Espectrómetro AT6101 y AT6101B

AT6101AТ6101 and AT6101B Portable multifunction scintillation gamma spectrometers can be used in laboratories as well as for working in field conditions. Main spectrometer function is radionuclide identification (natural, medical, industrial) without connection to a PC.
Additional functionality: search and detection of radioactivity sources and dose rate measurement.







  • Smart probes
  • Spectrometric dose rate measurement method with "Spectrum-Dose" transformation operator
  • Gamma radiation dose rate measurement and alpha and beta radiation flux density measurement with automatic background subtraction
  • Automatic continuous LED stabilization of the spectrometer energy scale
  • Spectrometric path temperature compensation by integrated temperature probe
  • Sound and LED alarm
  • Recording and storing in memory up to 300 spectra
  • Submersible design in sealed cover


  • Monitoring of environment
  • Radioactive waste control
  • Radioactive sources and materials traffic control
  • Scrap metal radiation monitoring on factories
  • Nuclear industry
  • Geological survey
  • Nuclear medicine
  • Research activities
  • Emergency situations

Spectrometers are composed of an external spectrometric gamma radiation detection unit and a processing unit.
Highly-sensible scintillation NaI(Tl) detectors are used for measurement of gamma radiation energy distribution, ambient gamma radiation dose rate equivalent, search and identification of radionuclides.
Geiger-Muller counter tube, integrated into the processing unit, is used to extend the range of ambient gamma radiation dose rate measurement as well as to monitor radiation level around the operator.
External detection units can be connected to the spectrometer to measure alpha and beta particles flux density of contaminated surfaces.
AТ6101, AT6101B Spectrometers meet International standard requirements: IEC 62327:2006;
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.
AТ6101, AT6101B Spectrometers have the pattern approval certificates of Republic of Belarus, Russian Federation, Ukraine and Kazakhstan.


            AT6101 (BDKG-05) NaI(Tl), Ø40x40 mm
            AT6101B (BDKG-11) NaI(Tl), Ø63x63 mm
            Processing unit Geiger-Muller counter tube
Energy range  
            Gamma radiation 20 keV...3 MeV
            Alpha radiation(BDPA-01) 4...7 MeV
            Beta radiation (BDPB-01) 155 keV (14C)...3.5 MeV (106Ru +106Rh)
Radionuclide identification Industrial, Natural, Medical
Individual order: Library of identified radionuclides can be corrected
Relative energy resolution for 137Cs ≤7.5% (BDKG-05)
  ≤8% (BDKG-11)
Maximum input statistical load ≥5·104 s-1
Integral nonlinearity ±1% max.
Detection time of 137Cs source with 50 Bq activity at a distance of 20 cm ≤2 s
Sensitivity to gamma radiation  
                        241Am 6000 cps/µSv/h (BDKG-05)
  13500 cps/µSv/h BDKG-11
                        137Cs 760 cps/µSv/h (BDKG-05)
  2200 cps/µSv/h (BDKG-11)
                        60Co 400 cps/µSv/h (BDKG-05)
  1200 cps/µSv/h (BDKG-11)
Measurement range of ambient radiation dose rate equivalent 0.01...300 µSv/h (BDKG-05)
  0.01...100 µSv/h (BDKG-11)
  1 µSv/h...10 mSv/h (Processing unit)
Energy dependence of sensitivity:  
            BDKG-05, BDKG-11 ±20% (in 50 keV...3 MeV energy range)
            Processing unit -25%...+35% (in 60 keV...3 MeV energy range)
Flux density measurement range  
            Alpha particles from the surface (BDPA-01) 0.5...1·105 particle/(min·cm2)
            Beta particles from the surface (BDPB-01) 3...5·105 particle/(min·cm2)
Intrinsic relative error of gamma radiation dose rate and flux density measurement ±20% max.
Number of ADC channels 512
Continuous run time ≥12 h
Measurement instability during continuous service ±5% max.
Operation mode setup time ≤1 min
Protection class           IP54
Power supply Internal battery
Working temperature range -20°C...+50°C
Relative humidity with air temperature ≤35°C without condensation ≤95%
Overall dimensions, weight  
            BDKG-05 Ø62x320 mm, 1.2 kg
            BDKG-11 Ø80x345 mm, 1.9 kg
            BDPA-01 Ø87x205 mm, 0.55 kg
            BDPB-01 Ø87x205 mm, 0.65 kg
            Processing unit 110x230x38 mm, 0.8 kg


Servicios a la Industria Nuclear y Convencional, S. A. de C. V.
Cumbres de Acultzingo #26 Int. 104
Col. Narvarte Oriente, Del. Benito Juárez, C. P. 03020, Ciudad de México
Teléfono: (55) 5523 5400     E-mail: