Description
Alpha-beta radiometer UMF-2020 is a stationery laboratory device that consists of a measurement console USR-06 and a detection device based on semiconductor detector and Geiger–Müller counter.
Application
Radiometer UMF-2020 is aimed to measure:
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a total quantity of pulses from alpha-emitting radionuclides in the measured samples;
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a total quantity of pulses from beta-emitting radionuclides in the measured samples;
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a total quantity of pulses from external alpha- and beta-emitting of 'thin' sources.
The radiometers also can be used in measurements which make according to appropriate methods to determine:
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a total activity of beta-emitting nuclides in the measured samples which obtained from the food, soil, water, air filters and sorbents;
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an activity of radionuclides in the samples which obtained after selective radiochemical extraction;
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a total activity of alpha-emitting radionuclides in 'fat' and 'thin' samples from environment objects.
Features
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two independent channels that provide simultaneous measurement of alpha and beta radiation of the sample;
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measurement console provides an ability of continuous control for change of registered pulses in each of the channels according to the display and the operator can set the exposure time. Also, the console provides audible alarm of the completion of the measurement process;
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an access to the measurement data via display and communication by interface RS-485.
Technical and metrological characteristics
Weight
- a console USR-06
- a detection device UDES-02
Type of detector
- beta - and alpha channel
- compensation gamma-background
- semiconductor detector
- Geiger–Müller counter
Measurement range
- alpha-emitting radionuclides
- beta-emitting radionuclides
from 0,01 to 10 000 Bq
from 0,1 to 10 000 Bq
Energy range
- alpha-radiation
- beta-radiation
3500 ÷ 8000 kеV
50 ÷ 3500 kеV
Limits of the main relative error
± 15 %
Sensitivity (semiconductor detector), no less
- alpha-channel (Рu-239)
- beta-channel (Sr-90+Y-90)
0,3 cps/Bq
0,2 cps/Bq
Background pulse count rate in the registration channel
- alpha-radiation, no more
- beta-radiation, no more
0,001 cps
0,03 cps
Range of set time intervals of measurements
from 1 to 99999 s
Minimum measured activity in the alpha channel (radionuclide Pu-239)
no more 0,02 Bq
Start time of radiometer, no more
30 min
A contribution to the beta channel account from the alpha channel for a thin alpha source does not exceed
1%
Power supply of radiometers is made from a direct power supply with voltage
from 9 to 36 V
The power consumption
- a console USR-06
- a detection device UDES-02
1,2 VА
0,8 VА
Communication interface for connecting to upper-level equipment
RS-485
Ambient temperature range
from +5 °С to +50 °С
Dimensions
- a console USR-06
- a detection device UDES-02
295 х 185 х 80 mm
244 х 240 х 175 mm
