High Range Noble Gas Monitor UDGB-203

For supplies to the Russian Federation

Certificates:

Purpose:
measurement of noble gas volumetric activity in air at NPPs and other radiation hazardous sites, where ionizing radiation sources are used.

High Range Noble Gas Monitor UDGB-203 (.pdf)

Main features and functions:

  • measurement of radioactive noble gas volumetric activity in air, and data display (depending on version) or data output via RS485
  • automatic self-testing, alarm signal generation, alarm signal display and alarm output via RS485, built-in workability control source
  • 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
  • unified and replaceable components for all "RADSYS" system devices

Performance specification

Measurement range

3,7×106 ÷ 3,7×1016 Bq/m3 (85Kr)
3,7×105 ÷ 3,7×1015 Bq/m3 (133Xe)

Energy window

0,08 ÷ 2,00 MeV

Operating temperature range

0 to +55 °С

Operating pressure range

84,0 to 106,7 kPa 

Operating humidity range

up to 98 % at +35 °С

Relative error

20 %

Seismic stability

up to 8 points

Protection index

IP65

Dimensions and weight

DU: 372x390x390 mm; not more than 150 kg
LPU: 326х196х106 mm; not more than 4,5 kg
with frame: 924x632x483 mm; not more than 180 kg

Corresponds to 3N class requirements according to NP-001-97 (OPB-88/97)

Power supply

220 V

Power output

35 VA

Options

Power supply 24 V
Display and buzzer
Two two-step or one-step relays
Mounted at a frame with terminal block
Aerosol filter