gamma radiation DER at 137Cs calibration with a confidence probability of 0.95:
– in the range from 1∙10–6 Sv/h to 1∙10–5 Sv/h (inclusive)
20 %
– in the range from 1∙10–5 Sv/h to 1 Sv/h
15 %
Measurement range of gamma radiation individual dose equivalent (DE)
1∙10–6 … 9.999 Sv
Main relative permissible error limit of gamma radiation DE measurement with confidence probability of 0.95
15 %
Energy range of detected gamma radiation
0.05 … 6 MeV
Energy dependence when measuring gamma radiation DER and DE relative to 0.662 MeV energy (137Cs) in the energy range from 0.05 to 1.25 MeV, not more
±25 %
Complementary relative permissible error limit of photon-ionizing radiation DER and DE measurement result caused by ambient temperature deviation from 20 oС, in the temperature range from -20 to +50 oС
5 % per each 10 оС of deviation from 20 оС
Battery life (under gamma background not more than 0.5 µSv/h, switched off alarm system and display)
800 hours
Operating supply voltage of the dosimeter from EEMB battery (LIR2450)
3.7 V
Operating temperature range
-20 … +50 °C
Dimensions
90 × 55 × 10 mm
Weight
0.08 kg

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DKG-21 EcotestCARD Personal Gamma Radiation Dosimeter