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PURPOSE
Measurement of specific activity of beta-emitting radionuclides in the environmental
and foodstuff samples of mass 5 to 30g (Beta-1S) and 15 to 40g (Beta-1S-150)
placed in a standard dish of the spectrometers
Beta-1S |
Beta-1S-150 |
APPLICATION
- Radiological laboratories of the State Sanitary and Epidemiological Inspection
for forest industry, veterinary and agricultural services for controlling
the quality of edible raw materials, foodstuffs, forest industry products,
livestock farming products, and soils
- Nuclear physics centers for research in various fields of fundamental and
applied physics
- Radiochemical laboratories of factories (control of production processes)
- Laboratories of external radiation control departments of factories (control
of environmental objects)
COMPONENTS
- Plastic-scintillator detecting units BDS-B
or BDS-B-150 with a built-in amplifier, high
voltage power supply, and an independent system of stabilization by the LED
reference peak ( plastic scintillator with diameter 70 mm and height 20 mm
for Beta-1S, and with diameter 150 mm and height 5 mm for Beta-1S-150)
- Spectrometric amplitude-to-digital converter ADC-1К-W1
IBM PC standard, with a buffer memory, live/real timers, and a PCI interface
bus
- IBM PC with a printer
- Applied software LSRM for Windows
- Two reference Sr-90+Y-90 mix sources for spectrometer calibration and operation
test
- Lead protection screen Ekran -1SB or Ekran-1SB - 150
- Sample compactor
- Dishes for samples: 70x8 mm (30 ml) for Beta-1S, and 150x8 mm (140 ml) for
Beta-1S-150
FEATURES
- Measurement of spectra with live-time and real-time exposures
- Energy and sensitivity calibration in energy windows *
- Automatic collection and processing of spectra, including identification
of radionuclides, and saving of spectra and results of their processing on
any information carriers
- Visualization of spectra and results of their processing on the display
- Report on the processing results
NOTES
* During the manufacture, the devices are calibrated to detect the Sr-90 radionuclide against the background of Cs-137 and K-40. The
spectrometers have hardware and software necessary to detect other beta-emitting radionuclides and to calculate their activity.
TECHNICAL DATA
| Detectable energies, MeV |
0,1 – 3 |
| Number of channels |
1024 |
| Relative energy resolution with respect to the peak of Cs-137 624 keV
conversion electrons, % |
15 |
| Time instability, % |
1 |
| Operating temperatures, °С |
10 … 35 |
| Power consumption, 220 V, 50 Hz, VA |
250 |
OVERALL DIMENSIONS AND WEIGHT
| |
Lead protection screen
(lead thickness - 50mm) |
Detection unit |
PC with ADC, printer |
Ekran-1SB |
Ekran-1SB-150 |
BDS-B |
BDS-B-150 |
Depending on the model |
| Overall dimensions, mm |
300х300х440 |
364х300х271 |
90х250 |
185х281 |
Weight, kg |
92 |
132 |
1,3 |
4,8 |
CERTIFICATES
The Beta-1S is enrolled in the State Register of Measuring Devices under № 15292-96.
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