Purpose of Use

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

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

• Measurement of surface beta-particles flux density

• Measurement of ambient dose equivalent accumulation time
   

  Features

  • Big display with luminescent backlight

  • Simultaneous indication of units of measurement, measurement errors, threshold level and real time on the display

  • Analog ten-segment indicator of registered radiation intensity

  • Ability to perform measurements with a preset error

  • Four-level indication of battery discharge

  • Built-in memory which allows storing up to 1 200 measurements

  • Mode of PC connection via Bluetooth

  • Five independent measuring channels with alternate indication of data on the single liquid crystal display

  • Built-in gamma-beta-sensitive Geiger-Muller counter

  • Prompt evaluation of gamma background within 10 seconds

  • Automatic subtraction of gamma background at measurement of beta contamination

  • Measurement results averaging, manually and automatically interrupted

  • Automatic setting of measurement intervals and ranges

  • Audio, vibration and vibration-audio alarm of each detected gamma-quantum or beta-particle that can be switched off

  • Two-tone audio, vibration and vibration-audio alarm of exceeded programmed threshold levels

  • Clock and alarm clock

  • Software is used for:

    – readout of measurement results from the dosimeter memory into the PC as a dosimeter measurement protocol,

    – viewing measurement results on the PC monitor, preparation and printout of the report, saving measurement results to a file without changes or as a report for further use.

     

  Specifications

  Measurement range of photon-ionizing radiation DER	0.1 … 9 999 µSv/h
  Main relative permissible error limit of photon-ionizing radiation DER measurement with confidence probability of 0.95	(15+2/H*(10)) %,where H*(10) is a numeric value of the measured DER in μSv/h
  Measurement range of photon-ionizing radiation DE	0.001 … 9 999 mSv
  Main relative permissible error limit of photon-ionizing radiation DE measurement with confidence probability of 0.95	± 15 %
  Energy range of registered photon-ionizing radiation	0.05 … 3 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 %
  Measurement range of surface beta-particles flux density	10 … 100 000 part./(cm²·min)
  Main relative permissible error limit of beta-particles flux density measurement with confidence probability of 0.95	(20+200/φβ) %, where φβ is a numeric value of the measured surface flux density in part./(cm²·min)
  Energy range of registered beta-particles	0.5 … 3 MeV
  Measurement range of DE accumulation time	9 999 h
  Resolution of DE accumulation time display in the range- of 0 h to 100 h   – of 100 h to 9 999 h	1 min   1 h
  Absolute permissible error limit at DE accumulation time measurement during 24 h	± 1 min
  Time of the dosimeter operating mode setting, not more	1 min
  Battery life (AAAx2 of 1 280 mAh capacity) under + 20 °С temperature, natural background radiation and switched off display backlight, not more	2 000 h
  Operating supply voltage	3 V
  Operating temperature range	– 20 … + 50 °С
  Dimensions, not more	55 × 26 × 120 mm
  Weight, not more	0.2 kg