Mobile Low Range Noble Gas Monitor UDGB-209M

For supplies to the Russian Federation

Certificate of measuring tool type approval №32177, valid till 16.08.2018

measurement of noble gas volumetric activity at NPPs, radiochemical plants and other radiation-dangerous objects.

Main features and functions:

  • measurement of noble gas volumetric activity, and data display or data output via RS485
  • automatic gamma-background compensation
  • automatic self-testing, alarm signal generation, alarm signal display and alarm output via RS485
  • three alarm threshold levels (warning level and two emergency levels)
  • alarm of measured value "minor change"
  • "dry-contact" signal of threshold value is exceeded
  • standard (0...20mA / 4...20mA) analog output for measured data transfer to external systems
  • standard (0...20mA / 4...20mA) analog input for external device connection and its measured data consideration in algorithms
  • pumped air monitoring and consumption measurement
  • built-in air consumption activator and aerosol filter
  • sampling at site or by means of sampling lines (option)
  • data transfer via radio channel (option)
  • unified and replaceable components for all "RADSYS" system devices

Performance specification

Measurement range

3,7 ÷ 3,7×106 Bq/m3

Energy window

0,10 ÷ 3,00 MeV

Operating temperature range

0 to +55 °С

Operating pressure range

84,0 to 106,7 kPa

Operating humidity range

up to 80 % at +35 °С

Relative error

not more than 50 %

Protection index


Dimensions and weight

1406х560х710 mm; not more than 200 kg

Corresponds to 4 class requirements according to NP-001-97 (OPB-88/97)

Power supply

220 V

Power output

406 VA


Aerosol filter