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방사선측정장비

Gamma Beta Radiation Spectrometer AT1315
2채널 scintillation 감마, 베타 핵종 분석기
제조사 / 국 : Atomtex / 벨라루스
검출기 종류 : Scintillator, NaI(Tl) Ø63x63 mm for gamma
  plastic scintilltor, Ø128x9mm for beta
에너지 범위 : 50keV...3MeV for gamma
  150keV...3.5MeV for beta
ADC 채널수 : 1024
SPECIFICATIONS

- 1024-channel analogue-to-digital converter 하는데 최적화된 smart probes
- 측정모드에서 선명한 스펙트럼을 위한 지속적인 자동 LED 안정화를 수행
- Calibration integrity monitoring by means of integrated radioisotope check sample with less than the minimum significant activity
- Computer spectra processing with maximum likelihood method
- 샘플 밀도의 자동 기록
- Spectra metering with on-line visualization
- Simultaneous spectra metering and processing
- Methodological support of measurements


Detectors

 
            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 2...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) 20...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 0.2 Bq/l
            For milk, baby food 1.5 Bq/l
            For potatoes, corn, grain, agricultural raw materials 2.0 Bq/kg
Integral nonlinearity <1%
Relative energy resolution for 662 keV gamma-ray line ≤7.5%
Maximum input statistical load 1·104 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 230 VAC (±23 V), 50±0.4 Hz
Power consumption without printer 300 VA max.
Overall dimensions, weight  
            Gamma detection unit ø98x371 mm, 3 kg
            Beta detection unit ø138x340 mm, 3 kg
            Protection unit ø600x950 mm, 120 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