A new version of the world-known household dosimeter TERRA-P, designed on the basis of professional device MKS-05 TERRA.

TERRA-P+ dosimeter has the following new features:

wider measurement range of gamma background;
measurement of beta-contamination;
measurement of dose accumulation time;
automatic subtraction of gamma background at measurement of beta contamination;

signaling when accumulated dose and beta-contamination thresholds are exceeded;
digital display backlight;
wider temperature range.

TERRA-P+ will help you to check the radiation safety of your home, place of work and leisure, car, household items, clothing, construction materials, wild berries and mushrooms.

Purpose of use
Measurement of gamma radiation ambient dose equivalent rate;
Measurement of gamma radiation ambient dose equivalent;
Measurement of surface beta-particles flux density;
Measurement of ambient dose equivalent accumulation time;
Real time measurement (clock).


  • Five independent measuring channels with alternate indication of data on the single liquid crystal display;
  • Built-in gamma, beta sensitive Geiger-Muller counter;
  • Automatic setting of measurement intervals and ranges;
  • Audio signaling of each detected gamma-quantum and beta-particle;
  • Two-tone audio alarm of exceeded programmed threshold levels;
  • Digital display backlight;
  • Two AAA size batteries;
  • Low battery indication;
  • Shock resistant body;
  • Small weight and dimension parameters.

Measurement ranges and main relative errors:

  • Gamma and X-ray radiation ambient dose equivalent rate

0,1…5 000 µSv/h

±(25+2/H*(10))% , where H*(10) is a numeric value of measured DER equivalent to µSv/h

  • Gamma and X-ray radiation ambient dose equivalent

0.001…9 999 mSv ±25%

  • Beta-particles flux density with possible evaluation of surface contamination by beta radionuclides (90Sr+90Y)

10…100 000 1/(cm²×min)

  • Dose equivalent accumulation time and accuracy of measurement 1min…100h;
    ±0,1s per 24h

Energy ranges of measurement and energy dependence:

  • Gamma and X-ray radiation 0.05…3.0; ±25% MeV
  • Beta radiation 0.5…3.0 MeV
  • Measurement time intervals 5…70 seconds
  • Battery life 6 000 hours
  • Operating temperature range -10…+50 °С
  • Weight 0.15 kg
  • Dimensions 120×52×26 mm
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