Purpose

A radiometer is a stationery laboratory device that consists of a measurement console USR-06 and detection device UDES-02. This is a counter of alpha- and beta-particles that fall on the detector from the sample located in the measuring cuvette.

A radiometer is aimed to measure:

• a total quantity of pulses from alpha-emitting radionuclides in the count samples;
• a total quantity of pulses from beta-emitting radionuclides in the count samples;
• a total quantity of pulses from external alpha- and beta-emitting of sources type 1C0, 1П9.

The radiometers also can use for measurements which make according to appropriate methods to determine:

• a total activity of beta-emitting nuclides in the count samples which obtained from the samples of food, soil, water, air filters and sorbents;
• an activity of radionuclides in the samples which obtained after selective radiochemical extraction;
• a total activity of alpha-emitting nuclides in «fat» and «thin» of the count samples of environment objects.

The radiometers apply as a a stationery laboratory measurement device in radiological control laboratories to measure of radionuclide activity in the studied samples if there are the appropriate measurement methods, certified under the established procedure.

Features

• two independent channels that provide simultaneous measurement of alpha and beta radiation of the sample;
• a 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;
• an access to the measurement data via a display and communication lines by interface RS-485.

Downloads

	Radiometer of gross alpha and beta activity UMF-2020 (295 Кб)
	The type-examination certificate №UA.TR.113-0112-17 for UMF-2020 (1.77 Мб)

Specifications

• Type of detector:
  

  beta channel for beta-sources with radionuclides 90Sr+90Y and alpha channel for alpha-sources with radionuclides 239Рu	semiconductor detector
  compensation gamma-background	Geiger-Muller counter

• Measurement range:
  

  alpha-emitting radionuclides	from 0,01 to 10 000 Bq
  beta-emitting radionuclides	from 0,1 to 10 000 Bq

• Energy range:
  

  alpha-radiation	3500 ÷ 8000 kеV
  beta-radiation	50 ÷ 3500 kеV

• Limits of the main relative error 15 %


• Sensitivity (semiconductor detector), no less:
  

  alpha-channel(239Pu)	0,3 s-1·Bq-1
  beta-channel(90Sr ÷ 90Y)	0,2 s-1·Bq-1

• Background pulse count rate in the registration channel:
  

  alpha-radiation, no more	0,001 s-1
  beta-radiation, no more	0,03 s-1

• Range of set time intervals of measurements from 1 to 99999 s


• Minimum measured activity in the alpha channel (radionuclide ²³⁹Pu): no more 0,02 Bq


• Start time of radiometer, no more 30 minutes


• A contribution to the beta channel account from the alpha channel for a thin alpha source does not exceed 1%


• Run time of radiometers is not less 24 h


• Power supply of radiometers is made from a direct current power supply with voltage from 9 to 36 V


• The power consumed by radiometers at natural radiation background and nominal supply voltage consists of the power consumption of the console and the detection device and does not exceed:
  

  a console USR-06	1,2 VА
  a detection device UDES-02	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	295x185x80 mm
  a detection device UDES-02	244x240x175 mm

• Weight:
  

  a console USR-06	1,3 kg
  a detection device UDES-02	34 kg