AT6101D Spectrometer

AT6101D Portable multifunction scintillation gamma spectrometer is designed to measure specific effective activity value for 40K, 226Ra, 232Th natural radionuclides in construction materials, raw and manufactured products, manufacturing waste and other objects of environment, as well as measurement of 137Cs surface activity in soils and subsoils, and 137Cs specific activity in agricultural raw materials, forestry products and construction materials.
In situ measurement are made for 2π and 4π geometries without preliminary sampling.

  • Smart spectrometric probes
  • Measurement in 2π and 4π geometries (on a surface and inside a well)
  • Continuous automatic LED stabilization of identification device energy scale, periodic readjustment of identification device energy scale with integrated reference KCl sample
  • Digital measurement path temperature compensation
  • Recording and storing in memory up to 300 spectra
  • Ready for field operation
  • Shock-resistant, dust-and-moisture-proof construction

  • 137Cs content control in various plant raw materials
  • Radioactive waste control
  • Construction material and products radiation monitoring
  • Nuclear industry
  • Geological survey
  • Research activities
  • Emergency situations
  • Monitoring of soils and subsoils contamination by 137Cs radionuclide in naturally-occurring conditions 
Detecting unit in a shock-resistant, dust-and-moisture-proof container registers gamma radiation of controlled radionuclides.
Spectrometric information from the detection unit is transferred into processing unit (PU) and is displayed on LCD screen.
Instrumental spectra processing algorithm allows data display in the form of specific effective activity of natural radionuclides, their concentration, specific effective activity of 137Cs natural radionuclide and its concentration.
Ambient gamma radiation dose equivalent rate value in inspection point is determined by instrument spectrum analysis with “spectrum-dose” operational function.
Radioactive anomalies are searched in integral count rate measurement mode.
AT6101D Spectrometer meets Safety standard requirements: IEC 61010-1:1990
EMC requirements: EN 55011:2009, IEC 61000-4-2:2008, IEC 61000-4-3:2008, IEC 61000-4-6:2008. 

AT6101D Spectrometer has the pattern approval certificates of Republic of Belarus, Russian Federation, Ukraine and Kazakhstan.


Natural radionuclide activity 
Dose equivalent rate
Spectrum processing
            BDKG-11 Scintillator NaI(Tl),Ø63x63 mm
Measurement range for:  
                        40K, 226Ra, 232Th effective specific activity in geometry  
                        2π 100...1·104 Bq/kg
                        4π 50...1·104 Bq/kg
                        137Cs surface activity in geometry:  
                        2π 4...3700 kBq/m2
(0.1 ...100 Ci/km2)
                        137Cs activity in geometry:  
                        4π 50...1·106 Bq/kg
Intrinsic relative error of 40K, 226Ra, 232Th and 137Cs radionuclides activity measurement ±20% max.
Measuring of gamma radiation in the following energy range 40 keV...3 MeV
Measurement range of ambient radiation dose rate equivalent 0.01...100 µSv/h
Integral nonlinearity 1% max.
Relative energy resolution for 137Cs ≤8%
Maximum input statistical load ≥5·104 s-1
Number of ADC channels 512
Internal battery run time ≥12 h
Energy scale instability during continuous service ±1.5% max.
Operation mode setup time ≤10 min
Working temperature range -20°С...+50°С
Relative humidity with air temperature ≤35°C without condensation ≤95%
Protection class           IP54
Power supply Internal battery
Overall dimensions  
            BDKG-11 in protection container Ø121x477 mm
            Processing unit 110x230x38 mm
            BDKG-11 in protection container 4.0 kg
            Processing unit 0.8 kg

Design and specifications are subject to change without notice

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