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S-03S - a professional small personal dosimeter-radiometer with a little time measurements at the level of natural background radiation and the speech measuring results, intended for:
  • measurement of the ambient dose equivalent of gamma - (x-ray) radiation;
  • measurement of ambient equivalent dose rate of gamma - (x-rays) radiation;
  • measurement of beta - particles flux density from contaminated surfaces;
  • measurement of specific activity of radio nuclides in samples of food products and other objects of environment;
  • evaluation of alpha- particles flux density;
  • evaluation of ionizing particles flux in the mode "SEARCH";
  • on-site search for sources of ionizing radiation, control of radioactive contamination of banknotes and their packages and operational assessment of the radiation situation

Distinctive features:
  • fast change of readings in case of statistically significant change of the intensity of the radiation;
  • built-in gas-discharge counter of gamma-, beta- and alpha- radiation;
  • voice assessment of the results of measurements of dose rate of gamma- radiation ("OK", "WARNING", "DANGEROUS") in Russian or English;
  • sound (clicks) and visual signals of radiation intensity;
  • large graphic LCD with backlight;
  • simultaneous display of the results of measurements in digital and analog form, units of measurement, current statistical error of measurement, a set threshold alarm measured value (which determines the maximum value of the analog scale), the sequence number of the current record in the journal of measurements, time, date and day of the week;
  • tone sound alarm when exceeding a user-defined threshold dose, flux density of beta - and alpha - particles and the flow of ionizing particles;
  • Automatic or manual entry in the journal of measurements with non-volatile memory of up to 2000 results of measurements of the dose, the dose or flux density of ionizing particles with their current statistical error, the date and the time of their conducting;
  • Possibility of data exchange with a PC (via USB port).
Dose measuring range, mSv
Dose rate measuring range, mcSv/h
0,1-1 103
Photons energy range, MeV
0,05 - 3,0
Measuring range of beta-particles flux density( by90 Sr+90Y), /(min-1x sm-2)
10 - 3 104
The lower limit of the beta-radiation energy being registered (by average energy of beta-spectrum 14), not more than, MeV
The limit of permissible basic relative error in the confidence 0,95, % 25
Indication range of alpha-particles flux density (by 239Pu), (min-1 x sm-2) 3 ~ 3x104
Indication range of ionization particles flux (for 90Sr + 90Y), min-1 10 ~ 3x104
The range of the measurements of specific activity of samples with the density of 0.5 to 1.5 g/cm3 :
-for 90Sr + 90Y, Bq / kg;
-for 137Cs

100 ~2x105
50 ~ 2x105
Natural background level:
- in "GAMMA" mode, mcSv/h, not more than
- in "BETA" mode, min-1 x sm-2, not more than

Operating mode setting time, min, not more than 1
Continuous operation time period (when measuring at the level of the natural radioactive background), hour:
- by 2 batteries of "DURACELL" type
- by AC 220V, 50 Hz (by voltage adapter)

400, not less
Not limited
Dose rate measuring time, s, not more than:
- when the background is 0,15 (0,30) mcSv/h
- when the background is more than 1 mcSv/h

20 (10)
Time measurements of beta particles flux density (excluding the background measurement time), s, not more than
- when beta particles flux density is less than 5 min-1sm-2
- when beta particles flux density is more than 100 min-1sm-2

Dose rate thresholds setting range, mcSv/h (with 0,1 mcSv/h step) 0,1 ~ 104
Dose thresholds setting range, mSv (with 0,001 mSv step) 110-4 ~ 103
Beta-particles flux density thresholds setting range, min-1 /sm-2 (1,0 min-1 x sm-2 step) 5 ~30000
Speech output of dose rate measuring result
Automatic with intervals 30s, 60s or 120s.
Single-staged, at any time
Sound signaling activated when exceeding the preset the thresholds dose rate and alpha- or beta-particles flux density On-off signal with 1 s interval
Sound messages:
- when the instrument power supply is on;
- when the instrument power supply is off;
- when exceeding the measuring limit of the dose rate, alpha- or beta- flux density;
- when exceeding the preset dose threshold
"Instrument is ready for operation"
"Instrument is off"
"Result exceeds the measuring limit"
"Dose threshold exceeding"
Intervals of records in the log, min 1; 5; 30 or OFF
Log capacity, number of records 2000
Language Russian/English
Operation conditions:
- temperature,º
- humidity at 30 º

minus 20 ~+50 º
up to 75 %
Overall dimensions, mm 150x75x30


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