AT1315 Gamma Beta Spectrometer

Two channel scintillation gamma and beta spectrometer is designed for simultaneous and selective detection of the following:

  • Specific activity of gamma-emitting radionuclides and 90Sr in different samples
  • Specific effective activity of 40К, 226Ra, 232Th in construction materials

 Can be used for rapid radioactive purity determination of standardized sample heat of metal.

  • Spectrometric and radiometric monitoring of radionuclide content in water, foods, agricultural raw materials, industrial, construction and forestry materials, environmental objects (soil, vegetation, etc.), metallurgical industry produce and products of other industries


  • Highly sensitive efficient radiometric method for determination of activity of  137Cs, 90Sr, 40K, 226Ra and 232Th
  • 1024-channel analogue-to-digital converter is integrated into smart probes
  • Continuous automatic LED stabilisation of spectrometric path in measurement mode
  • Calibration integrity monitoring by means of integrated radioisotope check sample with less than the minimum significant activity
  • Computer spectra processing with maximum likelihood method
  • Automatic recording of sample density
  • Spectra metering with on-line visualization
  • Simultaneous spectra metering and processing
  • Methodological support of measurements


Gamma and beta spectrometer operation principle is based on measurement and transformation of gamma and beta radiation, detected by standalone detection units, into amplitude distributions, which are further transformed into digital code and saved in the detection unit memory.

AT1315 Gamma beta spectrometer meets Safety standard requirements: IEC 61010-1:2001
EMC requirements: EN 55011:2009, IEC 61000-4-2:2008,IEC 61000-4-3:2008
Gamma beta spectrometer has the pattern approval certificates of Republic of Belarus, Russian Federation and Kazakhstan.

* The Customer shall purchase a PC and a printer individually or use already available equipment (Minimum technical requirements to PC shall be agreed with the Manufacturer).
            Gamma channel NaI(Tl) ø63х63 mm
            Beta channel Plastic scintillator, ø128x9 mm
Energy range  
            Gamma radiation 50 keV...3 MeV
            Beta radiation 150 keV...3.5 MeV
Volumetric (specific) activity measuring range without sample concentration (in Spectrometric and Radiometric modes)  
            137Cs 1...106 Bq/l (Bq/kg)
            40K 20...2·104 Bq/l (Bq/kg)
            226Ra 3...104 Bq/l (Bq/kg)
            232Th 3...104 Bq/l (Bq/kg)
            90Sr (In Radiometric mode only) 10...106 Bq/l (Bq/kg)
            131I (In Spectrometric mode only) 10...105 Bq/l (Bq/kg)
            134Cs (In Spectrometric mode only) 6...105 Bq/l (Bq/kg)
Intrinsic relative error of activity measurement with Р = 0.95 ±20% max.
Measured sample density range 0.2...1.6 g/cm3
Lower limit of 90Sr measurement range with sample concentration in conversion to "wet" sample  
            For potable water 0.1 Bq/l
            For milk, baby food 0.8 Bq/l
            For potatoes, corn, grain, agricultural raw materials 1.0 Bq/kg
Integral nonlinearity <1%
Typical resolution at 662 keV (137Cs) 7.5%
Maximum input statistical load 5·104 s-1
Calibration scale instability during continuous service <2%
Measurement instability during continuous service <5%
Number of ADC channels 1024
Continuous run time ≥24 h
Operation mode setup time <15 min
Working temperature range +10°С...+35°С
Relative humidity with air temperature ≤30°C without condensation ≤75%
Power supply PC USB port
Overall dimensions, weight  
            Gamma detection unit ø98x330 mm, 2 kg
            Beta detection unit ø138x323 mm, 2.5 kg
            Protection unit ø474x910 mm, 194 kg
Measurement vessels volume  
            For "wet" samples Marinelli beaker, 1 l; Flat vessel, 0.5 and 0.1 l
            For concentrated samples Flat vessel, 0.2 l and 0.03 l

Design and specifications are subject to change without notice

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