AT6130 Radiation Monitor

Compact device intended for gamma and X-radiation ambient dose equivalent and ambient dose equivalent rate measurement, as well as for measurement of beta particle flux density on contaminated surfaces.
In search mode it measures count rate in counts per second.
  • w/o PC communication interface
  • with Bluetooth interface
  • Low weight and small size
  • Automatic compensation of intrinsic detector background
  • Sound and visual alarm in case threshold level is exceeded for dose, dose rate and flux density
  • Rapid reaction to statistically significant change of dose rate (measurement process restart)
  • Selective measurement of beta and gamma radiation in mixed fields
  • Field operation capability over a wide temperature range
  • In search mode each registered gamma quantum (beta particle) is indicated by a sound signal
  • Up to 2000 measurement results can be stored in non-volatile memory with information about measurement date and time
  • Measurement results, current time, date and battery life indicator is displayed on matrix LCD screen
  • Measurement results can be transmitted to a PC via Bluetooth interface (If available)
  • Headphones can be attached when working in noisy environment
  • Radiation protective measures in case of nuclear disasters
  • Civil protection
  • Radioecology
  • Fire-fighting service
  • Customs service
  • Dosimetric monitoring in manufacturing facilities, health care and other institutions
  • Identification of banknote, identity document, personal belongings, clothing, etc. contamination with radioactive substances
Device operating principle is based on the process of count rate measurement of impulses, generated in Geiger-Muller counter tube under the influence of X, gamma and beta radiation.
Count rate is converted automatically into measurable physical values throughout the range. Energy compensating filter allows correcting energy dependence of sensitivity efficiently in entire energy range of photon radiation.
Microprocessor-based unit is responsible for controlling the radiation monitor operating modes, calculations, storing and displaying measurement results and for self-checking function.
To facilitate the process of surface contamination evaluation the radiation monitor can be secured in a holder.
The radiation monitor AT6130 has the pattern approval certificates of Republic of Belarus, Russian Federation, Ukraine, Kazakhstan and Lithuania.


Standard monitor sensitivity response
upon maximum beta spectrum energy
at measuring beta radiation flux density
Standard energy response of monitor
sensitivity respect to 137Cs
gamma radiation of 662 keV
Standard sensitivity response upon
gamma radiation incidence angle
respect to the calibration direction

Ambient gamma and X radiation dose rate equivalent  indication range *

0.01 µSv/h...10 mSv/h
or  1 µrem/h...1 rem/h *

Ambient gamma and X radiation dose rate equivalent measurement range *

0.1 µSv/h...10 mSv/h
or10 µrem/h...1 rem/h *

Ambient gamma and X radiation dose equivalent  indication range * 1 nSv...100 mSv  
or  0.1 µrem...10 rem *

Ambient gamma and X radiation dose equivalent measurement range *

0.1 µSv...100 mSv
or 10 µrem...10 rem *

Beta particles measurement range: *  
     - flux density 10...1·104 particle/min·cm2
     - surface activity 0.5...500 Bq/cm2
     - count rate 0.1...1·104 cps

Intrinsic relative error of dose rate measurement in the range from 
0.1 µSv/h to 10 mSv/h (10 µrem/h...1 rem/h)

±20% max.

X and gamma radiation energy range

20 keV...3 MeV

Spectrum maximum energy range of registered beta particles

155 keV...3.5 MeV

Energy dependence


     - when gamma radiation dose rate is measured for 137Cs


     - when beta particles flux density is measured for 90Sr+90Y




     - to 137Cs gamma radiation

2.8 cps/µSv·h-1

     - to 90Sr+90Y beta radiation

0.36 cps/particles·min-1·cm-2

Response time for dose rate measurement
(for dose rate ≥1 µSv/h)

(accuracy error ≤±10%)

Radiation overloading

Radiation monitor can withstand 100-fold rise of dose rate measurement and beta particles flux density upper range limit for 5 minutes with readings not lower than maximum

Continuous run time

≥500 h

Working temperature range


Relative humidity with air temperature ≤35°C without condensation


Drop protection

From ≤1.5 m to hard surface

Protection class


Power supply

2 x AAA-size batteries (LR 03) or 2 x AAA-seize rechargeable cells with nominal voltage 1.2 V

Overall dimensions

110x60x38 mm


0.25 kg


* Units of measure are chosen during ordering procedure and cannot be altered later.


The radiation monitor AT6130 meets International standard requirements:IEC 60846-1:2009, IEC 60325:2002; Safety standard requirements: IEC 61010-1:1990; EMC requirements: EN 55022:1998+А1:2000+А2:2003, EN 55024:1998+A1:2001+A2:2003, IEC 61000-4-2:2001, IEC 61000-4-3:2008.

Design and specifications are subject to change without notice

Download brochure618.03 KB